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Car won't keep running after its started
2005 Buick LeSabre

Car won't keep running after its started

(2005 Buick LeSabre)
we have replaced maf, fuel filter, gas cap and it still won't stay running. i've ordered an iac valve. what else could it be?
What seems to make the problem better or worse? hard to start, won't keep running
How long have you had this problem? on and off the last 6 months
Tags: buick, lesabre
1 answer & 0 comments
Popular Answer
on September 10, 2019
What testing has been performed? Goodness, throwing parts at your car is the worst possible diagnostic tactic. You could actually make matters worse.

Engine function requires fuel delivery, ignition spark, engine compression, engine proper timing, and air intake in the proper amount -- as well as free flow of exhaust.

Emissions control components can also influence engine performance negatively if malfunctioning.

Test equipment, when utilized, can provide any diagnostic trouble codes that have been set which can be good troubleshooting clues. Using a fuel pressure gauge to check fuel pressure to the engine fuel rail is helpful. Checking for ignition spark at the plugs is helpful. Is there an air intake restriction? Is there an engine vacuum leak?

The possibilities are many -- you'll need some hands on diagnostic help to approach this concern properly and with success.
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General Diagnosis
$88 - $111 Learn More
on September 10, 2019
What testing has been performed? Goodness, throwing parts at your car is the worst possible diagnostic tactic. You could actually make matters worse.

Engine function requires fuel delivery, ignition spark, engine compression, engine proper timing, and air intake in the proper amount -- as well as free flow of exhaust.

Emissions control components can also influence engine performance negatively if malfunctioning.

Test equipment, when utilized, can provide any diagnostic trouble codes that have been set which can be good troubleshooting clues. Using a fuel pressure gauge to check fuel pressure to the engine fuel rail is helpful. Checking for ignition spark at the plugs is helpful. Is there an air intake restriction? Is there an engine vacuum leak?

The possibilities are many -- you'll need some hands on diagnostic help to approach this concern properly and with success.
Sign in to reply

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