So, I've been having some problems with my 88 Lifted GL Wagon. I'm all out of stuff to try.
The problem includes very rough idle, and major hesitation (bogging down, etc). The car is currently undrivable.
The real bummer is the smog is now up (CA), so I can't re-register it.
Here's where I'm at:
-I replaced the EGR and gasket- no change
-I replaced the plugs and wires- no change
-I replaced the Throttle position sensor with a used one- no change
-I replaced the Ignition Coil- No change
-I had a new-ish idle air control valve, but swapped in another, just to see- no major change
-I made a new paper gasket for the IAC- no change
I thought it might be a vac leak, and took it to the mechanic to try and diagnose. He said he didn't see anything, but I'm still not convinced he looked really really really hard. Who knows. I don't have much experience finding vac links.
I would appreciate any thoughts, ideas, or help folks might have. I love this car, but I'm all out of stuff to try. I don't want to have to give it up.