MAF issue/ computer tune
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Joined: Jan 2007
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MAF issue/ computer tune
Just thought Id drop in and see if I could get a second opinion on this. I have a 92 F-150 302 and a few months back, when idling, it was really rough and would flucuate between 1000rpm to 500 rpm and eventually die out. I pulled the plug on the MAF sensor and now it idles but OF COURSE is running really lean. I keep replacing the MAF with junkyard MAFs (mainly from 93 mustangs). I know that this can be really bad for the motor since the ECC reads that to tell the motor what to do (ie fuel/air ratio). Since a new MAF is pretty expensive would I be better off just hooking back up the sensor and get a computer tune and see if that will fix the issue?
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Reconnect your MAF meter and pull the codes from the computer, that should always be the first step when troubleshooting an EFI motor. On a side note, idle problems on these motors are often related to a dirty IAC(idle air control) valve, rinsing it liberally with carb cleaner while the engine is running often smooths things out.
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Joined: Jan 2007
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thanxs a bunch. Took off the throttle body cleaned it up a little (lot of build up) cleaned the IAC, delayed the timing just a bit and it puuuuurrrrsss like a kitten along with that nice chop to go with the cam 
