I have a daewoo lanos model 2000. Every time it gets hot it runs rough and surging. I changed the fuel injector, fuel pump, spark plug, spark plug cable wire, and ignition coil but still did not solve the problem. I send it to shop to check for computer but they did not find the cause. Four mechanics have different findings. Is there anybody out there who have the same experience and how did they solve the problem. Thanks..Car surge while running every time it gets hot?
Since this seems to be a temperature related problem, changing stuff like the fuel pump etc is not going to solve it.
Try changing (or testing first) the coolant temperature sensor. This relays information to the ECU which then adjusts fuelling / ignition accordingly for the engine's temperature
Wednesday, November 24, 2010
Fuel filter and carb not always getting fuel
85 Z28 camaro with a 350 small block. Two months back after you drove the car around town shut it off come back later it would start and shut back off when you put it in gear. So we did take everyones ideas from here and found the Distributor did need changed two of the spark plug wires was lose on the cap. We changed cap rotor and coil. three week later it wouldn't even try to start so we had it towed to the shop and the Ignition Module needed changed. Yesterday my son came home handed me the keys and told me to sell it. He said it stalled at a light and wouldn't start so he pushed it off the road and walked home. I went to try it and it started great but ran for a few seconds and shut off. I checked the fuel filter it was only half full and then i checked the carb it was dry no gas at all. I came home got the starting fluid went back spayed it in the carb it ran a few second and shut off so i did it again after about 10 minutes it started and shut off. I got out checked the fuel filter again and this time it didn't have any fuel in it.My husband pulled in and he got out and checked it and found no gas in carb or filter, He wanted to try the starting fluid it did the same thing with him so he wanted to call tow truck i said no way i think this car is in love with that tow truck. I got in and pumped it and he did the starting fluid and he ran as long as I keep my foot on the gas as soon as i let go it sounded like it was going to stall and did. i turned the key it started then shut off. I told him to do the starting fluid one more time and this time i pumped it and then held the gas pedal to the floor and it started running bad but running i drove it home putting it in neutral at red lights keep it running but it still sounded like it was going to stall. We got home pulled off the fuel line turned the key and no fuel at all came out and the fuel filter had no fuel at all.Not sure how this car made it home like that. We changed the fuel filter took it for a drive it run good checked fuel filter and carb they both had gas. This morning I started it and it was running great i pulled it out of the driveway so my husband to get out and then by the time i pulled it in to the garage it didn't sound right so i checked filter and carb fuel filter was dry and carb had very little. I told my son not to go far away from home with it but he did. he drove about 20 miles to a friends house and it didn't shut off about six hours later he left there to come home and about a mile from the house it shut off seconds after he left a red light. A few hours later we went to try to start it and two turns of the key and it started and we didn't use starting fluid. We welcome any ideas we have had to tow this car six times in the year we have had it because of it stalling and not wanted to start we have had it taking to three auto repair places and no can find out why. It has a new crate motor and the fuel pump it only seven months old the carb is a brand new holly just got it in Jan of this year. new wires and plugs in Jan. Fuel filter and carb not always getting fuel
If it has a carburetor then it has a mechanical fuel pump.
Disconnect the fuel line at the carburetor and crank the engine. Does fuel spit all over the place?
YES: There is adequate fuel supply. The problem is probably in the carburetor.
NO: Consider the following:
1. Bad fuel pump
2. Supply line collapse or restriction
3. Clogged vents in gas cap
By the way, there should only be one fuel filter. It is located inside the carburetor right where the fuel line connects. There is a housing that contains (usually) a paper element.
Good luck!Fuel filter and carb not always getting fuel
tl;dr
Anyways, basic skimming points to a fuel filler cap. It might be fuel locking and starving the motor of fuel, and then when it dies it comes back a few minutes later cause the air in the line moves back.
Fuel filter and carb not always getting fuel
How are the fuel tank and pick-up? Lines from tank to filter? I would start there, based upon what I am reading. Filler cap on an 85? that far back ok, sounds good to me. If not move on. Thanks for the info.Fuel filter and carb not always getting fuel
only one possible / probable cause for not getting fuel, the filter in the tank or the pump its self, i would drop the tank drain and clean it, there are companies that do this-and have the tank coated on the inside, this really helps bigtime, it will also stop, repair and pinholes that may have been forming, the fuel pump has to be the mail problem, now, with a carb the pump is mechanically driven, it is on the passenger side of the block, since it will run with starting fluid the fuel pressure is the problem, holley makes a nice pump thats mechanical and you can adjust the position of the inlet and return /vent lines, good luckFuel filter and carb not always getting fuel
THE PROBLEM SOUNDS LIKE THE FUEL PUMP, CHECK FOE VOLTAGE AT THE FUEL PUMP WHEN THE PROBLEM OCCURS, YOU CAN DO THIS WITH A TEST LIGHT FROM KRAGEN OR SOMETHING. IF SO, THEN CHECK AND SEE IF YOU CAN HEAR IT, DO THIS BY TURNING ON THE IGNITION AND LISTEN FOR A LOW HUMMING NOISE. ALSO LOOK AND SEE IF ANY FUEL HOSE OR LINES ARE PINCHED. TELL ME IF IT HELPS.Fuel filter and carb not always getting fuel
First does it have a electric fuel pump or a mechanical fuel pump if it has a mechanical fuel pump it could be worn out and leaking gas into the motor and not pumping it into the carb or if it has a electric fuel pump u could have a ground or power issue making the pump shut off now and then due to bumps (pot holes) in the road causing the wires to move and killing the pump so once u run out of the gas thats in the carb the car stalls out Fuel filter and carb not always getting fuel
try the crankshaft position sensor,and the throttle position sensor if you have either one of those ,,,,
also it sounds like your TIMING is off ..i don't think it is the timing chain though because you didn't mention a back fire.............i think your spark is hitting after the fuel has been released ....which leads me to think it may be your fuel pump .....i understand that it is about 7 months old but autozone has been having problems with fuel pumps the last few months..also check for a fuel relay for your vehicle......autozone.com has online repair manuals and troubleshooting guides and componet locator guides for many vehicles
If it has a carburetor then it has a mechanical fuel pump.
Disconnect the fuel line at the carburetor and crank the engine. Does fuel spit all over the place?
YES: There is adequate fuel supply. The problem is probably in the carburetor.
NO: Consider the following:
1. Bad fuel pump
2. Supply line collapse or restriction
3. Clogged vents in gas cap
By the way, there should only be one fuel filter. It is located inside the carburetor right where the fuel line connects. There is a housing that contains (usually) a paper element.
Good luck!Fuel filter and carb not always getting fuel
tl;dr
Anyways, basic skimming points to a fuel filler cap. It might be fuel locking and starving the motor of fuel, and then when it dies it comes back a few minutes later cause the air in the line moves back.
Fuel filter and carb not always getting fuel
How are the fuel tank and pick-up? Lines from tank to filter? I would start there, based upon what I am reading. Filler cap on an 85? that far back ok, sounds good to me. If not move on. Thanks for the info.Fuel filter and carb not always getting fuel
only one possible / probable cause for not getting fuel, the filter in the tank or the pump its self, i would drop the tank drain and clean it, there are companies that do this-and have the tank coated on the inside, this really helps bigtime, it will also stop, repair and pinholes that may have been forming, the fuel pump has to be the mail problem, now, with a carb the pump is mechanically driven, it is on the passenger side of the block, since it will run with starting fluid the fuel pressure is the problem, holley makes a nice pump thats mechanical and you can adjust the position of the inlet and return /vent lines, good luckFuel filter and carb not always getting fuel
THE PROBLEM SOUNDS LIKE THE FUEL PUMP, CHECK FOE VOLTAGE AT THE FUEL PUMP WHEN THE PROBLEM OCCURS, YOU CAN DO THIS WITH A TEST LIGHT FROM KRAGEN OR SOMETHING. IF SO, THEN CHECK AND SEE IF YOU CAN HEAR IT, DO THIS BY TURNING ON THE IGNITION AND LISTEN FOR A LOW HUMMING NOISE. ALSO LOOK AND SEE IF ANY FUEL HOSE OR LINES ARE PINCHED. TELL ME IF IT HELPS.Fuel filter and carb not always getting fuel
First does it have a electric fuel pump or a mechanical fuel pump if it has a mechanical fuel pump it could be worn out and leaking gas into the motor and not pumping it into the carb or if it has a electric fuel pump u could have a ground or power issue making the pump shut off now and then due to bumps (pot holes) in the road causing the wires to move and killing the pump so once u run out of the gas thats in the carb the car stalls out Fuel filter and carb not always getting fuel
try the crankshaft position sensor,and the throttle position sensor if you have either one of those ,,,,
also it sounds like your TIMING is off ..i don't think it is the timing chain though because you didn't mention a back fire.............i think your spark is hitting after the fuel has been released ....which leads me to think it may be your fuel pump .....i understand that it is about 7 months old but autozone has been having problems with fuel pumps the last few months..also check for a fuel relay for your vehicle......autozone.com has online repair manuals and troubleshooting guides and componet locator guides for many vehicles
Hi,i am driving a Renault Megane Cabriolet 2001 1.6 16V.?
any idea how much would it cost to change the flywheel sensor or the ignition coils?like to get an idea of the cost first before i go down to the workshop.thanks for helping.regards!Hi,i am driving a Renault Megane Cabriolet 2001 1.6 16V.?
look the web site renault France tuning:
http://www.creative-car-gillet.com/produinstall theme into v3i relationship advice needed
look the web site renault France tuning:
http://www.creative-car-gillet.com/produ
Chrysler sebring 2000 2.5l car wont start!?
I know naturally its a pain to solve some problems on this car. But it cranks over just fine, just won't start. This is what I have tried (2.5L Sebring Conv, 2000)
I Tested 12v on the 2-way pin to the distributor, I have volts.
Tested the pulsing between both CAM/Crank Sensor's, Both are pulsing. However, When the cam pulse's it makes a big buzzing sound, and the Crank pulses are random and pulses 7-10 times when turning the crankshaft by hand. Both pulses are reading 5v. (4.97)
I tested the Ignition Coil Driver (Pin 1 or 6 depends on how you look at it) on the 6-Way Distributor Connection and I am not getting 1.5-2.5V when I try to crank over the engine. The grounds ground the way they should, and I do have good continuity for the ignition coil driver on PCM Connector Pin 4, Just no volts. (Tried testing with wires all together with a paper clip, still no volts.
I have already swapped out the computer (I was guessing the computer was not calculating the timing right) and it did not fix the prob. I check the timing belt, its timing are right.
I tested spark a few diff way, with the distributor cap/rotor on with a wire plugged in, With a plug wire directly in the Ignition Coil Tower, and a few other ways.
I have swapped the ASD Relay out with another one I in the fuse box. I can't find any shorting in any wire I try (That I know of anyway)
SO the crank/cam sensors are working and sending volts to the PCM. I am getting 12v from the ASD relay to my 2-way pin, I am getting pulsing on my fuel injectors, My Cam/crank sensors are toggling 0-5v, Getting 8.7v on the right CAM/Crank wires, The ground on both Cam/Crank are grounding. The only thing I am not getting is Volts on the Ignition Coil Driver.
I did the test with the Ignition key (done test before) And as before it shows me no codes. My code reader for the car also shows me no codes. And the buzzing that happens with the cam, the cam shows 5v for every other full rotation of the engine (I think) It does toggle back and forth 0-5v and when the buzzing happens it only happens or is only noticed when I turn the engine by hand. If you think I have over looked something or I have tested something wrong, please send any test you would like me to do. My car has been not running for a month now and could really use the help.
I am not sure if this will help but heres a link to the all the wireing in the car.
http://ww2.justanswer.com/uploads/TrevHe
Just the ignition coil driver (PCM 11 was changed in year 1999-2000 car to PCM 4) Thats the only change I know of.
Hope this helps!
Tried almost everything and I am at a lost :(, Please help!%26quot;Chrysler sebring 2000 2.5l car wont start!?
Sounds to me like YOU should be answering the questions of others. You've done a great deal to try and figure out the problem.
Try www.cartalk.com
Their forum is the best when stuff gets this complicated.Chrysler sebring 2000 2.5l car wont start!?
Hook it up and scan it. A blk/rd wire is the key. Both spark and fuel drivers are PCM located, if the valve timing and grounds and power are present there may be something wrong with the cam, crank timing. A scanner is used first and mechanical inspections next.
I Tested 12v on the 2-way pin to the distributor, I have volts.
Tested the pulsing between both CAM/Crank Sensor's, Both are pulsing. However, When the cam pulse's it makes a big buzzing sound, and the Crank pulses are random and pulses 7-10 times when turning the crankshaft by hand. Both pulses are reading 5v. (4.97)
I tested the Ignition Coil Driver (Pin 1 or 6 depends on how you look at it) on the 6-Way Distributor Connection and I am not getting 1.5-2.5V when I try to crank over the engine. The grounds ground the way they should, and I do have good continuity for the ignition coil driver on PCM Connector Pin 4, Just no volts. (Tried testing with wires all together with a paper clip, still no volts.
I have already swapped out the computer (I was guessing the computer was not calculating the timing right) and it did not fix the prob. I check the timing belt, its timing are right.
I tested spark a few diff way, with the distributor cap/rotor on with a wire plugged in, With a plug wire directly in the Ignition Coil Tower, and a few other ways.
I have swapped the ASD Relay out with another one I in the fuse box. I can't find any shorting in any wire I try (That I know of anyway)
SO the crank/cam sensors are working and sending volts to the PCM. I am getting 12v from the ASD relay to my 2-way pin, I am getting pulsing on my fuel injectors, My Cam/crank sensors are toggling 0-5v, Getting 8.7v on the right CAM/Crank wires, The ground on both Cam/Crank are grounding. The only thing I am not getting is Volts on the Ignition Coil Driver.
I did the test with the Ignition key (done test before) And as before it shows me no codes. My code reader for the car also shows me no codes. And the buzzing that happens with the cam, the cam shows 5v for every other full rotation of the engine (I think) It does toggle back and forth 0-5v and when the buzzing happens it only happens or is only noticed when I turn the engine by hand. If you think I have over looked something or I have tested something wrong, please send any test you would like me to do. My car has been not running for a month now and could really use the help.
I am not sure if this will help but heres a link to the all the wireing in the car.
http://ww2.justanswer.com/uploads/TrevHe
Just the ignition coil driver (PCM 11 was changed in year 1999-2000 car to PCM 4) Thats the only change I know of.
Hope this helps!
Tried almost everything and I am at a lost :(, Please help!%26quot;Chrysler sebring 2000 2.5l car wont start!?
Sounds to me like YOU should be answering the questions of others. You've done a great deal to try and figure out the problem.
Try www.cartalk.com
Their forum is the best when stuff gets this complicated.Chrysler sebring 2000 2.5l car wont start!?
Hook it up and scan it. A blk/rd wire is the key. Both spark and fuel drivers are PCM located, if the valve timing and grounds and power are present there may be something wrong with the cam, crank timing. A scanner is used first and mechanical inspections next.
Can a crank shaft sensor be changed by an oridnary person with ordinary tools on a 99 pontiac grand prix gt?
I have a 1999 pontiac grand prix gt which is misfiring thus vibrating and sputerring. I have changed the coils packs and spark plugs as the car uses the COP ignition system. The problem comes and goes which tells me its not the fuel pump or system. I want to change the lower crank shaft sensor which I have been told can definietly cause my issue. How easily is this to do on my specific car and how expensive is a new lower crank shaft sensor? Are any pontiac/gms specific tools needed?Can anyone provide any specific schematics which will tell me how to do this? If you do can you please provide a link rather than just putting goto autozone.com....Can a crank shaft sensor be changed by an oridnary person with ordinary tools on a 99 pontiac grand prix gt?
Crank and cam sensors don't generally give occasional problems.
They either work, or they don't.
Before you start yanking MORE parts, why not have the codes scanned?
It's free to do at a bunch of places. Mostly at auto parts stores.
The crank sensor is a pain in the *** to get to, but overall it's pretty simple.Can a crank shaft sensor be changed by an oridnary person with ordinary tools on a 99 pontiac grand prix gt?
The sensor itself is generally a cheap part but replacing it is another story. You probably don't need any specific tools for the job but you're definitely going to need a torque wrench.
But I doubt that's the actual problem. Distributor-less ignition means you may need to change the harnesses as well.Can a crank shaft sensor be changed by an oridnary person with ordinary tools on a 99 pontiac grand prix gt?
I assume you own a lift, so yes, if you have tools and knowledge you can replace it. I assume the check engine light is on with this code as well, if not, then it's something else. As far as cost, use some common sense if you own a telephone and call a parts place.
Crank and cam sensors don't generally give occasional problems.
They either work, or they don't.
Before you start yanking MORE parts, why not have the codes scanned?
It's free to do at a bunch of places. Mostly at auto parts stores.
The crank sensor is a pain in the *** to get to, but overall it's pretty simple.Can a crank shaft sensor be changed by an oridnary person with ordinary tools on a 99 pontiac grand prix gt?
The sensor itself is generally a cheap part but replacing it is another story. You probably don't need any specific tools for the job but you're definitely going to need a torque wrench.
But I doubt that's the actual problem. Distributor-less ignition means you may need to change the harnesses as well.Can a crank shaft sensor be changed by an oridnary person with ordinary tools on a 99 pontiac grand prix gt?
I assume you own a lift, so yes, if you have tools and knowledge you can replace it. I assume the check engine light is on with this code as well, if not, then it's something else. As far as cost, use some common sense if you own a telephone and call a parts place.
Ive got a sohc EFi engine with a distibutor (hall-effect) type ignition,.?
can i change it/mod it to a waste-spark type twin coil/quad coil (Distributorless Ignition system).. or individual coil system? how its done?Ive got a sohc EFi engine with a distibutor (hall-effect) type ignition,.?
Not likely unless there is a way to add a TDC sensor to it.Ive got a sohc EFi engine with a distibutor (hall-effect) type ignition,.?
as a matter of fact yes... it can be done.. with good after market ECU...
i'v seen one... the ecu just need the stock distributor (no leads) and it will figure the rest..
Not likely unless there is a way to add a TDC sensor to it.Ive got a sohc EFi engine with a distibutor (hall-effect) type ignition,.?
as a matter of fact yes... it can be done.. with good after market ECU...
i'v seen one... the ecu just need the stock distributor (no leads) and it will figure the rest..
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How much fuel presure is a 95 caprice 5.7 need to have?
right now all i got is 30 psi is that good are not good enough ,the plugs are firein but the motor will not even hit like it is going to start up , please give a list of things that could cause this. it was runing fine untill the vent hose came off of the dist cap and i got water in it then it got were it would if you kicked down on it it acted like a stopped up fuel filter and as long as i drove it easy it was fine untill the other day it quit on me and would not start up so i checked the plugs and they were not firein,so i changed the dist cap and they are firein now but it acts like it is not getting gas now . sorry for not being organized with this question but i really need some help with this. back when it was running i took it to a shop and hooked it up on a com. first they told me the knock sensor i changed that and did not work, took it back to the shop and they told me the coolent sensor was bad guess what? that didn't fix it. i have put a new fuel filter on it , changed the ignition module,new plugs, coil, so if you know anything else i need to check please tell me thanks for any helpHow much fuel presure is a 95 caprice 5.7 need to have?
1]. With engine %26quot;OFF%26quot;, ignition %26quot;ON%26quot;, and the fuel pump running pressure should 41.0 to 47.0 PSI Note: give it a blast of alternate fuel (choke cleaner in the throttle body and try it that way you will know if it is a fuel problem!!!) Then again you can just throw parts at it!!!How much fuel presure is a 95 caprice 5.7 need to have?
I think the pressure should be a little higher... like 35-40 psi or something. If your motor is TPI, you should see a steady cone-shaped pattern of fuel being sprayed from the injectors into the intake. For MPI, hook a NOID light to the connector for each injector and see if you get pulsation (indicated by the light blinking on/off while cranking). If in both cases, neither is happening, then check for the signal thats supposed to come from the ECM... if no signal, then the ECM is your problem.How much fuel presure is a 95 caprice 5.7 need to have?
Have you changed your pickup coil, it sits under your ignition module ? Might be your fuel system, but I'm not sure that you went deep enough on your ignition, since you said this all started with your distributor. I would also check all connections.How much fuel presure is a 95 caprice 5.7 need to have?
you might want to change the fuel filter and then check it again. if the filter is dirty then it won,t read right.
1]. With engine %26quot;OFF%26quot;, ignition %26quot;ON%26quot;, and the fuel pump running pressure should 41.0 to 47.0 PSI Note: give it a blast of alternate fuel (choke cleaner in the throttle body and try it that way you will know if it is a fuel problem!!!) Then again you can just throw parts at it!!!How much fuel presure is a 95 caprice 5.7 need to have?
I think the pressure should be a little higher... like 35-40 psi or something. If your motor is TPI, you should see a steady cone-shaped pattern of fuel being sprayed from the injectors into the intake. For MPI, hook a NOID light to the connector for each injector and see if you get pulsation (indicated by the light blinking on/off while cranking). If in both cases, neither is happening, then check for the signal thats supposed to come from the ECM... if no signal, then the ECM is your problem.How much fuel presure is a 95 caprice 5.7 need to have?
Have you changed your pickup coil, it sits under your ignition module ? Might be your fuel system, but I'm not sure that you went deep enough on your ignition, since you said this all started with your distributor. I would also check all connections.How much fuel presure is a 95 caprice 5.7 need to have?
you might want to change the fuel filter and then check it again. if the filter is dirty then it won,t read right.
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