I just purchased an '87 V10 4x4 with the 305 TBI and on the first long trip the Check Engine light came on...
I was driving for about 15 minutes (maybe 13 miles) and the light came on. After turning off the engine, the light cleared and did not come back immediately when restarting the engine. It seems to only come on after 15 minutes or so of driving. There does not seem to be anything wrong with the running condition of the engine as there is no visible or audible performance issue when the light is on...
When I disconnected the battery to clear the code, it was 3 or more driving trips before the light and the code returned.
Any ideas?
There are two different issues possible according to:
http://www.iroczone.com/specs/TroubleCodes.htm
Code 32
Baro sensor circuit
Short between sensor terminals B and C or faulty wiring therein.
Faulty or loose wiring and/or connections at the ECM (Terminals 1, 21 and 22).
Faulty Baro sensor
Code 32
EGR system
Faulty EGR valve.
Faulty or loose wiring and/or connections at the EGR solenoid.
Faulty, loose and/or leaking vacuum hoses to EGR valve.
I would appreciate any suggestions.
Steven