TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Nov 14, 2006 | 05:11 PM
  #1  
1989GUNMETALTA's Avatar
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HESITATION

OK WELL I JUST GOT MY CAR BACK AND MY FUEL PUMP RELAY WAS FRIED. I CHANGED MY OIL PRESSURE SWITCH CAUSE IT WASNT SHUTTIN OFF. NOW PRIOR TO AND NOW ,WHEN I DRIVE MY CAR IT HESITATES BIG TIME, IN THE BEGINGING THE CAR IS FINE, BUT AFTER IT WARMS UP IT SEEMS LIKE IT DOESNT WANNA GO. WHEN I HIT THE GAS, IT DOESNT ACCELERATE, IT TAKES A SEC THEN ALL OF A SUDDEN KICKS IN. IT IDLES FINE, AND RUNS FINE, BUT THE TOP END ISNT THERE AND IT HESITATES. LOOKING FOR SOME HELP. PLEASE AND BEFORE U SAY ANYTHING I AM SORRY FOR THE CAPITAL LETTERS, I WEAR GLASSES AND IT IS EASIER TO SEE, SORRY.... THANKYOU FOR YOUR HELP AND TIME....
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Old Nov 14, 2006 | 05:21 PM
  #2  
3.8TransAM's Avatar
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From: Schererville , IN
Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
Get thicker glasses :-)

I wear them to and can get along just fine lol

Anyhow.

Any codes?

Have you checked for the basics?

Kinda hard to help you out with vague descriptions.

U could be looking at anything from bad grounds to bad injectors or TPS or anything in between.

U need to start verifying things.

later
Jeremy
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Old Nov 17, 2006 | 12:15 AM
  #3  
Lucid's Avatar
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From: San Antonio, Tx
Car: 86 Camaro Z28/ 87 Camaro IROC Z28
Engine: 5.0L TPI LB9 / 5.0 TPI LB9 w/cam
Transmission: Built 700R4 with Transgo shift kit
Axle/Gears: 3.27 9 bolt Posi/ 2.73 10 bolt Posi
You should pull a couple spark plugs and look at them, and check your plug wires and make sure you dont have any burn marks or breaks.
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Old Nov 19, 2006 | 06:38 PM
  #4  
1989GUNMETALTA's Avatar
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THANKYOU FOR ALL UR HELP. IT WAS MY MAF.
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