Jake8474747
Newbie
Okay, I'm going out to our farm this Saturday ill let you know the details.
The Stupid Engine Questions Thread
- Thread starter Mike
- Start date
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Keep us posted
Being a '91 it should be a 4L60 ('90-'93) with a TV cable and four wires. If it somehow has a 4L60E ('93 and later), it won't have a TV cable, but the harness will have about twenty wires.
MrPink
Bainisteoir Páirteanna
@PlayingWithTBI my Fuel PSI is at 58-60 when running, which is well within spec for the vortec pump. I am replacing the FPR and Injectors here this upcoming week, hopefully it fixes the issue.
On a TBI system?
MrPink
Bainisteoir Páirteanna
yep vortec pump, i have narrowed it down to a bad FPR and crap injectors. that was tested in the feed line i will check the return as well to see it also. i haven't had much garage time in the past week.
I have an EP381 Vortec pump too but, I'm only running 20 PSI in mine. I'm confused, do you have a Vortec intake or TBI on your 95?
MrPink
Bainisteoir Páirteanna
TBI I will be running 15psi when i actually install my new FRP and hamilton injection spring since i am replacing the Injectors and rebuilding the TBI at the same time. once I get it running correctly I will be doing new timing chain, cam, headers it already has an exhaust done on it. I am not doing a crazy build as I will eventually pull it and rebuild it or build a spare 350.
ben2go
OBS Enthusiast
I helped my friend put this engine in our truck back when he owned it. I didn't see the original engine. This engine is a Jasper reman he bought new. I know he used parts from the original engine plus parts from another engine to make this engine work. I don't know what parts were used but I need the correct dipstick. This one reads over full by 1.5 quarts when we do an oil change. I also noticed that the belt routing diagram on the header panel is very different from the engine we installed. I think the block is from a newer truck and my friend combined parts to make them work together without sending the engine back for the correct one. Truck info is in sig line.
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MrPink
Bainisteoir Páirteanna
@PlayingWithTBI so the new regulator, and injectors are in and it still runs the same, the spray pattern is better and it was the last in the fuel system that wasn't touched so it was needed regardless. But does the coolant temp sensor in the intake have that much bearing on how rich it would run?
Checked the resistance of my CTS it read 5.93ohm but that was engine off just sitting in the garage. so that is leading me to believe that it is bad.
Checked the resistance of my CTS it read 5.93ohm but that was engine off just sitting in the garage. so that is leading me to believe that it is bad.
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