HI, I have a 1990 B2600i 4x4 that I just did the head gasket on, and now it starts and idles great but won't rev above 2000 rpm. I put in a new TPS and changed plugs and wires.

HELP,
Nate

 

Are you sure the ECU (computer) is good? They are known to have 2 leaky capacitors that can etch the circuit board and therefore cause issues with the injector circuits.
Have you had this truck running normal prior to the head gasket repair?

 

Bad capacitor in the center of picture (turned upside down to show where the leads corroded off of it from the capacitor leaking acid)....



Close up of where the capacitor is supposed to mount on the board (at white circle C103) and the surrounding corrosion from the leaking capacitor acid.....

 

Might sound dumb, but I've seen folks crew up on this before: check and re-check the spark wires orientation on the distributor cap.

 

yeah, I inspected my ecu and tried the one in my brothers truck(same truck) not the problem. thanks!

 

Thanks, I have. they are correct

 

Rubber air intake tube sealed up good? They split open as they get old, at the ends where connected to the aluminum intake tube, and/or the MAF, and any air intake not going through the MAF could pose a problem........got any pics of the engine compartment?

I do!

 

Yipes ! Last time I said "I do" I ended up with Mrs. Cusser !!!!

 

haha! I can get a picture today after work.

 

What is Susan Sarandon doing in your truck?