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86 b2 running like crap need help


bIIjr

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Sep 2, 2012
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Location
southern pa
Vehicle Year
1986
Make / Model
ford
Engine Size
2.9
Transmission
Automatic
Ok so my bii is running like crap it is a 2.9 with a4ld. It starts fine when cold it does have a miss can barely get out of its own way and won't restart after warm up. I have replaced tank pump plugs twice do to carbon fouling, tfi as well as pick up coil, wires cap and rotor, ignition coil, and the switch on fire wall. And the fuel pump relays, and the iac, I have ordered a O2 sensor today it's getting fuel and spark. When I run codes I get egr related codes. Could the egr really do this ?? Where else do I look ?? I also have a coolent sensor I haven't put in yet. Not sure if it's worth the mention but oil pressure gauge don't work. I by passed the inertia switch as well since it's off road only


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Last edited:


sjr53

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Grand Forks North Dakota
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1988
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Ford
Engine Size
2.9L
Transmission
Manual
Sounds like a Fuel Pressure Regulator that leaks fuel into the vacuum line and flooding it for restarts and causes the back cylinder(s) to misfire at idle and low rpm. A very common fault in my experience.
 

bIIjr

New Member
Joined
Sep 2, 2012
Messages
110
Reaction score
0
Points
0
Location
southern pa
Vehicle Year
1986
Make / Model
ford
Engine Size
2.9
Transmission
Automatic
Well I pulled the throttle body off yesterday after noticing how dirty it was. The ports the flow down into the egr was blocked shut would this contribute ?? I never dealt with egr so forgive me for being stupid


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