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I was having problems like that on during my dyno years ago. It wouldnt shut off but would just cut out. Id throw it in neutral and it would catch and keep running. Landed up being my opti. Does this happen everytime? Maybe fuel filter, fuel pump or injector issue.
1994 lt1 auto . cruises good ! But when stomped on it turns off !!
Thanks, Robert
Does it do it all the time, hot and cold?
You would see a bad fuel filter when cruising fast due to low flow…usually.
Will it act up in neutral just standing still.
At the very least I would hang a fuel pressure gauge on it and check the pressure.
I would also check for codes just to see if there is anything there.
I would also check the TPS with a volt meter. Connect to the wiper (dark blue wire) and move the accelerator to check voltage. Make sure there are no dead spots.
I would hook fuel gauge up to it. Tape it to the window and take it for a drive. Check pressure at idle, under load and WOT. Should let you know whats going on. Gas related or electrical.
well does it start? if it just shuts off at WOT then stay off it. If its cutting out or even off under load, check plugs, plug wires and wires at opti.
You would see a bad fuel filter when cruising fast due to low flow…usually.
Will it act up in neutral just standing still.
At the very least I would hang a fuel pressure gauge on it and check the pressure.
I would also check for codes just to see if there is anything there.
I would also check the TPS with a volt meter. Connect to the wiper (dark blue wire) and move the accelerator to check voltage. Make sure there are no dead spots.
after it turns off ! i get it restarted it turns off a few more times ! then it stays on ! i rap it 4-5 grand sounds good ! then take off cruising again ! then step on it it turns off ! smells like old gas !
well does it start? if it just shuts off at WOT then stay off it. If its cutting out or even off under load, check plugs, plug wires and wires at opti.
You can unplug 1 fuel injector at a time & see if the engine RPM's drop down at idle speed or not.
If no change in idle speed with that fuel injector unplugged,
It likely is bad.
Difficult to troubleshoot correct without a Digital DVM multimeter,
cylinder compression tester, simple hand tools, FP gauge, ect.
Broke down in the past too & all tools left at home.
Not fun.
Called around & 3 friends brought tools I needed from each & parts.
Got my car going again.
started 2 mess wit car again ! It will idle 4 awhile( between 5 min - 30 min ) then juz turn off ! After it turn back on it will idle. I step on gas it turns off ! Has no fuel press ! When i push in the fuel press reliff valve . I replaced fuel filter, fuel pump, fuel pump relays, oilpress/fuel pump senor, icm ,coil ! No codes ! No stored codes ! Thanks 4 the help