CEL P0128, need advice
#1
Thread Starter
CEL P0128, need advice
Hi guys,
Yes, i did a search but couldn't come up with much help...all i found were posts about what the p0128 code is.
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
As soon as I got a description of the code, I knew what the problem was: my aftermarket Mishimoto thermostat. I recently installed the thermostat with the matching fan switch and aftermarket radiator cap.
the aftermarket thermostat's job is to operate at a lower temp than the stock thermostat, hence the CEL.
My question is what could I do to not get the code anymore (besides putting the stock thermostat back in)?
i currently have the following installed: AEM V2 intake, headers, exhaust, thermostat, fan switch, and radiator cap.
thanks guys!
Yes, i did a search but couldn't come up with much help...all i found were posts about what the p0128 code is.
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
As soon as I got a description of the code, I knew what the problem was: my aftermarket Mishimoto thermostat. I recently installed the thermostat with the matching fan switch and aftermarket radiator cap.
the aftermarket thermostat's job is to operate at a lower temp than the stock thermostat, hence the CEL.
My question is what could I do to not get the code anymore (besides putting the stock thermostat back in)?
i currently have the following installed: AEM V2 intake, headers, exhaust, thermostat, fan switch, and radiator cap.
thanks guys!
#2
If you know what the problem is and you want the code cleared, just bring it to an Autozone. The one near me usually clears them for me...they always tell me they're not supposed to do it but that doesn't always stop them
#3
Did you able to resolve that P0128 CEL issue ?
I have the stock thermostat & sensor & this thing popped up twice already before I reset it again. The Temperature bars in the dashboard has never past 3 bars. Still Could not figure out.. Any pointers are appreciated.. thanks
I have the stock thermostat & sensor & this thing popped up twice already before I reset it again. The Temperature bars in the dashboard has never past 3 bars. Still Could not figure out.. Any pointers are appreciated.. thanks
#4
Registered User
Join Date: Jun 2006
Location: Lexington, Ky
Posts: 2,540
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by gnehc1,Sep 22 2009, 03:23 PM
Hi guys,
Yes, i did a search but couldn't come up with much help...all i found were posts about what the p0128 code is.
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
As soon as I got a description of the code, I knew what the problem was: my aftermarket Mishimoto thermostat. I recently installed the thermostat with the matching fan switch and aftermarket radiator cap.
the aftermarket thermostat's job is to operate at a lower temp than the stock thermostat, hence the CEL.
My question is what could I do to not get the code anymore (besides putting the stock thermostat back in)?
i currently have the following installed: AEM V2 intake, headers, exhaust, thermostat, fan switch, and radiator cap.
thanks guys!
Yes, i did a search but couldn't come up with much help...all i found were posts about what the p0128 code is.
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
As soon as I got a description of the code, I knew what the problem was: my aftermarket Mishimoto thermostat. I recently installed the thermostat with the matching fan switch and aftermarket radiator cap.
the aftermarket thermostat's job is to operate at a lower temp than the stock thermostat, hence the CEL.
My question is what could I do to not get the code anymore (besides putting the stock thermostat back in)?
i currently have the following installed: AEM V2 intake, headers, exhaust, thermostat, fan switch, and radiator cap.
thanks guys!
#5
Registered User
Join Date: Jul 2009
Location: long island
Posts: 527
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by ShocK,Oct 17 2009, 10:10 PM
I have a J's thermostat, my car does the same thing. If you let it warm up full bars the light won't come one I have thought about switching to Spoon as its operating temp is a few degrees higher which might prevent this. Whats the operating temp of the mishimoto??
#6
you can get a radiator cap with less pounds of pressure to increase coolants boiling point. it should get rid of CEL, but yeah it defeats the purpose of the thermostat opening at a cooler temp.
Thread
Thread Starter
Forum
Replies
Last Post