High speed fan relay

[blownwhite-sn95]

My fan will not switch to high speed mode automatically even though my chip is programmed to, so i made a manual switch that grounds it from the EEC. Now my car runs around 150 because of my fluidyne radiator.

How can I fix this problem?

 

[blownwhite-sn95]

I found this diagram on the 94-95 FAQ sheet but I do not know where to find the high speed relay in the engine bay.

Please Help

 

[HISSIN50]

Um, turn the switch off?

You cant really run that much cooler than your stat rating - the stat is self regulating. Now the temp sender location can see cooler temps than the t-stat does, and the motor can be filled will cooler (than the stat rated) coolant once the stat opens. But once that cold coolant reaches the stat again, the stat slams shut.

good luck.

 

[HISSIN50]

Wait, what did you ground if you dont know where the high speed relay is? FWIW, the high speed relay is contained in the CCRM. WHen you ground pin 17 on the CCRM, you are energizing the high speed relay (it uses a switched ground on the control side).

The schematic you posted really is if you want to bypass the CCRM. If you want to do away with this and run the best set-up out there, check out Baskin's delta controllers ( www.DcControl.com ).

Good luck.

 

[blownwhite-sn95]

Wait, what did you ground if you dont know where the high speed relay is? FWIW, the high speed relay is contained in the CCRM. WHen you ground pin 17 on the CCRM, you are energizing the high speed relay (it uses a switched ground on the control side).

The schematic you posted really is if you want to bypass the CCRM. If you want to do away with this and run the best set-up out there, check out Baskin's delta controllers ( www.DcControl.com ).

Good luck.

Thank you for you input. I just want to get my high speed fan to come on automatically again. It stopped out of nowhere, so i hooked up the switch and wired it directly to a wire from my EEC harness inside the car. The car does not function properly if the switch is on all the time because it is running on cold mode. The gauge stays barely above the min temp line and below N. I don't like the idea of turning the switch on and off all day to keep the temperature at the right level.

Where is the CCRM located? Is there any way that the high speed connection broke on it?

Thank You

 

[HISSIN50]

The manual switch is what can kill the CCRM. The fans were not meant to switch from off to high speed, nor to have low speed and high speed on at the same time.

The CCRM is the black box on the same bracket as your overflow bottle. You probably grabbed the same wire as Pin 17 on the CCRM, but you did it inside the car.

FWIW, the fan will chill the radiator's coolant, but the motor's coolant should still stay hot (if your stat is not stuck open a bit). This is no different than driving with the defroster on in winter (fan comes on) or a mechanical fan that is always turning.

I think you got irritated with my posts (and likely this one too). I did not mean to come off that way - Just trying to figure out what exactly is happening and what exactly was done so the folks in here have as much info as possible, so as to make the best suggestions possible.

Good luck.