I'd be inclined to wonder about the EGR valve myself. It's funny that it's not throwing codes tho. If it's stalling like that it should be throwing a code that it's running lean or something like that too... I guess you could check the TPS voltage as someone suggested and see if it's got stable increase/decrease. I can see that it would cause a stall if you opened the throttle and the TPS didn't send the correct info to the PCM to increases the fuel. Then you'd have a lean condition tho... Same as a carb with a plugged jet... You crack the throttle and it stalls because there's too much air and no fuel. On the other side of this you have the MAF sensor. Really... I thought the MAF was mostly responsible for mixture control moreso than the TPS. Anyhow, if it's not the EGR valve then I'd look at the voltage of the TPS. If it was good I'd probably go ahead and change the MAF sensor provided there's no codes suggesting something else. O2 sensors are another thing. Might check the wiring to them but usually they lead to a rich condition and gas guzzling.
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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