Skip the auto shop - Our mechanics make house calls

Q: engine runs rough

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. It seems sounds like the mechanic...

Hi there. It seems sounds like 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, reset the timing, and put the belt back on. If you need further assistance diagnosing your vehicle, you may want to have another expert inspect the rough running issue and move forward with any needed repairs.

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・Save up to 30%

Get a quote

What others are asking

Q: Car cutting off

I would need more information on what repairs were performed to be able to give a more full answer. But by cutting off, I am assuming the car stops running. This could be be caused by a few things, such...

Q: my car is having Weird cranking, grinding noise at start for few seconds when my car is cold

Is the grinding noise coming from the starter as it is being turned, or from the engine when it is starting up? The starter will grind when it is improperly installed, or it is broken and the gears are not...

Q: What is the specific torque for the rod bearing of a 2001 Acura 3.2 TL?

Hello, thanks for writing in about your 2001 Acura TL.According to AllData, the specifications are: Connecting Rod Bolt Torque 20 N-m (2.0 kgf-cm, 14 lbf-ft) If you end up needing any help with your vehicle, consider YourMechanic, as one of...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...
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.