Skip the auto shop - Our mechanics make house calls

Q: Serpentine belt constantly slips off

asked by on

The serpentine belt on my 99 ford escort ZX2 constantly slips off. I have to put the belt back on at least 3 times a week. I've recently replaced it with a new belt and it still happens. I notice that every time I start my car, the belt slides off a bit on the tensioner. I'm not sure if the tensioner is misaligned or if it's broken and needs a replacement. Any help would be appreciated. Thanks in advance.

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

A: Hi. Most likely there is something out of a...

Hi. Most likely there is something out of alignment in your pulley system causing the belt to come off. The first thing to inspect would be the idler pulley. Remove the belt and check if the pulley wobbles. If so, the bearing is out and causing the pulley to be out of alignment. If you need to have the fault correctly identified and repaired, a certified professional from YourMechanic can come to your car's location to inspect the car and follow up with 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 truns over but wont start getting gas

You need to have the vehicle checked by scanning for codes that may point to the possible cause. It sounds like the crankshaft sensor may have been damaged when the pulley broke. If you need further assistance diagnosing your cars...

Q: Car won't turn over

Hi. A bad fuel pump or clogged filter will keep your car from running, but not from turning over. The low battery might be the reason the car does not turn over. A charged battery will be necessary to properly...

Q: I have an 00 acura tl and while i was driving the serpentine belt snapped on me, so wen it snapped on me the engine shut off

You may have damaged the crankshaft or camshaft sensors or wires to these sensors. Have the vehicle scanned and the data checked to see if you lost data from one of these sensors. Afterwards, inspect the sensor and wiring to...

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 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.
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.