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only swap AMM if numbers match
Posted by KeithG (more from KeithG) on Thu, 21 Jun 2001 09:39:29
In Reply to: Failed Emissions - Follow up, Jim Foley, Thu, 21 Jun 2001 09:08:15
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I do not have a feel for how much the leak could affect NOx readings. All I can suggest it to test it again. As for an AMM failure, I have experienced a bad AMM causing a rich condition and fluctuating unsteady idle. I am sure that Ari or other contributor could let us know if this is the only failure mode. Print out the 16 page LH faq on TSN. It will list the voltage at the AMM at 2.15V and the correct pin to get this from. (you have LH 2.4) I think it is an orange wire, but check to be sure. See if you are getting a good signal here. Check the voltage to the head then again to teh battery negative terminal. If there is a difference, clean the ground points on the engine lift eye on the head. Do not worry about the timing. It is FIXED and cannot be adjusted. The EZK controls it and it is triggered by the shutter wheel on the crank pulley. The hose you mention is probably the hose between the cannister and the solenoid valve, right? or was it from the rigid line to the solenoid valve? Between the valve and the cannister would have little to no effect on a lean condition. Is the solenoid valve clicking away at idle? It can fail in an open condition causing a leak. The other hose would have an effect, though. To check the fuel pressure, you need a gage and a special fitting that replaces the banjo bolt towards the front of the car. Low pressure here would cause stumbling on acceleration.
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, Thu, 21 Jun 2001 11:10:01