Whent the TA starts, it runs alright, but when I stop at a light or sign, the engine idles really low in drive, but dies in reverse. Also, after replacing the battery cable terminal leads, it ran fine, but now it wont turn over, it is getting fuel and air, but no spark, and the terminals are tight, so the battery is giving voltage
SOURCE: 1999 pontiac grand prix . will not run
If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
See http://www.greatautohelp.com
SOURCE: 85 trans am 305 mpfi rough idle at start
check your Temp sensor for the ecu. could be out of spec at lower temps but not enough to send a code "You know -40 is possible and won't send a code"
SOURCE: car idles rough and stalls
Have you ever changed the fuel filter? If it's not that, and it's not a vacuum leak, it is probably your idle air control valve.
SOURCE: My servie engine light is on with the code PO108
the problem is youer map sensor or wirers to sensor
code p0108.is Manifold Absolute Pressure/Barometric Pressure Circuit High Input
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