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Search: Posts Made By: jeepgcoman
Forum: Engine Performance/Intake/Exhaust 09-03-2015, 09:23 PM
Replies: 3
Views: 194
Posted By jeepgcoman
Re: Drag racing tips and tricks 2010 Hemi

Did you get to the track, Luke? Everything you said above is about as good as you're going to get. You're right though, loading the engine (stall speed) reduces the launch effectiveness. What would...
Forum: Engine Performance/Intake/Exhaust 08-28-2015, 10:10 AM
Replies: 3
Views: 194
Posted By jeepgcoman
Re: Drag racing tips and tricks 2010 Hemi

I am on the road and can't respond right now, but good luck at the track. I'll be back home late next week and, when I get some time I'll put my 2 cents worth in. Again, good luck.
Forum: Troubleshooting/Problems 08-16-2015, 01:40 PM
Replies: 15
Views: 511
Posted By jeepgcoman
Re: 5.7L surging under acceleration...help!

Here's a quote from a post on another Jeep forum by Mike at Diablosport, the tuner manufacturers.

"No, this is where I comment on lost power due to oil contamination in the intake tract/combustion...
Forum: Engine Performance/Intake/Exhaust 08-13-2015, 08:53 PM
Replies: 5
Views: 290
Posted By jeepgcoman
Re: What is causing surging idle in Park/Neutral?

Since this all started when you installed a new TB, I believe you'll need to do a "real" electronic throttle relearn. It'll take a good computerized diagnostic tool to do it correctly though. Just...
Forum: Engine Performance/Intake/Exhaust 07-31-2015, 08:05 PM
Replies: 12
Views: 486
Posted By jeepgcoman
Re: Superchips 3875 advanced transmission tuning help

Although the ATT App. setup looks a little intimidating, it is really no big mystery. The way I started with mine is to identify the things I didn't like about the up/down shifts and the torque...
Forum: Suspension/Brakes/Wheels/Tires 07-02-2015, 10:42 AM
Replies: 3
Views: 360
Posted By jeepgcoman
Re: Bump stops after SRT install

Sure, I'd give it a try.
Forum: Suspension/Brakes/Wheels/Tires 07-01-2015, 11:32 AM
Replies: 3
Views: 360
Posted By jeepgcoman
Re: Bump stops after SRT install

You need the SRT bump stops which are shorter. I had the same problem when I put the Eibach SRT lowering springs on mine. Bottomed out all the time. Since changing them (they came with the spring...
Forum: Engine Performance/Intake/Exhaust 06-29-2015, 02:38 PM
Replies: 13
Views: 1,121
Posted By jeepgcoman
Re: diablo intune

At least the MRE's are better than the old K-Rations we used to have to choke down. Pop corn would have definitely been better too.
Forum: Engine Performance/Intake/Exhaust 06-29-2015, 09:19 AM
Replies: 13
Views: 1,121
Posted By jeepgcoman
Re: diablo intune

X at least 3 on this. A CMR tune for a non-modified or slightly modified Hemi is one of the worst bangs for the buck you can get. If you have a highly modifed (much more than mine....see signature)...
Forum: Grand Cherokee - WK 06-25-2015, 10:35 AM
Replies: 9
Views: 1,280
Posted By jeepgcoman
Re: P73 recall

Amen! I concur with Kman's assessment. You're already into it, and they say that they'll pay for all parts and labor to fix it.......but I am sure not with a bunch of BS and hassle first. And of...
Forum: Audio/Visual/Navigation 06-24-2015, 07:19 PM
Replies: 3
Views: 436
Posted By jeepgcoman
Re: 2005 WK REF Sirius Not Working?

Does the radio have some sort of LED screen that displays stations, time, etc.? If it does, does it come up and say, "Updating Channels"? When it's updating, SOMETIMES mine won't put out sound and...
Forum: Grand Cherokee - WK 06-24-2015, 07:02 PM
Replies: 15
Views: 1,222
Posted By jeepgcoman
Re: N23 Recall Finally Solved?

This whole N23, P73 debacle really irritates me, so here goes. I haven't had any of it done and don't ever plan to. If it ain't broke, don't fix it. In the case of FCA and N23, "if it ain't broke,...
Forum: Engine Performance/Intake/Exhaust 06-19-2015, 10:24 AM
Replies: 10
Views: 692
Posted By jeepgcoman
Re: 6.1 swap

Over about the past six years, I've spent about $6K doing mods. on mine, and have gained nearly 100 more horsepower. Only about half of that was spent on the engine/drivetrain though. My engine was...
Forum: Engine Performance/Intake/Exhaust 06-18-2015, 12:41 PM
Replies: 10
Views: 692
Posted By jeepgcoman
Re: 6.1 swap

I am not familiar with all that needs to be done, but just swapping the PCM won't get it. The 6.1's run the NAG1 transmission and have a separate TCM, whereas the 5.7's have the TCM incorporated into...
Forum: Suspension/Brakes/Wheels/Tires 06-09-2015, 12:38 PM
Replies: 3
Views: 621
Posted By jeepgcoman
Re: Will these tire sizes work with the Quadra drive 2 system?

X2! I've had this setup on mine for about two years now, with no issues.
Forum: Grand Cherokee - WK 05-23-2015, 11:51 AM
Replies: 91
Views: 2,436
Posted By jeepgcoman
Re: Done.

Scott, why don't you just get rid of this troll? He's been on some of the other Jeep forums too, and all he's done from the get go is bitch and complain about his Jeep. Some have told him to go over...
Forum: Troubleshooting/Problems 05-16-2015, 10:53 AM
Replies: 2
Views: 250
Posted By jeepgcoman
Re: CEL- P0420 Need some Advice after Cat replacement....

http://www.motor.com/magazine/pdfs/102006_09.pdf
Forum: Grand Cherokee - WK 05-14-2015, 08:21 AM
Replies: 36
Views: 3,338
Posted By jeepgcoman
Re: Tire pressure sensors 2007 WK

If you have the Premium system a low spare will say it's low on the EVIC readout, but won't show the pressure.
Forum: Grand Cherokee - WK 05-08-2015, 05:56 PM
Replies: 3
Views: 537
Posted By jeepgcoman
Forum: Grand Cherokee - WK 05-08-2015, 10:46 AM
Replies: 2
Views: 354
Posted By jeepgcoman
Re: Towing with SRT springs

I believe the tow rating for the SRT's is based on the hitch, rather than the springs. I have SRT suspension (sways and lowering springs) under my 06 GCO and I can tell you that the ride is firmer...
Forum: Grand Cherokee - WK 05-06-2015, 11:19 AM
Replies: 24
Views: 21,344
Posted By jeepgcoman
Re: So who needs a starscan tool when you can get this....

That's exactly why I haven't messed with some of the stuff either. Won't either, unless I have a problem with one of the systems.
Forum: Grand Cherokee - WK 05-05-2015, 06:38 PM
Replies: 24
Views: 21,344
Posted By jeepgcoman
Re: So who needs a starscan tool when you can get this....

How much are the additional modules for that one? What kind of configuration files does it allow you to make? The DS708 covers all makes and models, European, Asian and American for one price.....no...
Forum: Grand Cherokee - WK 05-05-2015, 11:36 AM
Replies: 24
Views: 21,344
Posted By jeepgcoman
Re: So who needs a starscan tool when you can get this....

I see this is a pretty old thread but, since then, there is newer/better computerized diagnostic scanners available. I got tired of just being able to read and clear codes and wanted something that...
Forum: Engine Performance/Intake/Exhaust 05-03-2015, 06:54 PM
Replies: 1,304
Views: 84,203
Posted By jeepgcoman
Re: 3.7l performance love

Jeff, I think you need to get a shift kit for that NAG1. Sounded like some pretty sloppy shifts. And, while you're at it, get a Mercedes pan to put on the tranny too. It'll make the fluid/filter...
Forum: Grand Cherokee - WK 04-30-2015, 09:33 AM
Replies: 6
Views: 1,076
Posted By jeepgcoman
Re: Another reason NOT to take your vehicle to the stealer

I am sure some stealers would love to take your new SRT for a test drive. Bet it's a hoot to drive, but I wouldn't care for the payments and insurance costs. I know if I had yours, for sure it would...
Forum: Grand Cherokee - WK 04-29-2015, 04:32 PM
Replies: 6
Views: 1,076
Posted By jeepgcoman
Another reason NOT to take your vehicle to the stealer

......especially if you have it modded.

Dealership employee joyride in customer car caught on dash cam...
Forum: Troubleshooting/Problems 04-22-2015, 08:53 PM
Replies: 2
Views: 238
Posted By jeepgcoman
Re: Bad fuel economy

Since this ia a "new to you" vehicle, have you verified/insured that all the service requirements are current and the correct spark plugs and oil are in it? If not, that should be the first order of...
Forum: Engine Performance/Intake/Exhaust 04-21-2015, 10:22 AM
Replies: 14
Views: 988
Posted By jeepgcoman
Re: I hate how my Jeep shifts

Thanks for your wisdom, Frank. I'll be picking up valve body shift kits for both my vehicles and install them at next fluid/filter change.....both will cost less than $150 US. I was unaware of the...
Forum: Engine Performance/Intake/Exhaust 04-19-2015, 06:17 PM
Replies: 14
Views: 988
Posted By jeepgcoman
Re: I hate how my Jeep shifts

Frank, do you think reducing the TM helps any? A hundred years ago when I worked on automatics, they were all totally hydraulically controlled with throttle pressure linkage instead of vacuum...
Forum: Engine Performance/Intake/Exhaust 04-19-2015, 06:05 PM
Replies: 86
Views: 4,441
Posted By jeepgcoman
Re: SRT exhaust manifold install today!

Hey Luke, did you ever get your ride back from the body shop? How is it working now with the headers?
Forum: Engine Performance/Intake/Exhaust 04-19-2015, 02:25 PM
Replies: 14
Views: 988
Posted By jeepgcoman
Re: I hate how my Jeep shifts

Yes, it should help extend the life of the transmission, if you do regular services and address any irregularities as soon as you detect them. What the booster does is increase the line pressure by...
Forum: Engine Performance/Intake/Exhaust 04-19-2015, 11:40 AM
Replies: 14
Views: 988
Posted By jeepgcoman
Re: I hate how my Jeep shifts

It's been about 5 years since I installed mine, and I did not remove the tune. I do remember that it worked like crap for almost a week until the PCM/TCM figured out what was going on. Ever since...
Forum: Engine Performance/Intake/Exhaust 04-18-2015, 09:53 AM
Replies: 14
Views: 988
Posted By jeepgcoman
Re: I hate how my Jeep shifts

You've sure got that right. The best way I've found to fix it, without tearing down the transmission, is to add the Sonnax Line Pressure Booster and purchase a Superchips Tuner with the Advanced...
Forum: Troubleshooting/Problems 04-15-2015, 07:34 PM
Replies: 4
Views: 416
Posted By jeepgcoman
Re: Transmission Temperature PID

On my LX with the NAG1 the engine and trans. temps are the same (using my DashHawk) until you put it in gear. Then it reads the trans. temp. accurately. On my WK with the 545RFE, the DashHawk readout...
Forum: Grand Cherokee - WK 04-14-2015, 04:01 PM
Replies: 2
Views: 476
Posted By jeepgcoman
How to trash $200K of cool cars.

Now, this is the type of job I want. I'd probably even take any or all of the vehicles after they're done trashing them. Kind of a waste though.

Dodge performance trio thrashed on Roadkill...
Forum: Troubleshooting/Problems 04-14-2015, 11:34 AM
Replies: 2
Views: 263
Posted By jeepgcoman
Re: Nag1 722.6 Conductor Plate

Here's the video: https://www.youtube.com/watch?v=pl55H5sxmUc

And, I found a conductor plate on EBay for about $150 U.S.
Forum: Troubleshooting/Problems 04-14-2015, 11:29 AM
Replies: 2
Views: 263
Posted By jeepgcoman
Re: Nag1 722.6 Conductor Plate

I don't know about where to find the conductor plate, but someone on one of the Jeep forums posted a youtube video on how to replace it. I think it may have been a Mercedes shop's video. You may want...
Forum: Grand Cherokee - WK 04-12-2015, 10:02 AM
Replies: 29
Views: 6,513
Posted By jeepgcoman
Re: Switching to Synthetic Oil in High Mileage Engine

Like I said in my Post No. 23, with 253+K miles, it may be time to start thinking about some major engine work if you plan to keep the vehicle. For sure it's time to have someone that is...
Forum: Grand Cherokee - WK 04-10-2015, 07:52 PM
Replies: 29
Views: 6,513
Posted By jeepgcoman
Re: Switching to Synthetic Oil in High Mileage Engine

If you've been running synthetic forever, the innards of the engine are probably looking really good. It is possible that the dino. oil has gummed something up and, if it's a fairly high pitched...
Forum: Grand Cherokee - WK 04-10-2015, 11:15 AM
Replies: 29
Views: 6,513
Posted By jeepgcoman
Re: Switching to Synthetic Oil in High Mileage Engine

I would think that at 253K+ miles you'd probably be needing a heavier oil. What weight oil were you running with the synthetic? 5W30 seems a little light to me. Can you tell where the knock is coming...
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