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Go Back   Corvette Action Center > 1984 - 1996 Corvettes > C4 Technical and Performance


C4 Technical and Performance For technical and performance related discussion of 1984 - 1996 Corvettes.

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Old 03-12-02, 08:39 PM   #1 (permalink)
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Default 84 still runs like poohay

Yeah, I need to spend my money on an exhaust when my car cant beat a rustang. Heres the story....new EGR, recently tuned, no check engine light (was recently replaced as well), and stock ignition.

I hit the gas quick and hard and it sometimes goes *pup* and dies. I am in P and tap the gas hard...*pup*pup*, dies. I hit the gas sweetly, then hard, it gets to about 3000-3500 rpm, sputters and slows WAY down.

It almost seems as though it is getting starved of fuel. It is a stock and original fuel pump and I know people have said to UG to a 85+. I dont know. Any Ideas??
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Old 03-12-02, 08:43 PM   #2 (permalink)
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....and please dont say its the tranny.

Well I guess you can if it is............just sugar-coat it.
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Old 03-12-02, 09:01 PM   #3 (permalink)
Motor head!!!!
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Default No not tranny

Could be the timing, or cap & rotor, or coil or a combo of the above.

Time to get out the timing light....

When did you change the fuel filter?

And I think you will have to pull the fuel pump
( inspect pick up sock )

How many miles?


Mike
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Old 03-12-02, 09:09 PM   #4 (permalink)
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No timing light..about 6 months ago...Pick up sock and 89,000

Cap, rotor and coil huh...I was going to install an Accel setup for that anyways.
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Old 03-12-02, 09:15 PM   #5 (permalink)
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Default Duhhh! I should look before clicking!

Ok the pickup sock through deduction and reading the thread correctly is in the tank.. another question. If I was to install a hypertech in-line pump w/o yanking the oem pump. What would that do?
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Old 03-12-02, 09:23 PM   #6 (permalink)
Motor head!!!!
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1988 Convert/1973 coupe 4 speed/1964 Vert!
Default Duhhhhhh ( part Deux )

IF you sock is plugged you need to fix that BEFORE you add another pump!

And if you want more fuel flow you can get a bigger pump ( 86 & up) but the engine ( stock) can't use what it's got for stock anyway.


Mike


LOL!
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Old 03-12-02, 10:08 PM   #7 (permalink)
Motor head!!!!
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Default Well Len that's a good theory

However I have seen a LOT which cake up with debris( rust, scale,taco bell hot sauce wrappers) and get sucked into the pump entrance sufficating the intake.

Still trying to figgure out the hot sauce wrapper one to this day.


Mike
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Old 03-13-02, 12:44 AM   #8 (permalink)
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Default OMG!

My luck I do have a hot sauce wrapper in my tank. Unfortunatley I will have to check it tomorrow sometime.

Awww! Make that Thursday.

Thanks for the input McYall!
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Old 03-13-02, 07:59 AM   #9 (permalink)
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Were you having this problem prior to having the work you listed done?

Carlo
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Old 03-13-02, 11:14 AM   #10 (permalink)
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This all happened after it was "tuned" up and had a new knock sensor and plugs and then was smogged
So about two months
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Old 03-13-02, 11:36 AM   #11 (permalink)
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Just a thought, but a bad EGR can wreak havoc and look like a thousand other items. Possibly the replacement was not done properly? In addition,it would be no surprise if a faulty EGR does not pull a code.
Just a thought
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Old 03-13-02, 12:31 PM   #12 (permalink)
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Default Well hell

I did replace what seemed to be a decent EGR about two weeks ago. I dont think I screwed it up because it is a rather simple install. (four years ago I rebuilt an engine from bare block under Coors/Shlitz induced inebreation and it still runs

I was told that it might be the solenoid
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Old 03-13-02, 01:44 PM   #13 (permalink)
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Didn't know you did the work yourself. I'll take a look tonight at the TBI diagnostic and see what they have for the symptom.
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Old 03-13-02, 02:42 PM   #14 (permalink)
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Default Danke!

:s
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Old 03-13-02, 06:33 PM   #15 (permalink)
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No easy answers in the manual. Fuel,EGR,leak at manifold. Take your pick. If you need diagnostic guide shoot me an e-mail. This is from my 82 TBI but should be quite similar. You may want to check.
Good Luck
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