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Re-occuring Check Engine: 1-2-3, ECT, help... 200

posted by  philski on  Tue Mar 23 09:07 CST 2004
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last visit: Thu Jul 24 10:15 CST 2014
[RELATED]

hey...
i replace the ECT sensor with a new dealer one 9 months ago
now i keep getting the check engine light...i think the sensor is
fine...where should i check for bad wiring? where does this ground
to? any suggestions? thanks
~philski
'90 245 DL








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Re-occuring Check Engine: 1-2-3, ECT, help... 200

posted by  jkordzi on  Tue Mar 23 09:54 CST 2004
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last visit: Wed Sep 12 02:43 CST 2001
[RELATED]

Every few months or so, I get the same code show up in my 93 245. I've replaced the ECU as well. It always happens when I've got the cruise set and I've been driving for a while. I can never find the problem and just reset the code. I have a rebuilt 951 ECU and have concluded it's the problem. If you want to go further, I'd recommend you side probe at the ECU to see if the resistances (or voltages) are correct. The Bentley manual has a section that goes over that. If you find the problem, pls let us know.








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Re-occuring Check Engine: 1-2-3, ECT, help... 200

posted by  philski on  Tue Mar 23 10:44 CST 2004
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last visit: Thu Jul 24 10:15 CST 2014
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ah...the ECU...mine is the 561 variety...would the eprom upgrade help this situation? how do you tell if the eprom is original or upgraded?
thanks
~phil








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Re-occuring Check Engine: 1-2-3, ECT, help... 200

posted by  pageda on  Tue Mar 23 11:30 CST 2004
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last visit: Fri Oct 24 13:18 CST 2014
[RELATED]

I believe the engine will not start with a failed 561 ECU. The problem as I understand it is caused by a bad ground in the ECU to the fuel pump relay. Dan
--
85 245 M46 192K, 92 245 A70 119K







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