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quickcar, ASE Certified Technician
Category: Chrysler
Satisfied Customers: 1695
Experience:  10+years of chrysler dealership experience
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My 2001 PT cruiser 2.4 stumbles with rough idle. Have replaced

Customer Question

My 2001 PT cruiser 2.4 stumbles with rough idle. Have replaced head and timing belt. Drives ok at highway speed. Dealer mechanic has resynchronized crank and cam sensor. DRB fuel reading is-22 while idling. Any help please
Submitted: 7 years ago.
Category: Chrysler
Expert:  quickcar replied 7 years ago.
hello, one of the first things id check is the o2 sensor and make sure it switching rapidly if it is youll need to check the fuel injectors and see if they are leaking fuel. the -22 means that the pcm is seeing alot more fuel then is necessary and is removing fuel. another possibility is a restricted air intake system, whether it be the air filter or manifold and hoses, youll have you to inspect those items and see if you find any problem.
Customer: replied 7 years ago.
Have unplugged o2 sensors, and check engine light was activated, however there was no change in the way that the car runs while going down the road or while idling. Have already checked the other suggestions, also.
Expert:  quickcar replied 7 years ago.
if you have checked all those items the next thing youll want to look at is getting a compression test done, this will determine whether you have an internal engine problem or not.
Customer: replied 7 years ago.
compression is low of 122 to a high 128 the block has 160 k on it as i stated before i replaced the head
Expert:  quickcar replied 7 years ago.
it sounds like you have ruled out pretty much everything, have you double check the timing to make sure the timing marks are aligned?