2000 intrigue won't stay running
tat
09-22-2010, 11:10 PM
My intrigue takes several seconds before it will fire when starting, also once it is running but moving at a low speed it will die. Seems once I have it running and traveling at a higher rate of speed, it does okay. Seems to do this right after it's been started.
Have replaced throttle postion sensor and map sensor, didn't help.
Any suggestions? Also had the high idle problems on occassion but haven't noticed that lately.
Have replaced throttle postion sensor and map sensor, didn't help.
Any suggestions? Also had the high idle problems on occassion but haven't noticed that lately.
Smitty's Buick
09-24-2010, 06:57 AM
The stalling at low speeds/RPM's is probably your IAC - Idle Air Control Valve. It may need just a cleaning (carbon removal) or replacement. The slow starting (long cranking?) could be many things. You'll need to check fuel pressure, spark, etc..
Smitty's Buick
Smitty's Buick
tat
09-26-2010, 12:01 AM
Fuel pressure checked out okay. Wondering if it could be crank position sensor?
krivasauto
09-26-2010, 07:38 AM
Fuel pressure checked out okay. Wondering if it could be crank position sensor?
If you don't want to throw parts at the car, you will have to get some test equipment and diagnose the problem. Autozone and most other car part stores will read engine codes for you. What codes is it throwing?
If there aren't any codes, then start with the basics - fuel, air, spark. You said the fuel pressure was ok - how do you know? Pressure is one issue, volume is another. Has the fuel filter been changed, is the sock in the tank clean, are any lines kinked? When running, are all of the injectors firing - you can use a mechanic's stethoscope to listen to them individually. Do you have an intake manifold vacuum leak that is so large it is leaning out the engine? Some carb spray might tell you.
Air is more than just the air filter. Air has to be compressed and exhausted at the right time in the right way. What does your compression test say? Are you losing any coolant that might indicate a head gasket leak? Are you losing any oil that might indicate a compression leak? A leak down test on a poor compression cylinder will help pinpoint where the leak comes from. A block test will discover if combustion gases are leaking past the head gasket into the coolant.
Good fuel and compression don't help if you don't have spark. If your car really is a 2000 than you should have the 3.5. Commonly, the spark plug wells will fill with oil because these seals go bad (the orange oval one in the center - two are missing):
http://im1.shutterfly.com/media/47a0df33b3127ccef94cf5112a6e00000030O08IZtXLZszag9 vPhI/cC/f%3D0/ps%3D50/r%3D0/rx%3D550/ry%3D400/
How old are the plugs? Brand and plug type are important. How are your coil packs - running extended periods with worn out plugs can fry a coil.
These are just some of the issues that make it tough to fix a car the way you are going about it. But I hope for the best.
If you don't want to throw parts at the car, you will have to get some test equipment and diagnose the problem. Autozone and most other car part stores will read engine codes for you. What codes is it throwing?
If there aren't any codes, then start with the basics - fuel, air, spark. You said the fuel pressure was ok - how do you know? Pressure is one issue, volume is another. Has the fuel filter been changed, is the sock in the tank clean, are any lines kinked? When running, are all of the injectors firing - you can use a mechanic's stethoscope to listen to them individually. Do you have an intake manifold vacuum leak that is so large it is leaning out the engine? Some carb spray might tell you.
Air is more than just the air filter. Air has to be compressed and exhausted at the right time in the right way. What does your compression test say? Are you losing any coolant that might indicate a head gasket leak? Are you losing any oil that might indicate a compression leak? A leak down test on a poor compression cylinder will help pinpoint where the leak comes from. A block test will discover if combustion gases are leaking past the head gasket into the coolant.
Good fuel and compression don't help if you don't have spark. If your car really is a 2000 than you should have the 3.5. Commonly, the spark plug wells will fill with oil because these seals go bad (the orange oval one in the center - two are missing):
http://im1.shutterfly.com/media/47a0df33b3127ccef94cf5112a6e00000030O08IZtXLZszag9 vPhI/cC/f%3D0/ps%3D50/r%3D0/rx%3D550/ry%3D400/
How old are the plugs? Brand and plug type are important. How are your coil packs - running extended periods with worn out plugs can fry a coil.
These are just some of the issues that make it tough to fix a car the way you are going about it. But I hope for the best.
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