UPDATE ECC temp is blinking - ? - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-14-2005, 10:28 AM   #21
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Quote:
Originally Posted by jrw1234
I would double check all your connections. It sounds like you have a loose connection somewhere. Have you check the connection to the ambient temperature sensor for the ECC? I would disconnect your battery and let it set a half and hour and reconnect it to see if the problem resolves itself. But, make sure you double check all your connections while the battery is disconnected.
I will try this tonight......
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Old 11-14-2005, 12:01 PM   #22
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Someone had that problem...and either a 1/2 hour of battery off or a couple days corrected it.

Sounds like you are back together Nick..great job!!!
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Old 11-14-2005, 11:01 PM   #23
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Quote:
Originally Posted by BillBoost37
Someone had that problem...and either a 1/2 hour of battery off or a couple days corrected it.

Sounds like you are back together Nick..great job!!!
Well I tried the 1/2 hour of battery off and it still blinks, I guess I will try the 2 day off and see what happeneds...

Any other Ideas?
Anyone with a 97FSM that can check if this problem means anything?
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Old 11-15-2005, 12:03 PM   #24
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I changed the title of the thread because I didn't want to start another thread with the same issue.......

ECC temp is still blinking , anyone had this problem and found a cure for it?
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Old 11-15-2005, 01:34 PM   #25
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Nick, mine blinks too, but works fine...I am sure that the ECC temp blinking is a tool to tell a technician the ECC has recorded a problem and has a code...I am also pretty sure that the only way to remove the code and stop the blinking is by taking it to a dealer or you have to have a tech I or tech II scanner. But, operation of the system should be ok...are you having any problems or is the blinking just driving you nuts?

I'll double-check the FSM for ya.
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Old 11-15-2005, 01:45 PM   #26
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Randy said it well

Quote:
Originally Posted by randman1
If the temp display is blinking, there is an error in the monitored parts of the ECC. The blower motor itself is not a monitored part of the system but the Blower Control Module output is. There is a feedback wire coming off of the BCM output that tells the HVAC programmer that BCM is giving the correct amount of voltage to the blower motor.

It'* a little difficult to verify if it is intermittent though. If it is happening with any regularity, you can check the BCM output with a volt meter when it is acting up. You can also have the codes read at the dealer to tell you exactly what the problem is.
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Old 11-15-2005, 02:04 PM   #27
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Just happened to have the FSMs in the trunk today

HVAC programmer contains self-diagnostics. When a fault is detected, the dispaly panel will flash indicating a diagnostic trouble code (specific to the HVAC programmer) has been stored. These codes can be read and cleared onll with more sophisticated scanners than you or I have, Nick.

But there is some good news...

If you don't want to take it to a dealer or you don't have access to a scanner that is capable or reading and clearing the HVAC codes, then...

Any codes in the HVAC programmer memory are cleared AFTER 50 drive cycles without a reoccurance of the code.
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Old 11-15-2005, 02:10 PM   #28
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Quote:
Originally Posted by Echo SSEI
Nick, mine blinks too, but works fine...I am sure that the ECC temp blinking is a tool to tell a technician the ECC has recorded a problem and has a code...I am also pretty sure that the only way to remove the code and stop the blinking is by taking it to a dealer or you have to have a tech I or tech II scanner. But, operation of the system should be ok...are you having any problems or is the blinking just driving you nuts?

I'll double-check the FSM for ya.
Thanks for the quick reply back.....

Problems, none with the AC, the blinking is driving me nuts because I am not aware of any problems or past history of any here on this foum....
Thanks for checking with your FSM when you get a chance and getting back to me.

I need to get everything worked out in the car, I need to drive the car to Orlando Fl in late Jan or early Feb. My daughter lives in Florida, is pregnant and has not had a car for the last 12yrs. She is 31 and has never had the funds or credit to get one. She needs a dependable car for her and the baby and instead of looking for a used car for her, my wife (stepmom) and I deided to give her the 40th. It has been a great car and very dependable and knowing she has it to drive she can be safe and I can not worry too much.
I hope the father of the baby and her get married but you never know.
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Old 11-15-2005, 02:12 PM   #29
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Quote:
Originally Posted by Echo SSEI
Just happened to have the FSMs in the trunk today

HVAC programmer contains self-diagnostics. When a fault is detected, the dispaly panel will flash indicating a diagnostic trouble code (specific to the HVAC programmer) has been stored. These codes can be read and cleared onlly with more sofisticated scanners than you or I have, Nick.

But there is some good news...

If you don't want to take it to a dealer or you don't have access to a scanner that is capable or reading and clearing the HVAC codes, then...

Any codes in the HVAC programmer memory are cleared AFTER 50 drive cycles without a reoccurance of the code.
thanks again, does that mean after 50 times the car is started and turned off?
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Old 11-15-2005, 02:17 PM   #30
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Quote:
Originally Posted by nick *
Quote:
Originally Posted by Echo SSEI
Just happened to have the FSMs in the trunk today

HVAC programmer contains self-diagnostics. When a fault is detected, the dispaly panel will flash indicating a diagnostic trouble code (specific to the HVAC programmer) has been stored. These codes can be read and cleared onlly with more sofisticated scanners than you or I have, Nick.

But there is some good news...

If you don't want to take it to a dealer or you don't have access to a scanner that is capable or reading and clearing the HVAC codes, then...

Any codes in the HVAC programmer memory are cleared AFTER 50 drive cycles without a reoccurance of the code.
thanks again, does that mean after 50 times the car is started and turned off?
A drive cycle occurs when the ignition is turned "on"....I doubt you have any problems and the code is stored from the temp sensor you fixed the other day/week when you had the A/C problem...so, 30-40+ more "starts" and your blinking SHOULD stop...

Hopefully, the 40th will serve your daughter well...does this mean we will lose you from our little club? :(
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