computer bypassed, need to find away around a switch.
11-06-2013, 05:49 PM
#1
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Car: 1991 camaro RS
Transmission: carb, 350
computer bypassed, need to find away around a switch.
ok so my camaro was swapped from a 305 fuel injected, to a 350 carb, ( before i got the car) for this setup to work the computer was bypassed. a switch was added to the car for the fan, when the car hits around 220, i turn the switch on to cool it off or it will over heat. the switch is kind of anoying because i forget to turn if off sometimes and it could kill the battery. any ideas on what i can do to get around this ?
11-07-2013, 02:10 PM
#3
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
If what you're worried about is running the battery down, you could put a relay into the fan power circuit that is turned on by switched power.
11-07-2013, 02:37 PM
#4
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Car: 1988 Pontiac Firebird
Engine: 305 LT1 intake&heads
Transmission: TH700r4
Axle/Gears: 3.73 10bolt GM
Re: computer bypassed, need to find away around a switch.
use a relay controled by ground given by radiator fan switch part no. D1852B (ac delco), normally used in TPI/TBI engines, it is located on right cylinder head
best regards
best regards
11-07-2013, 02:53 PM
#5
Re: computer bypassed, need to find away around a switch.
Tom,
My car runs a carbed 350 (gmperformance 385 fastburn), only cooling fan I have is a mechanical flex fan, very similar to this: http://www.summitracing.com/parts/fl...make/chevrolet
I never have overheating problems unless I'm sitting in traffic on really hot days.
My car runs a carbed 350 (gmperformance 385 fastburn), only cooling fan I have is a mechanical flex fan, very similar to this: http://www.summitracing.com/parts/fl...make/chevrolet
I never have overheating problems unless I'm sitting in traffic on really hot days.
11-07-2013, 03:02 PM
#7
Re: computer bypassed, need to find away around a switch.
Flex fan is a downgrade, even if it works for you. Easy enough to make your own setup with the factory relay and temp sensor switch. Pins 30,85,86,and 87 refer to the numbered pins on the relay.
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11-23-2013, 07:07 AM
#8
Re: computer bypassed, need to find away around a switch.
I'm wiring up my cooling fan right now using the original cooling fan relay. I can get the fan to work with 12 volts from the battery but when i wire up the relay, it just clicks and no fan. The relay only has letters, no numbers. Here is what I have from the relay connector; black/red to fan, red to battery, brown/white to ign, green/white to switch. Does this sound right?
12-01-2013, 05:56 AM
#9
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: computer bypassed, need to find away around a switch.
http://92b4crs.tripod.com/86wiring/dia-pics/31-4.jpg
Is the red wire hot at all times?
Is there power out of the relay on the red / blk ?
Is the red wire hot at all times?
Is there power out of the relay on the red / blk ?
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