LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

View my Datamaster file

Old Dec 1, 2008 | 02:39 PM
  #31  
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Well I guess that could help me not wait as long but if they still don't work I'm kind of back to where I am now...
Old Dec 1, 2008 | 02:47 PM
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The TunerCat suggestion was ment for once you get the fans working properly, not to solve your problem. IMHO, the stock fan's setting are too high.
Old Dec 1, 2008 | 03:16 PM
  #33  
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o ok. Appreciate the advice.
Old Dec 1, 2008 | 05:56 PM
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It didn't command either of the relays to come on until you turned the a/c on. Peak temp was 226 according to the log.

I think you're just freaking out over the stock fan programming really. However with cool ambient air temps I dont know that I ever had the fans come on when i was stock. Perhaps you should wait until the car is cool and check the fluid level in the radiator and the overflow tank. Then crawl under the front and be sure nothing is blocking the radiator.

If it bugs you that much set the fans to come on sooner in the pcm just to verify that they will in fact work and you dont risk overheating your engine. If you want to set them cooler permanently just toss a 160 or 180 degree thermostat in it. There is also the remote possibility that your thermostat has experienced some sort of mild failure and is not opening all the way, or at the right temp.

Also keep in mind thermostat ratings are where they first begin to open and are not fully open until about 15 degrees higher than that.
Old Dec 1, 2008 | 06:06 PM
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The stock thermostat is a 180 unit. The 'upgrade' is a 160.
Old Dec 1, 2008 | 06:33 PM
  #36  
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Originally Posted by WS6T3RROR
It didn't command either of the relays to come on until you turned the a/c on. Peak temp was 226 according to the log.

I think you're just freaking out over the stock fan programming really. However with cool ambient air temps I dont know that I ever had the fans come on when i was stock. Perhaps you should wait until the car is cool and check the fluid level in the radiator and the overflow tank. Then crawl under the front and be sure nothing is blocking the radiator.

If it bugs you that much set the fans to come on sooner in the pcm just to verify that they will in fact work and you dont risk overheating your engine. If you want to set them cooler permanently just toss a 160 or 180 degree thermostat in it. There is also the remote possibility that your thermostat has experienced some sort of mild failure and is not opening all the way, or at the right temp.

Also keep in mind thermostat ratings are where they first begin to open and are not fully open until about 15 degrees higher than that.
In my OP I posted a link to my original thread where I was driving down the street and my check gauges light came on and my engine was overheating and coolant was coming out of my emergency reservoir, so I'm not just freaking out, it did overheat. That's what led to all this stuff...
Old Dec 1, 2008 | 07:52 PM
  #37  
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Ok well I have a zipped .LT1 file and can't read it so I posted it up on my site. Anyone make sense of it?
Old Dec 1, 2008 | 08:10 PM
  #38  
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Originally Posted by cblinkdude182
Ok well I have a zipped .LT1 file and can't read it so I posted it up on my site. Anyone make sense of it?
Is it an LT1 Edit file? A copy of your PCM file?
Old Dec 1, 2008 | 08:52 PM
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Name:  tuneandlog.jpg
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Directly after this point the ac request lights up and the fan comes on because you put the air on. As you can see the fan does not kick on until very high temp due to programming.

If it pukes coolant out of the tank alot of times its the radiator cap failing unless its actually boiling over which you may be.

Not really sure what other advice to give between your old thread and this one.
Old Dec 1, 2008 | 09:22 PM
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Originally Posted by Stl94LT1
Is it an LT1 Edit file? A copy of your PCM file?
LT1 edit file
Old Dec 1, 2008 | 09:23 PM
  #41  
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Originally Posted by WS6T3RROR


Directly after this point the ac request lights up and the fan comes on because you put the air on. As you can see the fan does not kick on until very high temp due to programming.

If it pukes coolant out of the tank alot of times its the radiator cap failing unless its actually boiling over which you may be.

Not really sure what other advice to give between your old thread and this one.
Well if it's boiling over, what can I do?
Old Dec 2, 2008 | 10:28 AM
  #42  
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Basically what I'm saying is when I'm at a complete stop for an extended period of time whether that be a long stop light or slow drive thru, I can't have my car bubbling coolant all over the ground and what not. Can anyone offer some insight into what I can do to troubleshoot this further?
Old Dec 9, 2008 | 10:35 AM
  #43  
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Ok I guess not... I'm gonna just go out on a limb and say that the gauge is off because on datamaster it shows that my temperature is 208 or so and my gauge is showing nearly in the red which is closer to like 240 or something, so maybe I need to replace my Temperature Gauge in the Driver's side head?
Old Dec 9, 2008 | 06:21 PM
  #44  
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Originally Posted by WS6T3RROR
[IMG]
If it pukes coolant out of the tank alot of times its the radiator cap failing unless its actually boiling over which you may be.

Not really sure what other advice to give between your old thread and this one.
Originally Posted by cblinkdude182
Well if it's boiling over, what can I do?
Did you check your radiator cap, to make sure it can hold the factory rated 18psi? If it can't hold the pressure, it lowers the temperature at which the coolant starts to boil.
Old Dec 9, 2008 | 08:26 PM
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How do I check that?

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