Question about 1994 Cadillac Fleetwood

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Hesitation and missing in my 1994 fleetwood

I just had my fuel pump replaced TWICE after 45 mins of driving it quit on me and the shop i took it to said that the new fuel pump i bought failed so after they replaced that fuel pump and a #8 cynlinder wire which a code came up and said the wire was defective, i now have jerking while stopped at a light or even when im leaving my driveway my car does this jerking action that it has never done before, the only problem i have left from the codes was a code 64 which is low voltage to the right side O2 sensor, what could cause my car to **** while stopped

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: Hesitation problem

try cleaning the inside of the MAF sensor and do the following procedure as well.
Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Mar 24, 2009

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nicole99wu
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SOURCE: reset the ecm on my 93 fleetwood, took it for a drive till the service engine light came on. checked the codes and the only one that is says is a 44 witch says the the o2 sensor on the left side is se

You can have a try of this tool --- Autocom CDP 2011. It is a PC based OBD2 diagnostic tool with full functionality for reading and erasing diagnostic fault codes. Very easy to operate.

Posted on Jul 26, 2012

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