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740 Cold Start Problems -- Check for 3-2-1 OBD code 700 1990

posted by  lucid on  Tue Nov 7 01:57 CST 2006
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

Read out the OBD codes (See the 700/900 FAQ for procedure).

Post back with any codes you get. But specifically, look for a 3-2-1.
If you get a 3-2-1 that comes right back after clearing the codes again, that's a sign that a 1990 COLD Starting TSB has been installed.

NOTE: When codes have been cleared, turn the key off, then on again to see if the 3-2-1 stays cleared or comes back.

If you don't get the 3-2-1 in the first place, that means the TSB has NOT been installed, and I can give you more info on it when you post back.
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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