TPI problems
12-05-2005, 10:39 PM
#1
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Car: Bitchin' 92 RS
Engine: 350 TPI
Transmission: 700R4
TPI problems
I just put a '90 L98 out of a Ircoc Zinto my 92 RS, We've got it to start, but it won't rev, it just bogs and falls on its face, any one got an idea?
12-06-2005, 10:28 AM
#3
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Axle/Gears: '01 3.42 10 bolt
did you change the fuel pump? the rs' had tbi units and the l98's had tpi's. i thought the fuel pumps were different because of the different pressures. tpi operates between 39 and 45 psi. tbi units operate around 14 or 15 i think.
12-06-2005, 11:00 AM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
I would check fuel pressure like they said first.
Than check for all power and grounds at ecm and engine block.
later
Jeremy
Than check for all power and grounds at ecm and engine block.
later
Jeremy
12-06-2005, 01:43 PM
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Car: Bitchin' 92 RS
Engine: 350 TPI
Transmission: 700R4
everything has been checked and rechecked, the fuel pump is a brand new tpi fuel pump for the year modle car the engine wiring harness and ecm came from. we even went as far as changeing the ecm with a brand new one. same ol ka ka.
12-06-2005, 02:22 PM
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sorry to but in...but I may have that issue with the fuel pump.
I took a fuel pump out of an RS and put it in my 91Z. Was that a bad idea? Are they diff? Mines doing the same thing.
I took a fuel pump out of an RS and put it in my 91Z. Was that a bad idea? Are they diff? Mines doing the same thing.
12-06-2005, 02:30 PM
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Axle/Gears: '01 3.42 10 bolt
yes. if the z has the tpi and the rs has the tbi, then the fuel pumps are different. you need one for the tpi to run the tpi unit. they operate at different pressures.
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Oh man.
12-06-2005, 04:54 PM
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Car: 89 FORMULA FIREBIRD, 86 CHEVY CAMARO
Engine: L98, LB9 RESPECTIVLY
Transmission: 700 R4 (BOTH)
When you swapped in the tpi pump did you also replace the rubber coupling hose with a piece of high pressure line?
That little rubber coupling was designed for the lower pressure tbi pump, it won't last too long with a tpi pump.
That little rubber coupling was designed for the lower pressure tbi pump, it won't last too long with a tpi pump.
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