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Old September 23rd, 2014, 06:05 AM   #1
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Default Montero trail rig/family hauler

I recently purchased my new rig from a friend. As of right now, it is basically stock, other than the wheels/tires. I don't plan on any major drive train modifications as of right now. It came from the dealership with the winter package, which includes a rear air locker, center locker, heated seats, remote start, and headlight squirters. The tires are 31x10.5 Mastercraft Courser A\T 2's on unknown brand rims. It seats 7, so plenty of room for the family(my wife, 3 kids, and myself) for a day on the trails or dunes.



It runs smooth, with no ticks, but it lacks the power it should have. There is almost no low end torque right now. I have been slowly troubleshooting it, but time and budget are very limited right now. The driver side exhaust manifold is cracked and needs to be replaced. This may have something to do with the lack of power. Any other ideas are welcome. It has a new fuel filter and a new catylitic converter, so those don't seem to be the issue.

Future plans (after I get it running strong) include:

Removal of the running boards, possibly replacing with sliders
Remove the rocker rust and replace the gray "graphics" with bedliner
Replace the grill section just above the skid plate(protect the radiator from flying debris)
Either 2" suspension lift and maybe some trimming to clear 35's or stock height and slight front bumper trimming to clear 33's (not sure yet)
Tube bumpers to eliminate any need for trimming and for a better departure angle
Winch
On board air

Last edited by ljense8; September 23rd, 2014 at 08:54 AM.
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Old September 23rd, 2014, 03:28 PM   #2
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Check your engine codes - also try to see what your fuel trims are.
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Old September 23rd, 2014, 03:36 PM   #3
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No codes. Will have to check fuel trims. I do plan on a thorough tuneup, including injectors, but I will need 6 injectors at about $90 each. Not cheap.
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Old September 23rd, 2014, 06:34 PM   #4
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Fuel trims looked decent on a short test. Next time I get out for a longer drive I will log my long term trims and see how they look. That should tell me more than just idling in the driveway.
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Old September 23rd, 2014, 07:06 PM   #5
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I really like that truck! Nice find.
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Old September 23rd, 2014, 07:35 PM   #6
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Thanks
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Old September 23rd, 2014, 09:20 PM   #7
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Added a bracket to the front bumper for easy on/off with the dune flag. It also serves a dual purpose of covering up a couple ugly holes in the front bumper until I can get a replacement.
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Old September 24th, 2014, 11:32 AM   #8
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Weird - no codes. That's a 3.5L right? Is it a DOHC or SOHC motor ( I forget)? IIRC, you should have decent torque.
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Old September 24th, 2014, 01:14 PM   #9
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It is a 3.5, I believe DOHC, and yes it should have good torque. That is the problem. I don't expect it to be a race car, but it is extremely sluggish in the low end and smooths out around 4k rpm.
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Old September 24th, 2014, 01:17 PM   #10
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I'll have to confirm whether DOHC or SOHC. It is supposed to have right around 200 HP and 200 ft/lbs torque. It feels like maybe 1/3 to 1/2 of the power is missing. I doubt it has the ability to spin the tires in loose gravel.
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Old September 26th, 2014, 05:50 PM   #11
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Update: Bank 1(I believe driver side) fuel trim seems to be trending high. This is the side with the leaking exhaust manifold. After I fix the manifold, I will check again and see how it looks.

Also, I got my homemade grill installed on the skid plate. Sorry for the poor quality picture.
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Old October 8th, 2014, 05:43 PM   #12
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Got the running boards removed today. It looks better and should help with center clearance a bit.

Before:



After:

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Old October 8th, 2014, 06:09 PM   #13
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Sweet. Those rims are akuza's by the way. Used to have them on my truck. Discontinued now I think...
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Old October 8th, 2014, 07:22 PM   #14
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Much better. Looks and clearance.
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Old October 8th, 2014, 07:27 PM   #15
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Quote:
Originally Posted by caleb24v View Post
Sweet. Those rims are akuza's by the way. Used to have them on my truck. Discontinued now I think...
Nice. Thanks. I was hoping some day to figure that out so I can find a match for my spare.
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Old October 8th, 2014, 07:28 PM   #16
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Quote:
Originally Posted by jbsjunk View Post
Much better. Looks and clearance.
Agreed. Thanks.
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Old October 9th, 2014, 07:27 PM   #17
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Exhaust leak fixed. Seems to be a little better. I think a thorough tuneup and possibly an upstream O2 sensor will work wonders.
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Old October 11th, 2014, 08:35 AM   #18
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Had some fun last night. Got a little stuck. I've decided I'm not all that impressed with my current tires in mud. I also need a winch.


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Old October 11th, 2014, 09:32 AM   #19
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Dog isn't sure what to think.
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Old November 2nd, 2014, 10:40 PM   #20
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Took a trip to Allegan woods a few weeks ago and apparently never posted any pics, so here they are. Nothing too challenging, but a good shakedown to point out what still needs attention.

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