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  #13  
Old 07-10-2011, 11:56 PM
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Re: Limp Mode 2006 SRT8

Yeah man sorry to hear. These threads pop up every now and again and I know limp mode is a SERIOUS issue! Anyone who has experience can tell you. I wish we could collect data in ONE PLACE (maybe limp mode sub section or ONE stickied thread Scott? lol) This way we could see who is experiencing the issue the most?

I find its the SRT guys the most and also some 3.7's which of course share the NAG1 A580 but also as Rob stated the shift module ESM has been the culprit for many. I had the issue few times when romping on it in the city and using the autostick. When I do not use it and leave in Drive it doesn't experience the symptoms leading me to believe it has ALOT to do with the electronics under the module having an issue and in turn sending false electrical signals to the pcm/tcm and thus leading it into "limp mode".

Mine even at times downshifted itself all the way to first at higher speeds but luckily I got her down quick so I didn't over-rev it and nothing serious happened. NEVER any CELS/codes, but once I even had entire dash wold flash few times and then stop after a restart. Then car would drive fine. TO NOTE: Had a Viper aftermarket alarm installed which I think was part of issue as one of module was going bad and after an update and new module, dash seemed a-ok!

I had a local trans shop plug her in to find NO CODES and no real issue driving around with the guy. I know the A580 is a strong trans so mechanically the tranny was NEVER my concern. As long as you keep maintenance up to date (fluid/filters etc) that isnt something ID worry about. The shift module is my main concern as it has little plastic pieces under it that work directly with the shifter when in autostick that can fail and also cause issue like "limp mode"

Really Id see when you experience it most and document it. Make sure all maintenance is ok and maybe have local friend/mechanic take a ride or peak and see if you can reproduce it. Beyond that, its really hit or miss with these things. You may never experience it again for rest of the vehicles life or may do it 1x a week in which case you'd need to solve it G/L, I say we get a thread going and start collecting data!
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  #14  
Old 07-11-2011, 08:34 AM
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Re: Limp Mode 2006 SRT8

robpp, I did the key dance again as you described....CEL light stays on, does not blink, so I guess there are no codes. Soontobesrt, thanks for your thoughts. I understand the shift module fix is $900+ bucks, which for me is out of warranty. Doesn't seem fair to have to pay this for a design defect. My SRT8 has been fully dealer serviced from day one. Can a good jeep trained mechanic clean/repair the module? (I'm a soon to be 2012 SRT8 owner also...then I'll have two: a 2006 and a 2012)
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Old 07-11-2011, 09:34 AM
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Re: Limp Mode 2006 SRT8

the service manual says - replace/

if you can find a good mechanic outside of the stealer he MAY take the shifter on.
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Old 07-12-2011, 08:23 AM
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Re: Limp Mode 2006 SRT8

Yeah those shifter mechanism are usually things most mechs. like to stay away from as its gets very complex and vehicle specific. Not that they couldn't find the diagram and all servicing info but it does seem they tend to refer guys to the dealer for that kind of stuff. Probably gives a little insight into why they have these problems in the first place

Now I bet a tranny shop (the automotive type lol) would probably be a little more interested, one by me seemed like he would rip it apart if need be. Luckily wasn't needed but if so thats where Id go.
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Old 07-12-2011, 03:27 PM
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Re: Limp Mode 2006 SRT8

How is your trans fluid level? I know on the nag the guide bushing (connector seal/retainer) is a COMMON leak point that I have seen cause numerous weird concerns, furthermore if its allowed to leak enough your fluid level could be low.
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Old 07-12-2011, 05:00 PM
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Re: Limp Mode 2006 SRT8

I had the leak at the gasket fixed a long time ago by the TSB. It's been fine ever since.
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Old 07-12-2011, 07:13 PM
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Re: Limp Mode 2006 SRT8

Sadly there are many different things that can cause limp mode. I tried everything. I replaced the typical ESM and that didn't work. It ended up being the clockspring in the steering wheel. Usually though, it'll throw a U code which is a connect code if it's an electrical thing. My advice is go to the dealer and hook it up to a Starscan. I had codes stored in my Jeep that I didn't even know. The typical reader, i.e. Predator, Trinity, Autoparts store, doesn't read all codes. They won't read TCM codes.

My issue was different than your though. My ESP/BAP and TC lights all came on with the limp mode. It could be something as simple as the electrical connector that goes to the tranny. Like I said, go to the dealer and let them check it with the Starscan. Tell them to clear all codes. Once they do that, drive it around and if it happens again, haul ass back to the dealer and see what codes are in it. Good luck.
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  #20  
Old 07-13-2011, 04:40 PM
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Re: Limp Mode 2006 SRT8

Quote:
Originally Posted by Harrison@Stage6 View Post
Sadly there are many different things that can cause limp mode. I tried everything. I replaced the typical ESM and that didn't work. It ended up being the clockspring in the steering wheel. Usually though, it'll throw a U code which is a connect code if it's an electrical thing. My advice is go to the dealer and hook it up to a Starscan. I had codes stored in my Jeep that I didn't even know. The typical reader, i.e. Predator, Trinity, Autoparts store, doesn't read all codes. They won't read TCM codes.

My issue was different than your though. My ESP/BAP and TC lights all came on with the limp mode. It could be something as simple as the electrical connector that goes to the tranny. Like I said, go to the dealer and let them check it with the Starscan. Tell them to clear all codes. Once they do that, drive it around and if it happens again, haul ass back to the dealer and see what codes are in it. Good luck.
Good point, forgot to mention didnt realize you cannot pull TCM codes with normal hadheld. I do think the modis will pull those though, not sure though, i should give it a shot.

Anyone know why this is case, I mean it still must use OBDII port so is the TCM simply a locked section ONLY accessible via the Chrysler Starscan? I need to check this out, could certainly help in diagnosis of trans issues.
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