I have an 87 442 VIN9 motor running top notch on the computer in my 85 442. It's been rebuilt, as was the trans with a light shift kit (KCF from an 87 Salon) and has a 7.5" 3.73 posi from an '83 Hurst.
After 30 minutes of driving this morning I got on the gas really good at WOTand the idle bumped up from 850 in drive to 1100 rpm in drive and 1100 to 2400 rpm in park.
I checked the carb for sticking linkage, choke bits, secondaries etc. to see if anything was sticking and nothing was. I even turned down the idle screw all the way with no change.
Is it possible that the mixture solinoid is causing the high idle or the ignition module in the distributor after putting the motor through the ringer?
Would a stuck TPS plunger in the carb body do this?
It's not mechanical, no vacuum leaks either... more of a computer issue...
I suspect it will be back to normal come lunch time, just curious as to what may cause this.
BTW I managed to go 62 miles yesterday on 3.2 gallons of gas with extremely light driving, 19.3mpg is pretty good for 80's technology
After 30 minutes of driving this morning I got on the gas really good at WOTand the idle bumped up from 850 in drive to 1100 rpm in drive and 1100 to 2400 rpm in park.
I checked the carb for sticking linkage, choke bits, secondaries etc. to see if anything was sticking and nothing was. I even turned down the idle screw all the way with no change.
Is it possible that the mixture solinoid is causing the high idle or the ignition module in the distributor after putting the motor through the ringer?
Would a stuck TPS plunger in the carb body do this?
It's not mechanical, no vacuum leaks either... more of a computer issue...
I suspect it will be back to normal come lunch time, just curious as to what may cause this.
BTW I managed to go 62 miles yesterday on 3.2 gallons of gas with extremely light driving, 19.3mpg is pretty good for 80's technology