sledneck07
Well-Known Member
- Joined
- Dec 13, 2009
- Messages
- 91
- Vehicle Year
- 1991
- Transmission
- Manual
well to start off my 91 4.0l with auto blew a head gasket. had a 94 4.0 and manual in the shop. so i swapped both engine and tranny so now i have a 94 engine with all 91 sensors, ignition and and fuel system and a manal tranny with the 91 auto ecm. it misses and backfires when it has a load on it and accerlation, but no load it revs up good, has a slight miss at idle but no worse than before. also i have a snapping sound (like when you hold a spark plug aginst the block to check spark, or a broken plug wore arcing) at idle and goes up and down with engine speed. i hooked a scanner up to it and it comes up with a code 86 0=4-3 SS FAULT/C=FUEL AT RICH LIMIT. anybody know what this means? also changed fuel filter in may and just changed plugs and wires. also if this helps in have other info from the scanner
TPS 1.01 - 4.65
ECT .61
IAT=ACT 1.71
IAC 31% - 66%
O2S1 58mv - 952mv
BARO 96
IAT 53*C
ECT 90*C
OPEN/CLOSED LOOP (OPENS AND CLOSES PROPER)
VREF(V) 5.01
CANP=PURGE OFF
any help is greatly appreacitaed
TPS 1.01 - 4.65
ECT .61
IAT=ACT 1.71
IAC 31% - 66%
O2S1 58mv - 952mv
BARO 96
IAT 53*C
ECT 90*C
OPEN/CLOSED LOOP (OPENS AND CLOSES PROPER)
VREF(V) 5.01
CANP=PURGE OFF
any help is greatly appreacitaed