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TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.

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Old 04-08-2009, 07:31 PM   #1
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Join Date: Mar 2009
Location: Middle Tennessee
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Car: 1937 Chevy
Engine: 5.0 TPI
Transmission: 700R4

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Sender Values..????

I borrowed a scanner for my 1992 305cu TPI.This is a complete rebuild.Running stock cam and heads. I am running speed density.No MAS. I have written down sender values open loop and closed loop that I scanned today. My problem is hard starting and when it starts it runs really rich. Is there a list of values for the sensors? Need O2(mV) , IAC Position, Learned IAC, MAP (kPa), MAP(V),Coolant(C*), MAT(C*),and anything you think will be helpful.

Last edited by FlamedChevy; 04-08-2009 at 07:41 PM.
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Old 08-12-2009, 06:09 PM   #2
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Car: 1995 K1500 Yukon 2-Dr and 1982 Z-28
Engine: truck: 350hp 454 car: 485hp 355
Transmission: truck:5spd car: Doug Nash 5spd
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Re: Sender Values..????

hows all that working out? did you ever check your temperature sensor? earlier models had one for the guage and one for the efi.
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Old 08-12-2009, 08:01 PM   #3
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Re: Sender Values..????

The sender for the ECM is ok. I had a fuel problem. Fuel pressure was to low. Fixed it. Low fuel pressure will cause all kinds of ugly things to happen. Car in almost ready to go on the road. Thanks
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Old 08-12-2009, 08:01 PM
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