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Analysis
Posted by Ken Fisher [Email] (more from Ken Fisher) on Fri, 23 Jul 2010 00:05:14
In Reply to: bypass valve stuck open when engine heats up, Ken Fisher, Thu, 22 Jul 2010 23:07:06
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The ECU in some scenarios sees a wide open throttle and a manifold pressure that doesn't correlate, then throws a code. In most of these poor driveability cases, the ignition timing isn't getting advanced; so you stick your foot further into the pedal, and nothing changes. The ignition timing must advance as the load on the engine increases. If the bypass valve is not the issue, there must be a severe air leak or failed map sensor.
posted by 76.212.20...
Posts in this Thread:
- 9000cd 2.3 ('92) runs v rough & surges/stalls at idle, Rob , Mon, 19 Jul 2010 17:25:25
- Thanks. Also O2 perhaps? Dodgey Trionic?, Rob , Tue, 20 Jul 2010 18:32:25
- check throttle body, vacuum hoses, Ken Fisher, Tue, 20 Jul 2010 16:34:33
- Re: 9000cd 2.3 ('92) runs v rough & surges/stalls at idle, Senor Don, Tue, 20 Jul 2010 11:47:06
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