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?

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Wheezing when i press he gas more than 30 mph

Hello. The noises you are hearing are impossible to fully diagnose without the vehicle here. Lets begin with talking about that Check Engine Light. The light illuminates when certain codes are sent to the main computer. Not all codes...

Q: Accelerating and idle problems

This is a common sign of a failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine. This valve is controlled by the...

Q: My 1989 Cadillac has a weird smell after running for a while not sure if it's a fuel smell or coolant need to know what to do help

It is very likely that you have a fluid leak that is burning on the hot exhaust. I would recommend having an oil/fluid leak inspection performed to determine the exact cause of this issue. Consider Your Mechanic as this can...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...