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No start 1990 740 GL repeat. 700 1990

uid 18083's pic
posted by  lucid on  Sat Oct 28 04:39 CST 2006
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

"Fuel injection: Signal missing from cold start valve- Idle valve closed- no signal from speedometer."

Suggest you give the actual code numbers.

I'm guessing you have Regina FI, and "Signal missing from cold start valve" is from a 3-2-1 code. If so, it's from a 1990 TSB for improving Cold Starts (Group 23, TSB# 135), which causes a permanent 3-2-1 code to be set and can be ignored.

The book lists two Idle Valve codes. Neither one is defined as "Idle valve closed", but one can cause a no-start (it says). Maybe your Idle Valve is not really "working OK" like you think?

Speedo code (3-1-1) may have been set (and retained) from a signal glitch when the car was running, and is probably not relevant to this problem.

OBD codes aside, I'd try OBD Mode 3 to see if the injectors, RS relay, and IAC valve can be "exercised".
--
Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.






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