Skip the auto shop - Our mechanics make house calls

Q: Runs ruff

asked by on

When car is in neutral it starts running in .5 rpms when you give gas it stays in 1.5 then drops down to .5 after like 5 min and keeps makeing noise as if it is about to stall. When I drive it has no power I did everything on it changed fuel pump checked for vacum leak changed my vacum solinoid also the ecu. Checked my Cadillac converter to and that's not it And I cleaned the egr. The car worked fine I tell I noticed it slowly started to loose power tell one point It would start.

My car has 100000 miles.

A: The engine will need to be scanned to see i...

The engine will need to be scanned to see if the MAP/Boost sensor is reading correctly and the mass airflow (MAF) sensor is not contaminated.

Check to see if the tube between the throttle body and the MAF sensor is tight and has no cracks in the hose anywhere and replace it if it does. Diagnose any codes received during testing.

If you would like some help, a good place to start would be with an inspection of your rough idle condition by a qualified mobile mechanic.

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: Engine run for a few seconds then dies

Usually a vehicle that won't rev in the manner you are describing is due to a plugged exhaust system. The most common culprit here is a catalytic converter that has come apart on the inside. If this is the case,...

Q: When I turn the key the lights come on fine, but sometimes it is hard to crank up. It makes a fast ticking noise

Hello, thanks for writing in. It sounds like either your battery voltage is low, or you have a corroded battery terminal, or both. Check the battery posts for corrosion, if you find a blob of blue green fuzzy stuff there,...

Q: Radiator / heater core issues 2002 Dodge Ram 1500

Hello - these two unfortunate events are probably only related in the sense that they are both caused by advanced mileage and age. New radiators utilize plastic end tanks that are crimp-sealed onto an aluminum fin section. The plastic in...

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...
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...
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...