Re: Still get overtemp no SC with Code 3 pulley and new johnson pump
tighed, nice post.
Yes, heat kills power and our cars are terrible at cooling. Remember... Chrysler gives less of a warranty on our SRT's for a reason: because they're under heavier abuse from the elements. An obvious one is heat.
As Woody has made VERY clear to us, the stock cooling is "good enough" but is in the wrong location. The stock H/E would do fine for the code 3 pulley if it were just located up higher, behind the grill. It basically gets no air in its stock location.
Adding a johnson pump does almost nothing due to the stock HE's restrictions. Its almost worthless to add the johnson pump. You need to get an HE, whether the stock one or the LET one or a big one like Woody's contraption, moved up behind the grill in front of the radiator. There is no way around this. Not even adding fans below at the stock location will help, as Woody pointed out.
Like recent responses have said, a "stuck" clutch would not be able to be disengaged when temps over-heat. The fact that its disengaging due to high temps says a lot. I don't think its the pulley at all. Its heat.
Start at the source of S/C shutdown. Its the ECU. Why does it shut the S/C down? Because the IAT is reporting temps too high. Why does the IAT report temps too high? Because either temps are too high or the IAT is dieing and showing it due to increased heat and boost.
Replace your IAT if possible ($15)
If its because temps really are too high, why is that? Because the current system state cannot accomadate the higher boost and higher temps.
The current system state may be affected by... A restrictive H/E is even more restricted due to crud in it, or a recently serviced H/E has air in it and needs to be bled, or a bled H/E has a small leak that is sucking in bubbles everyday, or variables such as temperature, dirt covering the engine, crud in the system, and a smaller pulley are combining to push the car right over the imaginery border into the overheated range.
Honestly, I'd replace the IAT before anything.
I know all I did is repeat what others have already said but it was my turn I guess...