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Yes I meant to say lean. So in terms of the EGR codes, I don't believe that to be enough of an issue to cause a lean condition. Although to solve that issue I will be deleting the EGR system for the reason of me having a custom exhaust with long tube headers, all this work has been in preparation for my new 351W engine, which from factory, the EGR is connected directly to the exhaust manifold, me having long tube headers, I would have to custom make something to make it work which I am not planning on doing and so It wouldn't be worth my time to repair that system. So Being that I now have essentially a mustang ECM, would that mean that there is a different method for pulling engine codes for the KOER test? different from how I would get the codes on the factory ECM? In terms of wiring issues, I have checked my work and don't believe to be an issue. I will note that the check engine light only went away after about a week or so of driving with the conversion, so whatever caused it to go away despite the fact that it should still be there, seems a bit suspicious. I think if I can get the KOER codes from the ECM then that would tell me exactly what the issue is causing my lean condition.
So Being that I now have essentially a mustang ECM, would that mean that there is a different method for pulling engine codes for the KOER test?
I am using a Mustang A9L computer and the procedure is the same as the truck computer. I did not change the EGR sensor from what was originally in the truck.
I did some more fiddling around, I tried unplugging the MAF sensor and the truck ran exactly the same as it did before, I could be wrong but if there was no change, to me that sounds like the MAF sensor was never working correctly to begin with. If it was working the truck should be running worse right? also still no check engine light is coming on
so I followed the steps, the MAF seems to be working fine. Only thing I will add is that it looks a bit different than a conventional MAF sensor for these trucks.
unfortunately I fount out why I don’t get a reading on my AFR gauge, I get a P00 code when I turn it on, which I believe means it is not getting a signal from the sensor, so now I need to repair that before moving forward as that is my only way of telling if the truck is running lean or rich
That's a slot style sensor from a newer Ford. Certainly nothing that will work with a stock Fox Body Mustang ECU. You sure this wasn't one of the "upgraded MAF/injectors" kits?
Do they not have you put clamps on those silicone couplers?
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Yeah that is the wrong sensor which won't work on it's own without something to fool the computer, and that conical filter should not be that close to the MAF meter... never mind the fact it's open to the engine compartment which is also bad.
Yeah that is the wrong sensor which won't work on it's own without something to fool the computer, and that conical filter should not be that close to the MAF meter... never mind the fact it's open to the engine compartment which is also bad.
The meter you should have looks like this...
yes I would agree with you, it’s definitely not meant for a mustang, I’ve never even seen one like it. The IST kit showed that it would have a sensor like you sent above. Maybe the air adjuster is what helps the computer become compatible with it. I have in mind to isolate the filter somewhere else, but at the moment this was all that was included in the kit. I think the only thing I can do now is to try and pull codes from the computer. If this MAF is not compatible, then the computer should send me a trouble code. I can’t get codes for the KOER test so I ordered a code reader that will work for my truck, maybe it will be able to help me out. We will see. The kit didn’t even come with the couplers, I had to buy those separately that fit so tight I probably don’t even need clamps but that photo was only take as a test fit when I installed it. Since then I have added my own clamps
Since we know he's using a Mustang ECM/PCM, I would pull the cover and inspect the board. I had 3 Mustang PCM's and all had capacitor failures and 1 with a burned trace. If IST had better customer experience, knowledge like SPE has, then the OP should be happy with the product. It seems IST has failed this individual, in more ways than one and perhaps many others. Who knows if the even did a Quality Control check of the PCM. OP basically had to fight them into delivering him the product.
If he's out of the warranty period, he has nothing to lose by opening the PCM and inspecting it.
My memory is fuzzy since I converted my 302 SD to MAF 8 years ago, but the wiring for the CEL should be the same, I assume. If his CEL isn't coming on when he turns the key to START, then I suspect PCM problems.
And as someone mentioned (Conaski, I believe) the Conical air filter is located to close to the meter. That causes numerous issues with the MAF meter correctly reading.
Yeah I'm not sure why It's not a honeycomb style MAF sensor.. I'll have to look into it to see if it is actually working with the ECM., if it isn't it should give me a trouble code at least. So how far away should the air filter be from the MAF sensor? I recall reading somewhere that you don't want any bends near the MAF sensor either?
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