Timing chain failure on the Dodge Challenger - Page 123 - Dodge Challenger Forum: Challenger & SRT8 Forums

Dodgeballz · #**1221** (**permalink**) 09-09-2012, 05:08 AM

I want to disable MDS with a predator but would like to keep stock tune for the most part, can I just turn off MDS and leave stock settings on ? Don't want to change shift points or octane grade.

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crow · #**1222** (**permalink**) 09-09-2012, 06:43 AM

Originally Posted by Dodgeballz

I want to disable MDS with a predator but would like to keep stock tune for the most part, can I just turn off MDS and leave stock settings on ? Don't want to change shift points or octane grade.

Sent from my Autoguide iPhone app

Yes you can do that. Select Modify Stock Tune.

Dodgeballz · #**1223** (**permalink**) 09-09-2012, 02:05 PM

Crow, do I have to download any updates to a predator from a home computer first?

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crow · #**1224** (**permalink**) 09-10-2012, 07:51 PM

Originally Posted by Dodgeballz

Crow, do I have to download any updates to a predator from a home computer first?

Sent from my Autoguide iPhone app

No. You do not have to update the crom files if you do not want to. But, it's usually a good thing to have the latest file anyway.

When you plug it in, select modify stock tune, then select MDS>disable.

Dodgeballz · #**1225** (**permalink**) 09-11-2012, 04:55 AM

Thanks, I hope this is going to help save my chain from snapping in the future, or at least until we hear of a definitive solution. I hope disabling MDS doesn't cause any additional problems to the motor, don't no what to do next after this.

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**HemiEd** · #**1226** (**permalink**) 09-11-2012, 07:00 AM

Originally Posted by Dodgeballz

Thanks, I hope this is going to help save my chain from snapping in the future, or at least until we hear of a definitive solution. I hope disabling MDS doesn't cause any additional problems to the motor, don't no what to do next after this.

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We are all just hoping at this point. Sad.

Dodgeballz · #**1227** (**permalink**) 09-11-2012, 09:53 AM

Not hearing much from the people with recent failures on this thread, if your still involved with this please inform as to what's going on.

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luma · #**1228** (**permalink**) 09-11-2012, 05:55 PM

Welp - chalk up another one. Driving ~80 on a flat stretch of highway, lose power, pull over, and can no longer start the engine. Checked the obd port and it reports an issue with the crankshaft position sensor. Got towed to a small town shop and 2 weeks later I'm still without a car and they've just ordered up some valves after replacing the timing chain and finding that didn't fix it.

2011 R/T 5.7 Auto with MDS, 24000 miles.

Question - I asked the dealer directly if there was any damage to the pistons, and they said no. It strikes me odd, as the valves presumably hit the pistons. Do I have any leverage here to get somebody to double check those pistons?

randycat99 · #**1229** (**permalink**) 09-11-2012, 05:58 PM

I know I would be a little insulted and skeptical if a tech at the dealer told me that. I'd have to ask him to explain how that is possible on an interference style engine?

crow · #**1230** (**permalink**) 09-11-2012, 06:25 PM

Originally Posted by luma

Welp - chalk up another one. Driving ~80 on a flat stretch of highway, loose power, pull over, and can no longer start the engine. Got towed to a small town shop and 2 weeks later I'm still without a car and they've just ordered up some valves after replacing the timing chain and finding that didn't fix it.

2011 R/T 5.7 Auto with MDS, 24000 miles.

Is this the first 2011 timing chain failure?