Skip the auto shop - Our mechanics make house calls

Q: My car's engine runs rough at idle - 2001 Chrysler Voyager

asked by on

hi I have 2001 Chrysler voyager 4 cylinder. recently a mobile mechanic changed my water pump and after than the car runs very rough at ide and sometimes shuts off as soon I slow down lets say from 40 miles to zero . This model required removing the timing belt to get to the water pump.

I took vacuum reading in idle with a gauge and the reading is below normal. is that just a vacuum leak or does the car have other problems. please see the video below. I appreciate you or anyone else that could help me in a right direction. thank you

https://www.youtube.com/watch?v=nzxigI73OGo

My car has 180000 miles.
My car has an automatic transmission.

A: Hi there. From what you’ve described/shown,...

Hi there. From what you’ve described/shown, it seems that the mechanic put the timing belt back on one tooth off. If all of a sudden the engine is not running correctly and the vacuum has dropped, then a valve is staying open a little causing this symptom.

Check the timing on the camshaft and the crankshaft to ensure that they are aligned up correctly. If they are off, then you will need to remove the timing belt and reset the timing and put the belt back on.

If you need further assistance diagnosing you car’s rough idle, then seek out a professional, such as one from Your Mechanic, to help you with your vehicle at your home or office.

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: Camshaft timing - 2000 Audi A6 V6

I am working on this

Q: Can you help me with this high pitch squeal before I find a cliff?

Remove the serpentine belt (as well as other belts - but ONE at a time so you can isolate the component) and turn the engine on (do NOT run engine long, just enough to do test). By removing the belt,...

Q: live texelerater then enjen is off immediately

This is likely a sign of a failing throttle position sensor. As you may know, this is a sensor that monitors your foot's position on the gas pedal relaying this information to the car's computer. Depending on where your foot...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.