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-   -   SRT Engineers Chat Session Q & As (http://www.jeepgarage.org/f25/srt-engineers-chat-session-q-and-as-472.html)

Frankie 06-11-2009 08:46 AM

SRT Engineers Chat Session Q & As
 
Here are some of the Questions and Answers...

Frankie 06-11-2009 08:46 AM

Re: SRT Engineers Chat Session Q & As
 
Question:

What would be your speculative answer/cure to the vibration issues over 70mph many are reporting and also how come the inner tread wears out so quickly in the GC srt8, could it be from the factory camber settings or is there another reason for this?

Answer:

Two possible causes for the vibration over 70 mph are wheel imbalance or driveshaft imbalance.... There is a TSB for the rear driveshaft, which would resolve this issue if it is the driveshaft.

With respect to the tire wear, we suggest having an authorized Goodyear dealer inspect the tire.

Frankie 06-11-2009 08:48 AM

Re: SRT Engineers Chat Session Q & As
 
Question:

I have a 2008 Jeep SRT and want to upgrade to the Kicker system. Since the stock Boston amplifier is rated at 276 watts (6x46-w) and the Kicker amp I'm told only uses 6 channels for the Jeep (6x46-w = 276 watts), is there any reason or advantage to buy the Kicker amp? Can't I just keep the factory Boston amp and upgrade the speakers?

Answer:

The Kicker amp equalization is optimized for the Kicker speakers. Additionally, the Sub-woofer frequency response will be sacrificed due to the low frequency rolloff differences in the Boston system vs. the Kicker system.

Frankie 06-11-2009 08:49 AM

Re: SRT Engineers Chat Session Q & As
 
Question:

What are the flaps for that you can open up in the L and R front wheel wells.

Answer:

Those flaps are used for the non-SRT Grand Cherokee fog lights service.

Frankie 06-11-2009 08:50 AM

Re: SRT Engineers Chat Session Q & As
 
Question:

What is the fix for the coolant spray coming from the radiator cap area (stock, not 180 thermostats)?

Answer:

We've contacted the platform engineers on this topic since this is common part for all engines applications. There was a change to the bottle in 2008, to resolve other concerns.

Even though we have not seen this on our test vehicles, you could add a hose clamp to the return line to insure that there is not a leak at that interface.

Frankie 06-11-2009 08:52 AM

Re: SRT Engineers Chat Session Q & As
 
Question:

As some you guys know I have a 2008 Jeep with the factory Kicker HP system. I have been contemplating upgrading my single sub woofer to the Mopar dual subwoofer. I was told that the dual sub might not be compatible with the factory system, something to do with EQ settings. Would there be any disadvantages to doing this upgrade anyway?

Answer:

The EQ difference is between the factory Boston system and the Kicker system - you already have the Kicker amp and the Mopar guys did their homework - you should be good to go!! Now you can be Livin' LOUDER.

Frankie 06-11-2009 08:53 AM

Re: SRT Engineers Chat Session Q & As
 
Question:

Guys,
I recently replaced the rear tires. The fronts have over 65% tread still left. How do I know if the transfer case needs to be replaced. It feels like only the rear wheels are working. Is there a simple way for the dealer to be able to determine if the transfer case needs to be replaced? Yes I have seen the SERVICE 4WD drive light on 3 times in the past 4 months.

Answer :

We note by your post that you have changed from the original wheels and tires. Differences in rolling tire diameter front to rear may affect transfer case operation. The dealer has the diagnostic tools to evaluate the transfer case controller software for stored and active fault codes to determine if any transfer case damage has occurred as a result.

Frankie 06-11-2009 08:56 AM

Re: SRT Engineers Chat Session Q & As
 
Question:

My '08 WK SRT8 still exhibits the common brake squeal problem, mainly when using light brake pressure at low speeds. I don't want to compromise brake performance by switching to "untested" aftermarket pads. In a past session you mentioned something about being more "aggressive" when braking. Is there a specific "bedding" type procedure that I could do to minimize this issue?

Answer:

There is a burnish procedure that we have posted in the past the would optimize that brake performance and some of the sensitivity to noise. But as you mentioned in your post, the brakes are performance brakes and developed for this application.

Brembo Burnish Procedure for normal customer driving:
- Drive the vehicle for 60 miles and apply light snubs for no longer than 2-3 sec.
- Cover the 60 miles applying the snubs every 3/4 of a mile, based on the increasing of the brake bite, apply snubs for a minimun of 50 to a maximum of 75 mph.

robpp 06-11-2009 10:30 AM

Re: SRT Engineers Chat Session Q & As
 
Quote:

Originally Posted by xoxSTUGOTSxox (Post 9501)
Question:

What are the flaps for that you can open up in the L and R front wheel wells.

Answer:

Those flaps are used for the non-SRT Grand Cherokee fog lights service.

I think they got this wrong for the early ones up to 08. its to service the little blinker bulb that lives just behind the amber in our headlights. but what do i know??????????

BillsHoe 06-11-2009 11:04 PM

Re: SRT Engineers Chat Session Q & As
 
Quote:

Originally Posted by robpp (Post 9585)
I think they got this wrong for the early ones up to 08. its to service the little blinker bulb that lives just behind the amber in our headlights. but what do i know??????????

WELL YOUR TELLING US A HELL OF ALOT MORE THAN THEY WOULD :lol:

robpp 06-12-2009 10:10 PM

Re: SRT Engineers Chat Session Q & As
 
yeah its quite a joke. I went thru the threads and it seemed rather thin on questions.

I guess everyone is tired of NO ANSWERS!

DirtyBlackJeepSRT 06-12-2009 10:23 PM

Re: SRT Engineers Chat Session Q & As
 
I'm pissed not 1 question has been answered. :mad:

No coolant spray fix
No vibration fix (they referenced the TSB, but it doesn't apply to WK SRT8's, only WH Export models even though we share the same part)
No rear brake squeal fix on the 2008s (Even RS has the problem along with many others. I shouldn't have to spend $300+ on pads with only 15k miles. I'll go with the CTS-V pads, but I want to keep it stock until they are actually worn to warrant a change.)


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