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I vote for IAC
Posted by Siegfried (more from Siegfried) on Tue, 26 Jul 2011 09:45:53
In Reply to: Intermittent stuttering, Tim, Tue, 26 Jul 2011 08:47:31
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Tim,
Though I haven't met Bosch LH Jetronic in person and I'm running Lucas CU14 EFI instead (greetings from overseas), but I had a similar issues and it was the idle valve to give those troubles. In my case it wasn't worn or clogged, but one plastic part went loose and it sucked some additional air whatever position it was driven to by the ECU.
So try inspecting and checking your IAC valve.
It also can happen if speed signal is missing or intermittent, check your speedometer and wire (#613, green) that goes from speedo to pin #34 of LH ECU: raise the car and having front wheel spinning (even one wheel) you should read 0-12V square signal from this wire (having the ignition turned on, obviously).
Good luck,
Zig
posted by 77.37.1...
Posts in this Thread:
- Intermittent stuttering, Tim, Tue, 26 Jul 2011 08:47:31
- Clean the AIC, AMM, and Throttle body, Robster501
, Tue, 26 Jul 2011 19:58:34 - Re: Intermittent stuttering, Saabnutt, Tue, 26 Jul 2011 11:11:46
- I vote for IAC, Siegfried, Tue, 26 Jul 2011 09:45:53 <-- Viewing This Message
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