engine surging at idle and cruising speed
#1
engine surging at idle and cruising speed
this seems to be a big problem with tpi motors and so many different things that can cause this. i have been reading many of the threads on this. my car is an 89 gta 350 it surges at idle and cruising speeds, i have replace the plugs, wires, distributor, cap and rotor, O2 sensor, mass air, cleaned the throtle body. my egr holds a vacume, i tryed to check my fuel presure but my gauge is missing the thing inside to push down the shrader valve, i checked my injectors and found that 3 on the left bank are bad 5.7, 10.1, and 11.0 ohms. all the others are at 17.0 ohms. i have been told by several people i know that say even though three injectors are bad it wont cause it to surge. it also has code 34 and 44. any help would be greatly appriciated. thank you
#2
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Car: 1989 GTA
Engine: 350TPI w/ Speed Density
Transmission: 700r4
Axle/Gears: Borg warner 3.27
Re: engine surging at idle and cruising speed
Start with what you know is bad. Code 34 is the MAF sensor. Find a junkyard maf to swap in (since new ones are expensive). Replace your injectors too. You can save the oxygen sensor (code 44) for a little bit later, but I'd replace that too - it's only a 30 dollar part from a chevy dealership. By the way, when you replace the O2 sensor, make sure you buy the dealership unit. The bosch units don't work well with our computers (do a quick search, you'll see)
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