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Extremely rich and rough idle
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<blockquote data-quote="AfricanSnowOwl" data-source="post: 16488585" data-attributes="member: 168923"><p>Poteet isn't far at all.</p><p>Thank you for posting the links to those diagrams! I think I had seen a few of those diagrams before when I first started trying to figure this out. I ran through most of the sensor tests, and found that the MAP sensor is not at all close to passing the sensor test. With the key on engine off I get 2.6v on the MAP/BP wire. The table says it should be somewhere within 1.51-1.66v for my elevation. This was on the MAP sensor I bought off Amazon for $20. I swapped that sensor to the original one I took off, and got the exact same reading of 2.6v on the MAP/BP wire. That original sensor is 34yrs old and appears to have a small crack next to where the harness plugs in, so I don't trust that that sensor is good. Also had doubts about the cheap Amazon sensor... The diagram says to apply a vacuum pump(which I don't have) to it and vary the vacuum. I started the car which definitely applied vacuum to it, and it still stayed at 2.6v. Never had a MAP code at any point, but I'll try replacing it anyways.</p></blockquote><p></p>
[QUOTE="AfricanSnowOwl, post: 16488585, member: 168923"] Poteet isn't far at all. Thank you for posting the links to those diagrams! I think I had seen a few of those diagrams before when I first started trying to figure this out. I ran through most of the sensor tests, and found that the MAP sensor is not at all close to passing the sensor test. With the key on engine off I get 2.6v on the MAP/BP wire. The table says it should be somewhere within 1.51-1.66v for my elevation. This was on the MAP sensor I bought off Amazon for $20. I swapped that sensor to the original one I took off, and got the exact same reading of 2.6v on the MAP/BP wire. That original sensor is 34yrs old and appears to have a small crack next to where the harness plugs in, so I don't trust that that sensor is good. Also had doubts about the cheap Amazon sensor... The diagram says to apply a vacuum pump(which I don't have) to it and vary the vacuum. I started the car which definitely applied vacuum to it, and it still stayed at 2.6v. Never had a MAP code at any point, but I'll try replacing it anyways. [/QUOTE]
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