What can cause jerking on heavy acceleration when AC is on in my 2008 PT Cruiser Convertable?

Octoberschild
85

Asked by Octoberschild Aug 12, 2012 at 08:08 PM about the 2008 Chrysler PT Cruiser Convertible

Question type: Maintenance & Repair

The service engine light came on in my car. It's come on before and then gone off. Yesterday after driving about 5 miles, upon trying to accelerate my PT started jerking. If I ease off the accelerator then it will run ok without the jerking. I had my daughter come over with her computer reader to diagnose the problem for me. No codes came up. She took it and test drove it, and it didn't do the jerking. Today I go out and have the AC going, the check service engine light comes on again and then the car starts in jerking on heavy acceleration again. I decided to try turning off the AC to see if that made a difference, it did. The car did not jerk any longer as long as I left the AC off. What could be causing my car to act up like this? Also, the service engine light stayed on even with the AC off and no jerking. I just had it checked out and a service done on it about 2 weeks ago. They said it had a clean bill of health....no problems. Now this!!! Can someone give me a clue as to what is going on...PLEASE????

3 Answers

Octoberschild
85

I finally figured out what was causing my car to jerk upon fast acceleration. I took my car to Autozone as my son suggested. They will hook up a computer reader to your car and get a print out of all the codes that come up. They will then give you the print out telling you what it showed as possible things wrong. I had two codes. One was saying the gas cap on my car was faulty and most likely needed to be replaced. Inexpensive quick fix! I more or less figured something was going on with it considering the gas cap light lit up from time to time on my dash. The other thing it suggested was my cam sensor. Another relatively inexpensive part replacement. If you buy it at the auto parts store it's a few dollars less then at the dealership. The parts store has two types, I chose the one with a lifetime warranty on it. My son installed the part for me which was an easy install, and my car is now running great again! :)

6 out of 6 people think this is helpful.
MileHiCity
10

Octoberschild, I had the same problem. When I turned off the ac, it was fine. Finally got tired of not using ac so when it acted up, I took it to the mechanic. Ended up being an accelerator sensor. Hope this helped :)

1 out of 1 people think this is helpful.
boozersdad
40

my 2007 pt did same thing, engine light came on , car was jerking and bucking, ( had nothing to do with the a/c or heat) it was the cam positon sensor, on line the part is 35.99 to 55.99 depending on where you buy it, local garage did mine part and labor for 162.00

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

PT Cruiser
Looking for a Used PT Cruiser in your area?
CarGurus has 5,351 nationwide PT Cruiser listings starting at $1,499.
ZIP:

Search Chrysler PT Cruiser Questions

Chrysler PT Cruiser Experts

#1 Tom Demyan
Tom Demyan
Reputation 570
#2 Steven Hood
Steven Hood
Reputation 410
#3 thefrozendog
thefrozendog
Reputation 370
View All

Related Models For Sale

Used Chevrolet HHR"
354 Great Deals out of 5,823 listings starting at $1,500
Used Volkswagen Beetle"
346 Great Deals out of 12,093 listings starting at $1,000
Used Honda Civic"
977 Great Deals out of 60,993 listings starting at $998
Used MINI Cooper"
323 Great Deals out of 12,315 listings starting at $3,800
Used Ford Mustang"
967 Great Deals out of 27,807 listings starting at $1,500
Used Nissan Altima"
1,575 Great Deals out of 87,889 listings starting at $1,000
Used Chrysler 300"
643 Great Deals out of 20,813 listings starting at $2,500
Used Honda Accord"
1,270 Great Deals out of 70,169 listings starting at $1,288
Used Chrysler Sebring"
236 Great Deals out of 5,426 listings starting at $995
Used Ford Focus"
1,490 Great Deals out of 64,985 listings starting at $1,450
Used Dodge Caliber"
196 Great Deals out of 4,146 listings starting at $2,995
Used Toyota Corolla"
1,129 Great Deals out of 60,269 listings starting at $1,300
Used Volkswagen Jetta"
1,075 Great Deals out of 39,301 listings starting at $995
Used Ford Escape"
1,277 Great Deals out of 60,413 listings starting at $1,400
Used Toyota Camry"
1,458 Great Deals out of 74,456 listings starting at $1,450

Used Cars For Sale

2008 Chrysler PT Cruiser Convertible For Sale
17 listings starting at $5,895