SCT and over heating

[tec548]

I just put on the SCT Extreme Street program on my 04' EX. It runs great but heres the problem... the cool fan will not turn on. I brought it back to Power Stroke Magic and they diagnosed the cooling fan was not responding. I had them go ahead and replace the fan clutch. Well... problem persists. On the highway @65mph it is showing 3~4psi boost (flat land), ECT runs as high as 210 with EOT at 215 (just normal driving). Fan never comes on. Slow down or pull over and idle the temps drop to 188~190. I thought I read on this forum there is a specific item that has to be checked in the program on the 04' 6.0L or the fan may not work. I can't find the thread anymore and can't get any help with the issue. I would flash back to stock and drive that way but I have the Garrett PowerMax turbo installed as well. Any help would be appreciated... Oh it's the Innovative tune thats on the truck.

[Lilpooh]

Out of curiosity, do you have the EGR valve plugged in electrically?

[tec548]

Yup... that was the problem. Got with Eric at Innovative and they were able to get it worked out. It was a problem caused by a conflict with the EGR "not" connected. A new program has me back in business. It is good to let everyone else out there with 03.5' and 04' 6.0L that they could have this problem with the EGR unplugged.

[Lilpooh]

Originally Posted by tec548

Yup... that was the problem. Got with Eric at Innovative and they were able to get it worked out. It was a problem caused by a conflict with the EGR "not" connected. A new program has me back in business. It is good to let everyone else out there with 03.5' and 04' 6.0L that they could have this problem with the EGR unplugged.

I've had the similar experience with my early '04 with the VXAP2 strategy.
http://www.thedieselgarage.com/forum...d.php?t=102838

[BDSford03]

Did you not tell Eric you had a EGR delete in the first place? Just wondering because I didnt have that problem on my early 04 with the VXAP2 strategy

[tec548]

Yup...Everything that was done to the truck was stated, however... I did not say that the EGR was not plugged in... just said it was deleted... (never thought that some left it plugged in but blocked off). That may have been the disconnect.

I was reading in Lilpooh thread... how do I check to see if the turbo vanes are cycling? I did not even think that this would be effected as well. Should this be corrected with this new file too? I guess I need to talk to Eric.

[BDSford03]

I have never paid specific attention to whether or not the vanes were working properly. One way would be low boost, also listening at idle if the tune from eric keeps the VGT sweep (which I dont think I have heard on mine). Let me know what you come up with.

I have had my xtreme street tune on for a little over a month and haven't noticed any issues but I guess Ill pay closer attention tomorrow and maybe plug in the livelink.

[tec548]

Well, Eric has been been great trying to help me out but I think I have another problem now. Eric did get my fan turning on, but I still run hot on the highway... actually hotter now than before. I changed the water pump on the truck in November with another stock unit. Since I was have this initial problem and the coolant temp had been getting as high as 215 at times. I'm wondering if maybe I now have a cracked or damaged impeller. It is acting like the truck is not getting enough cooling when under load. At idle it runs 188~190 ECT and 193~194 EOT. On the high way at 65... ECT runs 206~210 and EOT runs 211~215. If I pull over it will cool right down. Before, the fan would not run at all after the EGR delete with SCT software. Now, the fan runs but the truck still gets hot. Because it cools down to 188~190 ECT when at idle I don't think it's a thermostat issue. The fan runs now so I don't think its as a software issue (anymore... thanks to Eric). Coolant and oil is Rotella and it is fresh and at the proper levesl. The only thing I can think is the impeller on the water pump is either slipping or damaged thus not flowing enough coolant to the engine. Does any of this sound reasonable? Do you have any other ideas? I'm at work and have to drive home 500+ miles next week... and I don't want to be on the side of the road.

Joel

[Evil Eye]

It sounds like the fan clutch is locking up but not at 100%. Plug the EGR valve back in and see if the fan clutch locks properly.

[tec548]

I don't have the EGR valve to plug into. Do you think that the fan running slow could cause this?