Cooling problem
Thread Starter
Teching In
Joined: Dec 2013
Posts: 19
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From: Lone Jack, MO
Cooling problem Today my car (2002 ws6 Trans Am) popped the code P0128. At first, there seemed to be no issue, but I've noticed my stat has dropped several degrees. It normally runs at 205 and stays there, even when it's cold out. Today is a fairly nice day here in Missouri, nearly 50 degrees. I'm just wondering why my car threw this code and why the temp is dropping. Thanks!
I had the same code when I first got my car years ago. The previous owner put a cooler thermostat and didn't adjust the computer for it. I replaced it with a stock one and the issue went away and has never came back.
Since your car just started this, I bet its a fail-safe thermostat and has failed, and needs replaced.
Since your car just started this, I bet its a fail-safe thermostat and has failed, and needs replaced.
Thread Starter
Teching In
Joined: Dec 2013
Posts: 19
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From: Lone Jack, MO
JB is right, it said something along those lines. I continued to drive the car because it never dropped too low, it only dropped a total of maybe 20 or 30 degrees, still driveable. But as I was driving, the engine light turned off and the stat went back up to normal. Scanned it, and no codes were shown.
I read somewhere else on here that this code often randomly pops up for no reason and will cause your stat to stop working, which might have been why it seemed to be dropping. As far as I know, there was never a problem in the first place. I couldn't seem to find one, anyway. Took it to the drag strip today and had no problems all day. Ran flawlessly. So Idk
I read somewhere else on here that this code often randomly pops up for no reason and will cause your stat to stop working, which might have been why it seemed to be dropping. As far as I know, there was never a problem in the first place. I couldn't seem to find one, anyway. Took it to the drag strip today and had no problems all day. Ran flawlessly. So Idk
JB is right, it said something along those lines. I continued to drive the car because it never dropped too low, it only dropped a total of maybe 20 or 30 degrees, still driveable. But as I was driving, the engine light turned off and the stat went back up to normal. Scanned it, and no codes were shown.
I read somewhere else on here that this code often randomly pops up for no reason and will cause your stat to stop working, which might have been why it seemed to be dropping. As far as I know, there was never a problem in the first place. I couldn't seem to find one, anyway. Took it to the drag strip today and had no problems all day. Ran flawlessly. So Idk
I read somewhere else on here that this code often randomly pops up for no reason and will cause your stat to stop working, which might have been why it seemed to be dropping. As far as I know, there was never a problem in the first place. I couldn't seem to find one, anyway. Took it to the drag strip today and had no problems all day. Ran flawlessly. So Idk
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Thread Starter
Teching In
Joined: Dec 2013
Posts: 19
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From: Lone Jack, MO
That's about what the temperature was when mine popped up. I'm not too worried about it after finding some more posts about it on here, sounds like it's just kind of a flaw in the computer more than anything rather than an actual problem with the cooling of the engine.
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Verdad Gallardo When you guys say "stat".....are you guys referring to the Thermostat.....?
Or the temp gauge?
When you say things like
.....but I've noticed my stat has dropped several degrees.
And
.....randomly pops up for no reason and will cause your stat to stop working
.
Or the temp gauge?
When you say things like
.....but I've noticed my stat has dropped several degrees.
And
.....randomly pops up for no reason and will cause your stat to stop working
.