i just swaped out my v6 for a v8,will my computer work with the v8 tempeture sender?i got a jet fan switch and my temp guage doesent say anything then it shoots all the way up past 260,and the fan still dont come on.can i get a relay or something to turn my fan on and just bypass the computer?

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petethedestroyer

 

What car? What system? Have you changed the EPROM inside the ECM?

 

its an 88rs with a carburated 305 i unhooked most of the computer stuff and just kept the basic wires,altenater,oil pressure,distributer,temp.i was wondering if i unhooked a relay or something.

 

Sounds like you need a new chip. Gimme $50!

Ok seriously, there is a difference in the V6 and V8 chips. #1 difference is the setting where you enter the number of cylinders. Then the list goes on from there. I believe if you were to get a 90 305 TBI chip, things may work out better for you. Did you change radiators? Also do you have both the temp sending unit and the fan turn on switch in each of their respective cylinder heads?

Are you getting any codes?


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-Brad C?
355ci '89 Iroc-Z Red, T-tops, power everything, A4,New 10 bolt w/ 3.73's
Trans-Go shift kit Corvette Servo,Accel 8.8mm wires,Flowmaster 80 series ,K&N's, !MAF Screens, Hollowed out airboxes,homemade Subframes. Kieth Black pistons 10.3:1, Comp Cams 270H (.495/.502 218*/224* 110*LSA) & valve springs, SLP 1 3/4" headers, TCI 2400 stall, Dual Roller timing chain, 2 3/4" I-pipe.
Full street trim best run:14.799/mph:93/60': 2.02 (last year) New Times to come.
New times: 13.732 @ 99.30 on a 1.878 60'
Pics of the Iroc

 

i didnt Know the temp sender and the fan switch were in diferent places.i guess the fan switch is passenger sd and the temp sender is driver sd right?

 

Im not sure about your car but in mine the computer has nothing to do with my fan turning on. Since hes runnin a carb unless it's a camputer controled one he doesnt even need a ecm. I think the fanswich is on the drivers side of the engine. Find that and trace the wire to were is goes or doesnt go to salve your problem.

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http://bitchincamaro.no-ip.com 91 RS Camaro 5-speed black w/t-tops 305 TPI
MODS: SLP cold air intake w/K&N, air foil,Accel 19 LB injectors, March aluminum under drive pullies, Alburn pro posi, Aluminum drive shaft, Random Technology 3'' cat-back, 8.5mm MSD wires, 160 thermo, jet fan swich, Custom chip with 91 vette computer, SSBC slotted rotors, optima battery in the rear, BMR adjustable lower control arms and panhard rod, Kenny Brown strut tower brace, TB bypass, no egr, no air

 

If it comes down to it you can hook up a relay to supply power for the fan and power it off the ignition so it runs the fan all the time...at least you'll be able to drive it.

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TheGreatJ
1991 Camaro RS "Suzanne"
http://thegreatj.cz28.com