mr456
New member
PUMPINSTEIN--Please read
You said your a mechanic right? Well I will assume automobile mechanic. Any way I have a 1988 Chevy 4x4 5.7 TBI, 700-R4 tranny,light 3/4ton truck.
Anyway thing just starts runnin like shit about a week ago. Only upon hard accleration..falls on its face. Since last week I have put on: water pump,coil,plugs,plug wires,cap,rotor and it didn't do shit. It would start barely and needed to be blown out to run worth a crap(accelerator to the floor to start it too)
So I decided to change the ignition module. After this it popped right off and ran fine. So i put all my tools away and then its starts running shitty again. If you punch it at idle it is VERY responsive...but as soon as you try to put it in gear, the rpm's drop and it won't go..even if you try to feather the throttle..it just dies. Then you have to floor it to get it to start.....then its got great throttle response..then you try to move and it dies!!
I have also checked the timimg and it is right on the money. I was getting NO codes until I had to unplug the EST sensor to check the timing and now of course I am getting a code 42 which is that sensor. I cleared the codes but am still getting a 42. All I know is that I am at about my wits fukin end!!! If you got any ideas please feel free to share them with me. My personal opinion is that it is getting too much fuel for one reason or another...cause its blowing black smoke out the exhaust....anyway let meknow if you got any clues..cause I am about ready to sell it!!! Thnks...........456
You said your a mechanic right? Well I will assume automobile mechanic. Any way I have a 1988 Chevy 4x4 5.7 TBI, 700-R4 tranny,light 3/4ton truck.
Anyway thing just starts runnin like shit about a week ago. Only upon hard accleration..falls on its face. Since last week I have put on: water pump,coil,plugs,plug wires,cap,rotor and it didn't do shit. It would start barely and needed to be blown out to run worth a crap(accelerator to the floor to start it too)
So I decided to change the ignition module. After this it popped right off and ran fine. So i put all my tools away and then its starts running shitty again. If you punch it at idle it is VERY responsive...but as soon as you try to put it in gear, the rpm's drop and it won't go..even if you try to feather the throttle..it just dies. Then you have to floor it to get it to start.....then its got great throttle response..then you try to move and it dies!!
I have also checked the timimg and it is right on the money. I was getting NO codes until I had to unplug the EST sensor to check the timing and now of course I am getting a code 42 which is that sensor. I cleared the codes but am still getting a 42. All I know is that I am at about my wits fukin end!!! If you got any ideas please feel free to share them with me. My personal opinion is that it is getting too much fuel for one reason or another...cause its blowing black smoke out the exhaust....anyway let meknow if you got any clues..cause I am about ready to sell it!!! Thnks...........456
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