shorter.
All you need to do is defeat the EGR. (all 1996 cars can report bad EGR and it can be OK)
if the engine runs poorly in ANY REGARD, then fix this first, and not activate the EGR, until this list passes.
1: no other DTCs. after defeating EGR, and ignoring p0400s if they pop.
2: idle controls work , eg: 800RPM hot idle and you can turn on all accessories in car and idle does not drop below or above 800rpm (50rpm plus minus ok).AC on is 1000 hot, you can turn on defrost, heater fan and Head lights and 800 happens,
RPM surge not acceptable,
if not we find out why.
3: engine holds closed loop status via scan tool.
4: engine does NOT misfire.
5: engine power good. and mpg if time permits checking mpg.
6: spark tips not turning black. (or green or oil soaked)
7: 02 senor swings nice at idle, if your scan tool lets you watch it, most do.
8: spark timing at spec, and not way off due to cam belt slip.) both must be at spec.
to defeat egr:
pull egr main hose, at main, (rear of engine intake)
plug hose with golf tee
now evaluate.
make sure the main EGR is closed, if new IT IS, its has a strong spring insided.
once sure engine runs perfect , activate EGR.
All you need to do is defeat the EGR. (all 1996 cars can report bad EGR and it can be OK)
if the engine runs poorly in ANY REGARD, then fix this first, and not activate the EGR, until this list passes.
1: no other DTCs. after defeating EGR, and ignoring p0400s if they pop.
2: idle controls work , eg: 800RPM hot idle and you can turn on all accessories in car and idle does not drop below or above 800rpm (50rpm plus minus ok).AC on is 1000 hot, you can turn on defrost, heater fan and Head lights and 800 happens,
RPM surge not acceptable,
if not we find out why.
3: engine holds closed loop status via scan tool.
4: engine does NOT misfire.
5: engine power good. and mpg if time permits checking mpg.
6: spark tips not turning black. (or green or oil soaked)
7: 02 senor swings nice at idle, if your scan tool lets you watch it, most do.
8: spark timing at spec, and not way off due to cam belt slip.) both must be at spec.
to defeat egr:
pull egr main hose, at main, (rear of engine intake)
plug hose with golf tee
now evaluate.
make sure the main EGR is closed, if new IT IS, its has a strong spring insided.
once sure engine runs perfect , activate EGR.
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