Ok, This may be a long shot, but here goes.....Shortly after purchasing my 1994 FZJ80 I made the rookie mistake of trying to remove what I thought was the MAF from the VAF body. I was not aware of the damage I caused and attempted to start the truck numerus times after doing this. Since making that critical mistake I have been chasing a rough idle. I've replaced the VAF and a boat load of other parts. Is it possible the damaged VAF somehow damaged the ECU?
I'm down to looking at a valve adjustment and injectors otherwise. A rebuilt ECU is cheaper than either of those. Below is a list of items I've replaced or work performed chasing this rough idle. OEM parts were used when available.
I'm down to looking at a valve adjustment and injectors otherwise. A rebuilt ECU is cheaper than either of those. Below is a list of items I've replaced or work performed chasing this rough idle. OEM parts were used when available.
SPARK PLUGS (Gap Checked) | |||||
IGNITION COIL | |||||
SPARK PLUG WIRES | |||||
DISTRIBUTOR CAP & SEAL | |||||
DISTRIBUTOR ROTOR | |||||
FUEL PRESSURE REGULATOR / O-RING | |||||
IDLE AIR CONTROL VALVE & O-RING | |||||
VAF REPLACED WITH REBUILT | |||||
INTAKE AIR HOSE | |||||
PCV VALVE | |||||
REPLACEMENT OF VACUUM HOSES | |||||
OXYGEN SENSORS REPLACED (2) | |||||
FUEL FILTER | |||||
OIL FILLER CAP | |||||
TROTTLE POSITION SENSOR | |||||
| |||||
TIMING CHECKED (4 DEGREES) | |||||
SMOKE TESTED VACUUM LINES AT INTAKE | |||||
EGR VALVE CLEANED-TESTED | |||||
IDLE CONTROL VALVE PORT CLEANED | |||||
EGR MANIFOLD PORT CLEANED ENGINE COMPRESSION TESTED |
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