Question about 2001 Chevrolet Malibu
There is no CEL and no error codes. If I apply more gas or drive with overdrive on, car does not jerk. It jerks at below 2000rpm
Sounds like fuel related, as no codes show back to old skool,check all air intake/vacuum hosses for condition check for blockage in main air intake hose/pipe check for fuel pressure and injector spray pattern, check they color of deposits on the spark plugs , check exhaust is not blocked ,try this lot then let me know how your getting on
Posted on Apr 22, 2014
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Posted on Jan 02, 2017
Hi! I had the same problem with my 88 2.8 Ltr. Had dirty fuel Injectors. Put in fuel Inj. cleaner in gas tank, after a couple of days, runs like a dream,no more problems. Give it a try. Take care,Leo B. Flushme@shaw.ca
Posted on Feb 04, 2009
Dirty trans filter,stickey trans solinoid,or your torque converter is not unlocking.If you can due it yourself try running some trans flush then replace the filter.
Posted on Jan 02, 2010
Remove the mass air flow sensor and clean it.You can get mass air flow sensor cleaner at most part stores.The sensor is on the air cleaner tube that goes into the throttle body.Hope this helps.Good luck.
Posted on Feb 25, 2010
Sorry Cleef, on dial up and lost the connection.
The reason it does this at higher speeds is that more ignition spark is needed to fire the spark plugs.
Yes, it's time for a tune up.
A shop that has a scanner can identify which cylinder is causing the misfire. It will have stored a code to do this.
I hope you find a good expert on chat. If not, message me back here and I will help you find your problem.
Again, my apologies for my poor connection.
Posted on Jan 16, 2011
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The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM
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