Looks like my pyro is dead, or dying.

Last week, while @ hiway cruise, needle started to climb rapidly. S'prised me, I lifted, still climbing, then stopped and came back to normal. Continued to function normally.

Yesterday, while stopping to shutdown, once again needle climbs, quivers, drops and returns to normal. Later in the day, make short trip, pull up to shutdown, and needle is @ 6 o'clock, pegged. Flutters all around, returns to pegged.

Autometer street performance probe and gauge. Post turbo. Never been exposed to excessive temps. All external wiring and connections are loomed, heat shrunk, and fastened.

Guess we tear into it this wknd and see if we can find anything wrong. Anyone have any experience with this?


__________________

 

I've got the same issues with an Isspro EV since day one.

Really gives you the creeps when driving up a mopuntain and the pyro pegs all of a sudden...

AlpineRAM

 

Maybe check all of your grounds . My pyro was doing sort of the same thing today and what was really wierd was it would function normally if I held my emergency brake release . Turns out that my excess ground wire had fallen down and was getting caught on the E brake lever . Maybe the same sort of thing with yours.
Scott

 

Yeah-- DO check the grounding. I ha a spotty ground that was making my needle go crazy on the Autometer. An alligator clip and some dielectric grease later, I have no problems at all.

Justin

 

I have had problems that when I add some additive to fuel (Cetane Boost and not measured correctly), the pryo won't go past about 400 degrees. No matter how hard I try to get it past that. Luckily, with the power turned down for the snow, it only hits 950 at WOT so I am not worried about it. As that tank of fuel gets eaten up, pryo starts working again without a problem. Some times just letting it sit over night it would clear up also. Most times now though I have noticed it looks to be running cooler then what it use to be at while driving down the road. I feel that it is time for a new one on my truck. Just doesn't seem right to be going down the road at 50 mph and having it sit still at 350 degrees when I know it was around 500 - 600 most of the time. The best one is coasting down hill (steep, 10 percent) that it almost gets down to 150 degrees. I just love that. I am hoping to watch it get below 0, then I know something is wrong.