Skip the auto shop - Our mechanics make house calls

Q: Engine stumbling on a '98 Regal

asked by on

98 Regal 3800 idles fine stopped in traffic. Led up on the brake on the creek port, the engine starts to stumble a bit. Apply the brakes to stop rolling until it clears up. Speed sensor?

A: No, it wouldn't be the speed sensor. Th...

No, it wouldn't be the speed sensor. That's just the old age and any minor thing can do that. On that particular vehicle, I'd advise doing my video "how to clean fuel injectors on your car" and if you're not mechanically inclined, have a mechanic come and do a fuel pressure cleaning of the fuel injection system. A lot of times, dirty fuel injectors do that. And of course, since it is old, if it needs a tune up then have that done. If the spark plug wires are old, change them. If the spark plugs themselves are old, change them as well.

It could just need a tune-up. Since you are just idling and then stopping and going, any minor flaw is going to show up, and you're not going to notice it while you're driving.

Was this answer helpful?
Recommended services
Get a Quote

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・Save up to 30%

Get a quote

What others are asking

Q: Cold engine problems

There are numerous potential causes for the problem you are having. One thing that comes to mind is a failed engine coolant temperature sensor (ETC). The ECT does exactly what it sounds like - it monitors engine temperature. The ECT's...

Q: Trunk pops open

Hello. The right solution to this problem would depend on whether you have a motorized trunk latch, or a touch pad system. If you have a motorized trunk latch, the problem could be that the latch is not catching; so...

Q: Engine idling and check engine light on

Carbon build-up on the intake valves is a common issue on the IS250. Lexus recommends to remove the valves and clean them while other manufacturers use anything from an intake cleaning solvent to sandblasting using walnut shells to remove the...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...