whiteboyslo
OBS Enthusiast
Hi folks -
My 1993 Suburban 7.4L has the OEM auxiliary pusher fan installed, and I'm beginning to wonder if it's doing what it's supposed to do. I only hear it run after I get back into the truck after some in-town driving, so your typical stop-n-go stuff that will always have temps creep. I do NOT really hear it otherwise, even though I'm under the impression it should come on whenever I turn on the AC.
So, what are the conditions that are supposed to trigger this thing?
The two "issues" I'm tracking down are AC-related. First is that the AC is not all that cold at idle and around town. This may be a charging issue, but I'm looking at all possibilities. The second is that the engine temps jump more than I'd like with the AC engaged, again only when idleing and around town. Typical for my truck is around 200*, but with the AC on and in town, that will creep up a good 10* or so.
All parts of the cooling system are new, including radiator, fan, clutch, hoses, pump, and thermostat.
Mike
My 1993 Suburban 7.4L has the OEM auxiliary pusher fan installed, and I'm beginning to wonder if it's doing what it's supposed to do. I only hear it run after I get back into the truck after some in-town driving, so your typical stop-n-go stuff that will always have temps creep. I do NOT really hear it otherwise, even though I'm under the impression it should come on whenever I turn on the AC.
So, what are the conditions that are supposed to trigger this thing?
The two "issues" I'm tracking down are AC-related. First is that the AC is not all that cold at idle and around town. This may be a charging issue, but I'm looking at all possibilities. The second is that the engine temps jump more than I'd like with the AC engaged, again only when idleing and around town. Typical for my truck is around 200*, but with the AC on and in town, that will creep up a good 10* or so.
All parts of the cooling system are new, including radiator, fan, clutch, hoses, pump, and thermostat.
Mike