UPDATE ECC temp is blinking - ? - Page 4 - 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 11-15-2005, 02:57 PM   #31
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Nick..it might be acutal drives. Little trips and errands.

I hope I hear an SSEi in Nicks future.
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Old 11-15-2005, 03:15 PM   #32
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93 was the last year that user diagnostics could be performed on the ECC. All later years have to be scanned by a Tech 2.

My 93 SSEi throws a code once a year for long-term freon loss, but actually doesn't have a problem. I simply clear it (like you can't), and go for another year.

My 95 is a different story. My airmix actuator is bad (it'* currently disconnect and a manual adjust handle is rednecked in). It flashes because of this, but works fine in other modes.

The point being that you could have a non-problem or a minor problem that you just haven't noticed yet. It monitors many functions. It could even be the solar radiation sensor or interior temp sensor gone haywire.
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Old 11-15-2005, 04:16 PM   #33
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Quote:
Originally Posted by Echo SSEI
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? :(
I don't think so, someone has to keep the 40th running even though it is clear across the country......
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Old 11-15-2005, 04:21 PM   #34
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Quote:
Originally Posted by BillBoost37
Nick..it might be acutal drives. Little trips and errands.

I hope I hear an SSEi in Nicks future.
thanks for the tip..

getting an SSEi - I am still looking for one. I am considering selling my Diesel truck and getting a newer SSEi Bonn. What is the last year they made them?
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Old 11-15-2005, 04:23 PM   #35
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Quote:
Originally Posted by willwren
93 was the last year that user diagnostics could be performed on the ECC. All later years have to be scanned by a Tech 2.

My 93 SSEi throws a code once a year for long-term freon loss, but actually doesn't have a problem. I simply clear it (like you can't), and go for another year.

My 95 is a different story. My airmix actuator is bad (it'* currently disconnect and a manual adjust handle is rednecked in). It flashes because of this, but works fine in other modes.

The point being that you could have a non-problem or a minor problem that you just haven't noticed yet. It monitors many functions. It could even be the solar radiation sensor or interior temp sensor gone haywire.
thank you, if the above actions do not correct the problem I will look into going to the dealer.....
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Old 11-16-2005, 09:15 PM   #36
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UPDATED 11-16-05


I left it powerless for 2 days - same problem Blinking still exists

I next cycled the ignition to ON then OFF, powering the accessories without starting the motor, 60 times, checked once again, same problem Blinking still exists

I next cycled the ignition to ON Starting the motor, and powering the accessories then OFF, 60 times, checked once again, same problem Blinking still exists

I then checked the outside temp probe once again while the motor was running, I moved the wire around, gently forced the connection from wire to probe. I went back into the running car to see if it was still blinking, checked once again, problem disappeared.

Turned the motor off and restart once again, same problem Blinking still exists.
I then checked the outside temp probe once again while the motor was running, I moved the wire around, gently forced the connection from wire to probe. I went back into the running car to see if it was still blinking, checked once again, problem disappeared.

I guess my next thing to do is check to see that the blinking is not going away on its own after a period of time and I am only fooling myself when I go out and fuss with the wire and probe. If it still persists after 3 or 4 minutes I will remove the probe, clean the connections on both the probe and wire, reattach them and test it once again........

Any other Ideas welcomed

Has anyone had a probe go bad on him or her?
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Old 11-16-2005, 09:18 PM   #37
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Quote:
Originally Posted by Bob Dillon
"Bob, it should be going out no later than Wed, I hope that is OK for you?"

After tanking on shipping to you for five days, it sure is.

"time will tell..."

Ayup.
Went out today, look for your packageing.....
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Old 11-17-2005, 08:55 AM   #38
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I've found many items on my 95 had corrosion inside the connections. This prompted me to buy my first tube of dielectric grease. Been using it on every connection since. Been much happier also. Less headaches.

Makes one think that when a mechanic works on a Bonneville the first training they get is how to purchase dielectric grease.
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Old 11-17-2005, 12:50 PM   #39
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Nick, according to the FSM, the blinking indicates the HVAC programmer has detected a fault and has a current or historical code. There are 7 items that will cause the programmer to capture a code and set the ECC display to blink.

1. External temp sensor fault
2. Internal temp sensor fault
3. Solar sensor fault
4. Air mix door fault
5. Heat/AC contol panel fault
6. Loss of "keep alive memory" in HVAC programmer
7. Loss of serial data

Hopefully, the quick fix on the external sensor you tried fixed the fault.

Again, 50 ignition cycles AFTER no fault is detected may be required. It says the ignition needs to be cycled to "ON", so starting the engine should not be required.
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Old 11-17-2005, 01:35 PM   #40
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Quote:
Originally Posted by Echo SSEI
Nick, according to the FSM, the blinking indicates the HVAC programmer has detected a fault and has a current or historical code. There are 7 items that will cause the programmer to capture a code and set the ECC display to blink.

1. External temp sensor fault
2. Internal temp sensor fault
3. Solar sensor fault
4. Air mix door fault
5. Heat/AC contol panel fault
6. Loss of "keep alive memory" in HVAC programmer
7. Loss of serial data

Hopefully, the quick fix on the external sensor you tried fixed the fault.

Again, 50 ignition cycles AFTER no fault is detected may be required. It says the ignition needs to be cycled to "ON", so starting the engine should not be required.
Great info. If your heat/cold comes out the proper vents when selected, and the hot/cold mix works correctly, you can really narrow down that list.

Keep in mind that RAP can mess with you. Cycle the ignition with the door open. (Retained accessory power)
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