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  #109  
Old 06-30-2013, 08:44 PM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

my air daM COMMITED SUICIDE AT 61350 MILES
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  #110  
Old 08-31-2013, 01:12 PM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

No one has mentioned the faulty plastic inner door handles that crack or break. Not sure the year range affected, but mine is a 2005 jeep grand cherokee limited. Plenty of posts and youtube videos on the subject. Oh and if you have this problem, please go to https://www-odi.nhtsa.dot.gov/ivoq/ and file a complaint. Me and others believe its a safety issue. Jeep needs to do a recall on them.
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  #111  
Old 12-25-2013, 01:40 PM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

Marlin, have you ever run across the issue, on the 3.7, of Bank 1 running rich and Bank 2 running lean (both sensor 1)? I would rather not take it to the dealer and pay both arms and a leg. They already told me that it isn't a computer problem (but i have 114000 miles), any ideas?
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  #112  
Old 01-07-2014, 08:12 AM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

Hi buddy. Sorry for the tardy reply but although I'm not too familiar with the 3.7, my first thought is a dead oxygen sensor on one bank.
If you've already repaired it please let us know your fix!
Cheers,
Ben
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  #113  
Old 01-29-2014, 10:38 PM
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Re: Wk/Wh 2005~ Grand Cherokee Common Faults And Issues

Quote:
Originally Posted by Marlin View Post
Updated with;

5.7

- 05-07 models have delay issues with electronic throttle. Dealer rplaced MAP sensor on inlet manifold and installed updated throttle pedal (requires wiring modifications as it's a new design). Can report it is much better now. Will reconfirm in 1 month.
I hate my 2007 limited Hemi. Big delay when Jeep is rolling and you hit pedal. Is updated throttle pedal a Jeep dealer item? my dealers play dumb. Also too much 4 clylinder drop out. Do the after market reprogramming updates fix that. Don't need a race car, but bought the hemi for fun driving.
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  #114  
Old 01-29-2014, 11:35 PM
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Quote:
Originally Posted by Joe S. View Post
I hate my 2007 limited Hemi. Big delay when Jeep is rolling and you hit pedal. Is updated throttle pedal a Jeep dealer item? my dealers play dumb. Also too much 4 clylinder drop out. Do the after market reprogramming updates fix that. Don't need a race car, but bought the hemi for fun driving.
Or buy a sprintbooster modual
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  #115  
Old 02-21-2014, 12:58 AM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

I have an 05 Jeep Grand Cherokee 5.7. I have replaced the starter 4 times and the last one was an after market.

Premium Radio with Nav, 6 disc, and Sat - started turning of the screen and the programmed buttons on the radio work but the ones on the steering wheel don't. It seems to happen when the vehicle gets warm.
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  #116  
Old 04-02-2014, 09:20 AM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

I'm averaging 14 MPG on the highway.
Replaced/checked: O2 sensors, PCV valve, MAP sensor, plugs, coil packs, cleaned throttle body, fuel trims may be an issue but it's not obvious.
Can't find the port to check fuel pressure, appears to be fine on my Torque app but don't know where that reading is taken from.
And now struggling with the N23 recall issues LOL
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  #117  
Old 04-02-2014, 10:58 AM
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Re: Wk/Wh 2005~ Grand Cherokee Common Faults And Issues

Quote:
Originally Posted by Joe S. View Post
I hate my 2007 limited Hemi. Big delay when Jeep is rolling and you hit pedal. Is updated throttle pedal a Jeep dealer item? my dealers play dumb. Also too much 4 clylinder drop out. Do the after market reprogramming updates fix that. Don't need a race car, but bought the hemi for fun driving.
In many cases I don't think the dealers are "playing dumb"......they are.

A Superchips Tuner will get rid of the throttle lag and some of the MDS drop out. On mine, with my mods., I'll get 90%+ MDS "ON" time on the highway, and in town (depending on amount of stop and go) I'd guess I get ~60-75% "ON" time.
One of the biggest factors to keep the MDS on is engine load, so if you have bigger tires, a lift, excessive drivetrain drag, poor engine tune, etc., you'll have much less MDS on time. Also, make sure you're using a good 5W-20 synthetic oil in the engine.
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  #118  
Old 04-02-2014, 11:19 AM
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Re: Wk/Wh 2005~ Grand Cherokee Common Faults And Issues

Quote:
Originally Posted by jeepgcoman View Post
In many cases I don't think the dealers are "playing dumb"......they are.

A Superchips Tuner will get rid of the throttle lag and some of the MDS drop out. On mine, with my mods., I'll get 90%+ MDS "ON" time on the highway, and in town (depending on amount of stop and go) I'd guess I get ~60-75% "ON" time.
One of the biggest factors to keep the MDS on is engine load, so if you have bigger tires, a lift, excessive drivetrain drag, poor engine tune, etc., you'll have much less MDS on time. Also, make sure you're using a good 5W-20 synthetic oil in the engine.
What would cause excessive drive train drag?
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  #119  
Old 04-02-2014, 03:09 PM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

Dragging brakes (caliper problem), low tire pressures, incorrect/tired fluids in diffs/xfer case, transmission issues, etc.

Matt, if you're only getting 14 mpg on the highway, something is wrong. That is about 3-5 mpg less than a "normal" stock Hemi. I get 22-23 mpg all day long (high of 24.4) with mine the way it is set up. Did you ever get the O2's replaced? I remember you were having problems getting them out. I think I'd check the easy/obvious things first:

1. Tire pressures and conditions of tires....correct tire size
2. Proper alignment
3. Verify odometer is reading correctly. Use a GPS if possible.
4. Experiment with various brands/octanes of fuel
5. Verify engine RPM at 65 mph (or so) is correct. Should be ~1800-1900 RPM.
6. Do a "coast down" test. As heavy as these are, you should still be able to coast quite a distance, say from ~40 mph in neutral. If it stops in just a couple hundred feet, there may be a problem. I think you'd also feel if it seemed like something was holding it back.
7. Exhaust leaks. Take it to a good muffler shop and have them check for leaks before the front O2 Sensors.....exhaust ports (manifold/"Y" piple connections) to the sensors. Also have them check for exhaust system restrictions all the way back. A good place should be able to do a backpressure test. They'll especially do this to the catalytic converters to check if they're restricting flow.
8. Is the MDS working properly? Correct synthetic 5W-20 oil?

Did you put stock type ignition coils back on it, or get something like MSD's or SOS coils? I use SOS coils with .060 in. spark plug gaps on mine....noticeable big difference in idle quality (smoothness), starting, and general operation. What brand/type spark plugs did you install? Did you replace, or just check the MAP Sensor? Is your in town fuel ecoomy about normal....11-14 mpg? What were the short and especially the long term fuel trims like?
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  #120  
Old 04-02-2014, 03:49 PM
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Re: Wk/Wh 2005~ Grand Cherokee Faults And Issues

1. Tire pressures and conditions of tires....correct tire size
Excellent but I'm running 255/75R18 off my JK. The fuel problem has been there since I bought it last year. I put these wheels on only a few months ago and it has not changed one bit with them on.

2. Proper alignment
Drives straight but wheels squeal at full turn on pavement.

3. Verify odometer is reading correctly. Use a GPS if possible.
Verified

4. Experiment with various brands/octanes of fuel
No difference between 87 and 89.

5. Verify engine RPM at 65 mph (or so) is correct. Should be ~1800-1900 RPM.
That's about right

6. Do a "coast down" test. As heavy as these are, you should still be able to coast quite a distance, say from ~40 mph in neutral. If it stops in just a couple hundred feet, there may be a problem. I think you'd also feel if it seemed like something was holding it back.
Drift down is good but I can feel something holding it back while driving, steering is extra heavy, I can feel the front wheels working, maybe some is normal with an all wheel drive like this. Like I said wheels squeal at full turn on pavement.

7. Exhaust leaks. Take it to a good muffler shop and have them check for leaks before the front O2 Sensors.....exhaust ports (manifold/"Y" piple connections) to the sensors. Also have them check for exhaust system restrictions all the way back. A good place should be able to do a backpressure test. They'll especially do this to the catalytic converters to check if they're restricting flow.
I can't find any leaks. Will take it to someone.

8. Is the MDS working properly? Correct synthetic 5W-20 oil?
Correct oil and I think it works I've yet to install the light though.

9. Did you put stock type ignition coils back on it, or get something like MSD's or SOS coils? I use SOS coils on mine....big noticeable difference in idle quality (smoothness), starting, and general operation. What brand/type spark plugs did you install? Did you replace the MAP Sensor? Is your in town fuel ecoomy about normal....11-14 mpg? What were the short and especially the long term fuel trims like?
This was all done by the dealer except the MAP I did that, they were fixing the stalling issue and replaced plugs, coils and computer. In town fuel is at 8.5 MPG. The fuel trims were mostly normal except when coasting I think they were high. Going to get new fuel trim readings tonight, going on a long (250 m) trip.

I have a flashpaq and tuned it for economy with 87 yesterday and will see if that helps on my trip.
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