Recent content by Long Gone
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sudden RPM increase rough iddle
Thanks Zeb. That is encouraging. It may be a while until I can get to it as we just got news that the expected granddaughter is arriving and we are going to have to head there to meet her. It's only 700 or so miles so everything should be here when we get back. Thanks again. -
sudden RPM increase rough iddle
I replaced the FICM once on this truck about 4 years ago after the truck started behaving inconsistently in that it would run as if some injectors were missing and sometimes hard start. I was trouble shooting bad injectors by using my non-contact thermal gun and had good luck using that method... -
sudden RPM increase rough iddle
Got new MAT sensor and get the same results (-40 when plugged in and 419 unplugged) as with the original. Very consistent from one sensor to the other. No change in temp reading with movement of the wiring harness, and am not finding any loose/corroded grounds. Since the MAT (IAT#2) is an... -
sudden RPM increase rough iddle
Thank you bismic. I didn't realize that the IPR is a bang bang valve, from what I had read I was thinking it was implied anyhow that it was a proportional valve. I saw a video with deiseltechRon talking about the ICP and saying that the % reading was a calculation from other sensor extrapolated... -
sudden RPM increase rough iddle
Oh , but if it were only that easy for me...(nothing is ever easy that is worth doing..) I've worked a bit with thermocouples in industry as an industrial electrician most of it type J some K and others, who knows what type the MAT is really. In the IH literature I've found what they are calling... -
sudden RPM increase rough iddle
Thanks Zeb and 6.0 Tech I will look for that MAT on the driver side, as much as I have been over it I don't know how I missed it. -
sudden RPM increase rough iddle
One other anomaly I need to check is that I see my MAT is reading -40 so that is strange. Have no idea what that is about. -
sudden RPM increase rough iddle
Oh hi gohouston and 6.0 tech. Thanks for the input. yes it is the early 6.0 and I have an ICP and connector on the way. Are you saying to go with the 05 ICP then or just a new old style I'm thinking that your saying go with the 05 version. If so I need to order that instead of the old style as I... -
sudden RPM increase rough iddle
Got an ICP and connector coming, but I'm not sure that is going to do it. Almost seems like FICM or PCM gone crazy. It started up great today about two seconds cranking and fired up normal 750 Rpm and smooth. Ran great could increase idle gradually and smoothly and hold what ever rpm I wanted... -
sudden RPM increase rough iddle
I think the oil was on the plug from the work I did. I noticed it as I was putting the harness back on, but didn't think that much about it at the time. I don't think the sensor is leaking, but it is hard to say for sure. It seems to be sending numbers that are close to where I would expect them... -
sudden RPM increase rough iddle
I'm wondering if the wiring harness isn't chaffed some where. I was messing with the exhaust clamp on the turbo, passenger side just before this started happening so I'm wondering if I bumped something there. -
sudden RPM increase rough iddle
Y a the plug had some. Hard to see either esp the sensor. -
sudden RPM increase rough iddle
Update: Cleaned connector with solvent and blew out connector. reconnected and started fine. ICP 1500 and Ipr 15 ran smooth and normal for about a minute or so and then the IPR jumped to 29, ICP 2900 and RPMs jumped to 1100 and romping harshly. -
sudden RPM increase rough iddle
Thank you for the input Zeb and gohouston. I have got those numbers backaswards there for sure, sorry about that. I have suspected that it might have something to do with the ICP, but I was not getting my head around it as the lower value at around 27ish would be running the IPR pretty near... -
sudden RPM increase rough iddle
Just got everything back together after HPOP went out due to disintegrated sump screen under oil cooler in an 04 built 8-22-03. Replaced HPOP with Thoroughbreds/dieselsite adrenaline pump/ oil cooler and sump screen (this time SS upgrade of course). Things were looking good, went about 80 mi...
