magnum computer glitch??

**Hurst Equipped** · 12-23-2005, 01:00 PM

deleted

**COLORADOMAGNUM** · 12-23-2005, 01:12 PM

I hadn't noticed this yet.

**wheelife** · 12-23-2005, 01:29 PM

I will check, I thought something like this may have happened to me. punched it and wouldnt shift till i got off the gas??

**fnkychkn** · 12-23-2005, 07:13 PM

Originally Posted by 65standard

maybe fnkychkn has heard of this? anyone else try this test?

the only similar case i've seen has been an 06 SRT8 MAG that would bump the rev limiter during wot 1-2 upshift. it was repaired with a TCM flash as per TSB 18-031-05. this TSB applies only to 6.1L equipped vehicles but may be useful in diagnosis. possibly the same glitch?

quote from this TSB:

Randomly during a wide open throttle condition the engine RPM goes beyond the fuel cutoff point before the 1-2 upshift is made. This causes a short hard bump at the beginningof the shift. It is more likely to occur if the vehicle is traveling around 15 MPH and then the throttle is pushed to wide open (WOT).

This condition is caused by the TCM not being able to calculate the correct engine speed at which to initiate the shift.

**Husker** · 12-24-2005, 02:37 AM

I am having the same issue, but I was thinking it was due to the chip I installed a bit ago.

**Meister** · 12-24-2005, 04:05 AM

Could not duplicate in 7 or 8 attempts. Going WOT prior to 1-2 shift (which occurs at around 15 mph when driving my normal easy) snapped my neck, going WOT after or during the shift resulted in immediate torqy pull followed by smooth but quick downshift to first and another neck snapper. Was never able to catch it in limbo or confuse it in any way.

I attribute much of that to the jetchip, which juices the tranny and thus reduces lag & slop in it. As it does the motor via timing advance and fuel changes.

**fnkychkn** · 12-24-2005, 02:28 PM

Originally Posted by 65standard

i better go and open my hood again, maybe i have an srt. i can't imagine a problem on an '06 that isn't on the '05 model. maybe a second year glitch?

i can reproduce this glitch 100% of the time. i will have no problem showing the dealer is condition. now, the question is what will he say. "this is normal for the hemis."

this is definitely not "normal". if there is a DTC that can be diagnosed like a faulty trans speed sensor, repair should be minor. however, if it is a software glitch, you may have to wait for a TSB/software update. in the meantime, try to keep it off the rev limiter.

**JMatt** · 12-24-2005, 02:41 PM

That does in fact sound similar to the TSB for the SRT-8. Generally, if you were already going several miles an hour, then floored it, we would hit redline quicker than the computer could realize to shift, and we bumped into the rev limiter. The cars would still shift though, it was just VERY rough after bumping into the limiter. The TSB fixed the issue, but some members complained that the fix just caused the car to shift several hundred RPM lower to avoid the rev limiter.

Although similar, I'd be surprised if your issue is the same as the SRT-8 TSB fnkychkn mentioned.

**Meister** · 12-24-2005, 03:13 PM

Originally Posted by 65standard

it must not be the same problem. mine will not shift. i held it wot for 3 or 4 seconds to see if it would shift without lifting the throttle. it will not. i am not hitting an ignition type of rev limiter, i am hitting a fuel cut-off limiter. the motor shuts down and goes silent and deccelerates.

Oh that oughta' really impress the ricer you were about teach a lesson!

Like funky said - it's Dealertime!