1987 Nissan Truck Engine and throtle body getting to much g

chrisw629 · Posted at Sun May 25, 2008 5:56 pm

Engine Performance problem
1987 Nissan Truck 4 cyl Two Wheel Drive Manual 385000 miles
----------------------------------------------------------------
About two weeks ago my truck flooded out (too much gas) and shut off. I waited a few minutes and restarted it.i had the same problem a week ago and now it won't stay running at idle, i can keep it running with the accelerator, but it popps and backfires. i have tested both coils, and coil control modules, i have also replaced the throtle position sensor after checking the cpu for codes, the cpu had codes for throtle position sensor malfunction and coolant temp sensor curcuit failure.

please help

Advertisment · Posted at Sun May 25, 2008 5:56 pm

rasmataz · Posted at Mon May 26, 2008 1:02 pm

Check the fuel pressure to rule out the pressure regulator and a clogged fuel return line. Could also be injector/s not closing completely. Or the CTS and O2 not switching.