Correct Fuel Pressure 1987 350

[hikertrash87c10]

I have a 1987 with the TBI 350 in it and am having some idel fluctation, right after start up, and ramdom stalling after about 30 minutes of driving. I have changed the MAP sensor, Ignition module after it threw a code 32 and 42. Hooked up a fuel pressure gauge and was right around 10lbs but i think i need to be higher? Can i just drop in a high performance fuel pump and see if that solves my issues? ive also check for vac leaks with propane and that didnt turn up anything. Any thing else I should be trying? All help is greatly appreciated!

 

[gmbellew]

10psi is the low end of spec (9-13psi).

code 32 is EGR, not MAP. could be the EGR valve is stuck open or the EGR solenoid might be bad.

did the code 42 come back after the new ICM was installed?

 

[hikertrash87c10]

10-4 on the low end of PSI- have you seen better results with a new fuel pump or maybe an aftermartke fuel pressure regulator?

42 went away after new ACDELC ICM.

 

[gmbellew]

If you still are getting code 32, I'd diagnose that before I made any other changes