Wereknight
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What would cause the check engine light to stay on and not be able to clear?
I have an '85 Fiero 2m4 4cyl. 2.5L Car starts just fine, but the check engine light will not go away, flash the codes, or be read by Auto-Zone's reader.
I've tried the following:
1. took car to 2 different parts stores and a mechanic, none of them could get the reader to read the codes
2. Tried using the manual code retrieval method of grounding the pins ALDL port next to the cigar lighter in the center console and switching the key to "on" - no flashing of codes, just stayed on constantly
3. Tried clearing the code memory by:
After each of the attempts to clear the ECM memory I started the car and the check engine light never blinked or anything, just always stays lit.
Could this be caused by a bad ECM? is there a trick or something I'm missing that might otherwise work? Could it be just a bad ALDL?
Thanks in advance for any help you can provide.
~Wereknight
I have an '85 Fiero 2m4 4cyl. 2.5L Car starts just fine, but the check engine light will not go away, flash the codes, or be read by Auto-Zone's reader.
I've tried the following:
1. took car to 2 different parts stores and a mechanic, none of them could get the reader to read the codes
2. Tried using the manual code retrieval method of grounding the pins ALDL port next to the cigar lighter in the center console and switching the key to "on" - no flashing of codes, just stayed on constantly
3. Tried clearing the code memory by:
1) removing ECM fuse for 20 seconds (Chilton Manual reccomended 10 seconds),
2) removing all fuses and leaving them out for 2 min,
3) disconnecting positive battery cable for 5 min,
4) disconnecting both positive and negative battery cables for 30 min, turning the key to start while it was disconnected (to clear any residual system power).
2) removing all fuses and leaving them out for 2 min,
3) disconnecting positive battery cable for 5 min,
4) disconnecting both positive and negative battery cables for 30 min, turning the key to start while it was disconnected (to clear any residual system power).
After each of the attempts to clear the ECM memory I started the car and the check engine light never blinked or anything, just always stays lit.
Could this be caused by a bad ECM? is there a trick or something I'm missing that might otherwise work? Could it be just a bad ALDL?
Thanks in advance for any help you can provide.
~Wereknight
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