Skip the auto shop - Our mechanics make house calls

Q: Car hesitates and stalls ocassionally - 1994 Cadillac Brougham

asked by on

My car ocassionally starts hesitating and stalling especially when I'm stopped in traffic.The stalling also occurs during deceleration and rarely on the highway. I had the throttle sensor replaced and since then, the car seems to run better. However, when the engine gets warmed up, the problems occur again. I also had the MAF sensor replaced. Do you have any advice on what else I could check and replace?

A: Hello. The EGR valve is most likely not clo...

Hello. The EGR valve is most likely not closing all the way when stopping due to the carbon getting in the pintle and holding it open. Then when you go to start it, it opens and releases or breaks the carbon. You may need to remove the valve and clean out carbon and decarbonize the engine from carbon build up in heads, intakes, and valves. Before throwing on more parts, you may want to have a local expert, like one from YourMechanic diagnose the hesitation issues to have this addressed appropriately.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car making grinding noise

There is a good chance that what you heard was the transmission. Transmissions are very complex systems. It is very likely that the transmission will need to be overhauled or even replaced, depending on what part of the transmission has...

Q: ignition is turning over but car won't start up

Hi there. From the description you have provided, your vehicle will turn over but the car will not start with lots of hesitation, is somewhat confusing. Assuming, the starter is turning the engine over but, not well (lots of hesitation)....

Q: Jerking while shifting during deceleration - 1989 Cadillac Brougham

Hey there. The EGR system may get carbon in it causing the jerking on deceleration. Try decarbonizing the engine to see if it helps. You may need to remove the EGR valve and clear out excess carbon from the passages....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.