C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Shuts off @ WOT ! HELP PLEASE !!

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Old Sep 12, 2011 | 08:37 PM
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Default Shuts off @ WOT ! HELP PLEASE !!

1994 lt1 auto . cruises good ! But when stomped on it turns off !!
Thanks, Robert

Last edited by NASSTY SS; Sep 12, 2011 at 08:40 PM.
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Old Sep 12, 2011 | 08:52 PM
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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.
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Old Sep 12, 2011 | 08:56 PM
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put new opti 7 months ago ! it juz started doing it !put fuel filter & pump 2 day !
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Old Sep 12, 2011 | 09:26 PM
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Originally Posted by NASSTY SS
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.
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Old Sep 12, 2011 | 09:26 PM
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Im stranded out 4 hrs from home ! @ a motel ! please help !! wit sum much needed info !!
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Old Sep 12, 2011 | 09:27 PM
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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.
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Old Sep 12, 2011 | 09:30 PM
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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.
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Old Sep 12, 2011 | 09:33 PM
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Originally Posted by pcolt94
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.

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 !
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Old Sep 12, 2011 | 09:36 PM
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might be bad gas.

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Old Sep 12, 2011 | 09:42 PM
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Originally Posted by derekguzz
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.


it starts ! jus shuts off when i step on it !
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Old Sep 12, 2011 | 09:47 PM
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Originally Posted by derekguzz
might be bad gas.



i had juz put $40 of 91 ! drove it 10 miles ! then started acting like **** !!
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Old Sep 12, 2011 | 09:50 PM
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step on it as in...giving it any gas or literally hammering it?

I would say bad gas, fuel filter and a plug or two came loose or opti wires related...
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Old Sep 12, 2011 | 10:06 PM
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Originally Posted by derekguzz
step on it as in...giving it any gas or literally hammering it?

I would say bad gas, fuel filter and a plug or two came loose or opti wires related...


bout half hammer it !
thanks 4 the help / info
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Old Sep 12, 2011 | 10:13 PM
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If you can baby it to an autostore, use their tools to find out whats going on.
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Old Sep 12, 2011 | 10:16 PM
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i gonna do that in the morning ! thanks
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Old Sep 12, 2011 | 10:58 PM
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A fuel injector may be bad too.

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.

Good Luck.
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Old Sep 13, 2011 | 12:53 AM
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THANKS ,Everyone 4 ur help
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To Shuts off @ WOT ! HELP PLEASE !!

Old Oct 22, 2011 | 03:37 PM
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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
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Old Oct 22, 2011 | 03:56 PM
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after replacing fuel system does car run now.
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Old Oct 22, 2011 | 04:01 PM
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its runs 4 awhile then turn off. I take it out 4 a ride runs good ! Then it turns off !

Last edited by NASSTY SS; Oct 22, 2011 at 04:08 PM.
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