Skip the auto shop - Our mechanics make house calls

Q: Shuddering, check engine light on. 2005 Saab 9-2X

asked by on

My car started having some problems after several repairs have been done. These included the water pump, AC belt and timing belt kit replacement, along with the front camshaft seal, alternator belt and power steering belt change. About a month later, the car developed a misfiring issue on the third cylinder which I found out about at the mechanic's. The car would shudder at higher speeds. The dash shows a check engine light on as well. The mechanic also found the compression was as low as 21 PSI. What could cause this? Have the previous repairs maybe caused this problem?

A: Hello. It is possible that the previous rep...

Hello. It is possible that the previous repairs could cause this problem. It is also equally possible that the new problems are not related to the previous problems that you were having. If the timing belt is not on the proper timing, it could cause a misfire condition and low compression in the engine. There also could be a problem with the third cylinder of the car. The valves could be burned or the piston damaged. If this is the case, it would be necessary to have the entire engine replaced or rebuilt. If you need help scoping out the problem, have a certified technician, like one from YourMechanic, come and inspect the Check Engine Light and the timing for proper alignment.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Some of the time my 2013 Chevrolet Malibu will not start.

Hello. If you are getting a check engine light along with a no start, but there are no codes then you may have a computer issue or a voltage problem. I would need to know if the engine will crank...

Q: Temperature gauge problem on a 2005 Mercedes Benz S500

Hello - I would first check for problem codes, whether the Check Engine light is illuminated or not. And, if the engine is not really overheating, the problem is most likely the engine temperature sensor (the sensor for the gauge,...

Q: 2006 Jetta gli timing belt broke while driving on highway, valves damaged is it worth fixing

The car is worth between $5500 and $6500 with a running motor. If you spend $3500 to fix it then sell it outright you may profit about $2000 to $3000. If you trade it you may get $4500 or less...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.