Replaced the neutral safety switch due to issues with the radio and power steering and the car started missing at idle. Next codes indicated MAF sensor. I recently cleaned the sensor so I replaced it along with new plugs and wires. No codes but the miss is intermittent at idol and sometimes at start up. If you are sitting still at a stop light the miss will all of the sudden start. If you raise the rpm it goes away. I am wondering if there is an issue with an injector or if the new neutral safety switch is bad. Also replaced the EGR plumbing due to the hoses being soft.
Ford Q&AAsk Your Question
1997 Ford Taurus Question: 1997 Ford DOCH intermittent miss at idol and start up what could it be due to
Answer #1Camster January 28, 2012, 06:01Technician
Could be the coil unit.Not an uncommon malady that gives that symptom.
Replypuddlejumper67, March 06, 2012, 05:27Rookie
You are correct in your statement that it was the coil. The engine went to a constant miss then it threw a p0303 code for cylinder 3 misfire and p0171 bank 1 lean. After some diagnostics it was found that the spark for cylinder 3 was almost impossible to see. Replaced the coil pack since this is a durateck doch v6 and it runs like new. Thanks you were right on!
ReplyCamster, March 06, 2012, 05:35Technician
You're welcome.I experienced that same sort of miss on my 02 Taurus.Even an expert thought the problem was somewhere else,but the problem was still there after I replaced several other parts,and the coil became the only possible culprit.
Replypuddlejumper67, March 08, 2012, 05:33Rookie
Yeah, the mechanics were thinking it was a compression problem or some other type of mechanical issue on mine, possibly a valve. After a compression check the range was from 170 psig to 185 psig. The fuel injectors were spraying ok too.