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Old 02-05-2014, 09:23 PM   #41
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Braved it an ran it up and down the short section of my street. Got as high as 45 mph with foot to the floor without a miss. Will take it out tomorrow and do that some more. Only thing I did different today was disconnect the 24x cps and reconnect it and did the same with the connections on the icm.

Anyone know what a dealer charges for doing the relearn process for the cps?
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Old 02-06-2014, 03:09 PM   #42
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sounds like the issue is with either the icm connector or crank connector or the wires in it are loose.

the crank relearn is most times unnecessary i have replaced two and not needed to, but some times you do, its more of a wait and see if the new ones output is the same the old one. and the icm/crank sensor only control spark at start to a certain rpm like 500 but as the engine revs to cold temp rpm its taken over by the pcm with a signal from the crank sensor that goes through the icm
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Old 02-06-2014, 03:45 PM   #43
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That is the thing, both crank sensor were changed at the same time, not sure if the second crank sensor has to be relearned or only the first one is a problem. What I do notice is that it just smells rich while it is running and the fuel trim doesn't look weird or anything and what else besides timing would cause it to go rich if the pump pressure isn't very high? I need to drive it long enough to see the O2 sensor complete the cycle which neither one has from just idling. The EGR hasn't reset either so i have all these sensors in an incomplete mode at this moment.

The Manual says if the crank sensor is off enough it will never throw a code for the cam sensor or perhaps other devices? I tried to hit 50 mph on my street to let it coast down and reset the EGR valve but can't get the car that fast on the short stretch I have.
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Old 02-06-2014, 04:41 PM   #44
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can you see what the temp sensor sees in the pcm? that can cause some issues if wrong, also if its in open loop its not running off returns from sensors, basically an engineering best guess and is not likely perfect for rich lean etc, its just to get where you need to go, alot of times they err on the rich side as its safer for the engine than being lean
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Old 02-06-2014, 04:51 PM   #45
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I can watch the temp sensor and it seems to match the gauge on the dash fairly closely and I can also see that the low speed fan does come on when needed. One of the reading on the Actron scanner makes me question the mode as it shows CLSD which I would think was the closed mode function but that I am not sure of. How long will the computer stay in the open mode, once up to temp wouldn't it want to change to closed mode? I see the atmospheric pressure and manifold pressure and air flow, all the other things it needs to change over except for O2 sensors say incomplete but I see the voltages changing on both sensors and perhaps the EGR but that is it. I know all the sensors are working as I can see them change on the scanner and the reading seem to be within acceptable values.
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Old 02-06-2014, 04:56 PM   #46
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the o2s have to be within acceptable limits or you would have codes, and the engine should switch to closed loop fairly quickly when the engine is already warm a few minutes maybe
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Old 02-06-2014, 04:57 PM   #47
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the gauge gets its reading from the pcm in some cases. do you have a IR gun to verify?
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Old 02-06-2014, 05:06 PM   #48
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No IR gun but I could use my multimeter and a thermocouple to confirm the temps. The O2 sensor voltage reading on my scanner are within range of what the manual says they should be but since I have no miles on the drive cycle to speak of the tests are showing incomplete for any codes or confirmation that they are ok. I am about to go out and drive it in circles on my street and see if it will complete these test, it may take me a few hours of driving in circles to get an answer on those, I think it can take up to 50 to 100 miles for some of those tests to complete. I don't expect the EGR test to complete as the manual says you have to exceed 50mph and coast down to set the EGR position and complete any test on the circuit.
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Old 02-06-2014, 06:37 PM   #49
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Drove the van around the neighborhood for at least an hour and braved going up and down the steep streets and I mean steep. Not a miss or anything? As far as temperatures the peak temp I was seeing was 228 and drops down to a minimum of about 208 before climbing back up, average was about 221 most of the time.

A strange thing that I was seeing is though the odometer on the dash was showing mileage changes, I think I drove about 10 miles in circles, was that my scanner tool never showed any mileage change, stayed at zero miles the whole time. doesn't make sense as the odometer is going through the pcm. Still haven't completed the O2 sensor cycle, still reading incomplete.
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Old 02-06-2014, 09:29 PM   #50
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i dont think the pcm keeps the odometer reading it just sends the vss signal to the speedo and requests the number when it needs it. the o2 im not sure if you are talking about the catalyst it takes several key on cycles to hot not just a bunch of concurrent miles
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