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Odd idle when AMM unplugged but hesitation solved ?!$*@!~!
Posted by Tomee [Email] (more from Tomee) on Fri, 3 Aug 2001 13:26:59
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I’ve been trying to hunt down a hesitation when blipping throttle at idle. After one year of searching I still haven’t found the cause (replaced AMM 005, no vac leaks, new rotor, plugs etc. etc.). However, my focus has now turned to the LH CPU.
Unlike other posts I’ve read, when I unplug my AMM (LH 2.2) the idle goes haywire. It fluctuates from 200rpm to 1000rpm in 1 second cycles. I’ve heard that when the AMM is unplugged then LH CPU should set car to default mode where mixture is richened but idle should be fairly stable.
The other thing I’ve noticed when I do this is that the hesitation problem completely goes.
Does this suggest LH box problem?
Thanks,
Tomee
1987 900 16vt
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