An ECT sensor can throw a false hot signal causing a too lean command to the injectors . That can cause a long start .
What is the dtc(code) number?
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: 1996 buick century 3.1 L,
unplug your mass mass air flow sensor an see what happens when running and let me know
Basically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value for more than 4.0 seconds. I would try cleaning out your MAF sensor with some carb cleaner and reseting the check engine light to see if it comes back on. If it does, get back on here and let us know and we will walk you through some other things you can try. Cleaning it out will be the easiest/cheapest thing for you to try right now. Good luck. Thanks for an honest rating and for using FixYa.
SOURCE: My 1998 ford mustang v6 3.8l .. is hard to start
So what you saying is it's hard to start cold right? Something in computer system not allowing excess fuel to injectors when cold. Probably sensor Get auto electrician to sort it out otherwise you end up replacing things that there is nothing wrong with They got the right gear
SOURCE: 1998 ford mustang 3.8 v6 starting problems.
it's your upper intake manifold gasket. it has a crack in it and needs to be replaced. your getting to much air and not enough gas. mine did the same thing.
The ECM receives a signal from the Mass Air Flow sensor depending on the amount of air entering the engine. The ECM uses information from this sensor to help calculate fuel delivery and spark timing.
Fault Code Description
Symptoms
Common Problems Faulty Mass Air Flow sensor,Broken wire to Mass Air Flow sensor,Dirty sensing element in Mass Air Flow sensor
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