Re: Emission Test and two failed codes - Request Help! - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Emission Test and two failed codes - Request Help!
Posted by Dean (more from Dean) on Tue, 25 Jan 2005 18:34:49
In Reply to: Emission Test and two failed codes - Request Help!, Paul S, Tue, 25 Jan 2005 16:36:09
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p0327 when accompanied by lack of boost is a condtion where the ECU puts the ignition timing into heave retardation. Tech-II can detect that there is a lack of a signal from the DI cassette. So the new DI may be defective, or a break in the connectivity of pin #7 from the DI connector which becomes #44on T5, #38 on T7 at the ECU. ECU probably refuses to make boost when it cannot see knock sensor signal from DI.
What are you driving?
P0455, check for leak in hoe from TB to evap control valve, might be split or cracked and damage may be on underside of hose. Could be a leak in the hose from the valve to the tank or charcoal canister, or a bad fuel cap, or loose fuel cap. Any damage in right rear fender well where filler pipe goes thru? Anygas fumes? Could be a bad purge valve too.
Check fuse 16 for purge and shutoff valve.
Both problems could be caused by problems with the engine ECU mass connector, but that does not seem likely.
posted by 68.95.11...
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