Jakal3482
NAXJA Forum User
- Location
- Battle ground, wa
I have a 90 cherokee. I bought it and the guy had just rebuilt the engine. Basically what it does.it falls on its face when you take off from a dead stop, and when in neutral it backfires through the intake.
I have tested the tps, map, cps, iac, cleaned the throttle body, tune up with champion plugs, and no change.
The Strange thing is when I unplug the map sensor vacuum line it doesn't do it, just idles like crap.
I dont think the bendix brakes are tied into the system at all. And off the intake manifold it holds 14 psi vacuum at idle with no fluctuation.
With the map plugged in at idle I'm at 15° on the timing mark, I unplug the vacuum line and it drops to 8°.
Maybe I'm going about It all wrong. I'm not sure where to look. I tried to smove test for leaks and got nothing.
My egr is deleted and everything is capped off, or plugged.
Any help is greatly appreciated.
I have tested the tps, map, cps, iac, cleaned the throttle body, tune up with champion plugs, and no change.
The Strange thing is when I unplug the map sensor vacuum line it doesn't do it, just idles like crap.
I dont think the bendix brakes are tied into the system at all. And off the intake manifold it holds 14 psi vacuum at idle with no fluctuation.
With the map plugged in at idle I'm at 15° on the timing mark, I unplug the vacuum line and it drops to 8°.
Maybe I'm going about It all wrong. I'm not sure where to look. I tried to smove test for leaks and got nothing.
My egr is deleted and everything is capped off, or plugged.
Any help is greatly appreciated.