bizzare coolant readings from 2 sources
Thread Starter
Instructor
Joined: Jul 2003
Posts: 111
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From: Lubbock TX
bizzare coolant readings from 2 sources
I have a Heavily modified 85 corvette supercharged custom 4 core radiator and a gen 7 ecm. i have the fans come on at 180 and acording to the gen 7 that is the temp when the fans come on but the car factory gauge reads 210 whats the deal.
also i have the oposite problem that most of you have my temp drops in stopped traffic but goes up while driving even light cruzing not overheating but to 220. When i stop at alight for more than a couple of minutes it dropes to 190 that is on the factory gauge of course have not seen what the readings are fo the gen 7 yet. I find it strange that the temp rises as i drive normal. O2 numbers look good car is running al little rich on purpose so that in not the cause of the heat.
also i have the oposite problem that most of you have my temp drops in stopped traffic but goes up while driving even light cruzing not overheating but to 220. When i stop at alight for more than a couple of minutes it dropes to 190 that is on the factory gauge of course have not seen what the readings are fo the gen 7 yet. I find it strange that the temp rises as i drive normal. O2 numbers look good car is running al little rich on purpose so that in not the cause of the heat.
Thread Starter
Instructor
Joined: Jul 2003
Posts: 111
Likes: 0
From: Lubbock TX
I would like to make them both agree any suggestions i know it it two different sensors but why such the diffence is it location on is on the head the other in the manifold it like a 24 degree diffence and i dont want to dirive around with a laptop all the time.
Melting Slicks
Joined: Jun 2002
Posts: 2,151
Likes: 239
From: Northern VA
I am running a gen 7 set up too. I have found that there is a pretty good variation between what I am seeing on the DFI screen vs. the guage. I would say your aux fan (does an 85 have one?) is coming on when your at a stop but it shouldn't come on until upwards of 220+* unless that sensor was replaced. Curious, what type of temp swings do you see in normal driving? I'm all 
on this one..bump!!
on this one..bump!!
Thread Starter
Instructor
Joined: Jul 2003
Posts: 111
Likes: 0
From: Lubbock TX
fans is on all the time so not a factor when stopped it goes to 180 from 220 while driving and real quick when im idleing not sure why how big of a difference are you seeing and which one is more accurate the gen7 or the guage.
