Cold Starting with a tune

rammertide07 · #1 Thu, January 5th, 2012, 01:34 PM

Last week I drove to a burger joint and got something to eat. Truck sat for about 30 mintues in high 30* weather. When I went out to start the truck, it would turn over and one cylinder would fire like it started...then it would just die (this was on the 140 tune). I tried to start it again with the same result. Switched my chip to stock and it started fine. GPR and 7 glow plugs are good. Oil is 10W-30 with about 2k miles on it.

My dad is up in NC this past weekend in his 01 F250. He just had a Superchips programmer put on it the week before Christmas. He went to start the truck in the morning to let it warm up. But with the tuner set to 75hp, it would not start. He loaded the 40 light tow tune and it started right up.

Is this normal for the trucks to act like this? Or is it a sign of weak oil system (IPR/HPOP)?

***907DAVE*** · #2 Fri, January 6th, 2012, 04:06 AM

Sounds like something else is causing your issues. The tuning is virtually stock during crank and idle situations in all programs.

rammertide07 · #3 Fri, January 6th, 2012, 04:39 PM

Okay, I thought that maybe there was something a tune did in any running situation that could cause this issue. I have read a couple of other people post the same issue on other forums...not being able to start cold with a high tune. Thanks

dietoremain · #4 Sat, January 7th, 2012, 03:06 PM

Very odd, mine starts fine in ANY tune, no problems.

rammertide07 · #5 Mon, January 9th, 2012, 01:56 PM

Mine does too...99% of the time. I've even started it on a cold morning (28*-30*) without it being plugged in. Its very random..only done it twice.

***907DAVE*** · #6 Wed, January 11th, 2012, 12:50 AM

Sounds like it may be a GPR problem, they can be hit and miss sometimes.