So I’ve tried all I know to do before making this post. However, I have a 92 tbi that was running rich, stumbling, loss of power, and randomly dies at stops. Some times it runs fairly decent although not great other times it will barely idle. Condition seems to be getting worse. So far I’ve replaced fuel pump assembly, fuel filter, o2, egr and solenoid, map, tps, rebuilt throttle body with new regulator and injectors, distributor cap and rotor along with plugs.I bought new wires this morning and knock sensor those are going on this afternoon. I don’t have access to a Scan tool, but the truck shows no codes. It did at one point show an egr and map code but those have been replaced and no code present. I’ve swapped the ecu from two other trucks also didn’t change the problem. If the truck is stationary it revs just fine but trying to climb a hill it’s almost like a 4 barrel carb that won’t open the secondary’s. I only have hand tools a basic amp clamp multimeter and that’s about it. Haven’t checked fuel pressure but I don’t see how that could be the problem. I’ve made sure all of the grounds are connected while I’m changing the wires today I will go through and makes sure they’re clean. Aside from that I’m at a complete loss. Engine has approx 6k miles on it bought from summit several years ago. While I’m on that topic I should mention the truck has sat for 8 years after I put the motor in.
Thanks in advance,
Brandon
Edit to update: changed wire definitely had a dead wire. The rest were good high reading I had was 13k ohms I believe the book says 30k is the max. So on that note the truck sounds healthier. Still has a rough idle in park and even worse sitting in drive. Revs helps it to clear up but it’s searching a few hundred rpm. My rtv has apparently dried out on me so I have to make a trip to town to change the knock sensor. Also forgot to add that both temp sensors have been changed.
Thanks in advance,
Brandon
Edit to update: changed wire definitely had a dead wire. The rest were good high reading I had was 13k ohms I believe the book says 30k is the max. So on that note the truck sounds healthier. Still has a rough idle in park and even worse sitting in drive. Revs helps it to clear up but it’s searching a few hundred rpm. My rtv has apparently dried out on me so I have to make a trip to town to change the knock sensor. Also forgot to add that both temp sensors have been changed.
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