2004 Isuzu NQR Noise

KELLEE40

MEMBER
2004 ISUZU TRUCK
4 CYL
2WD

I have a 2004 Isuzu nqr. It runs fine on flat land but when going up hill, it starts to make a loud shuttering noise. It sounds like an old manual transmission when its not quite in gear and you let the clutch out. Like if a clutch on a manual trans. Was put in backwards and the sound of the springs rubbing up against the crankshaft bolts. I don't want to think I need a new trans. I am hoping it is something simple. Does anyone know what it could be? Help! I have a job starting really soon up in the Hollywood hills and I can't afford to have my truck be out of commission. Thanks, Mike

4HE1TC engine
AISINAW450 transmission

4 Replies

FIXITMR

MECHANIC
9,990 POSTS

Is this the box van? Have your drive shaft/uni joints/carrier bearings checked out.

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Tuesday, November 23rd, 2010 AT 8:54 PM

FIXITMR

MECHANIC
9,990 POSTS

Here's a workshop manual. http://www.onlinefreeebooks.net/automotive-machinery-power-equipment-ebooks/isuzu/isuzu-n-series-elf-workshop-manual-pdf.html

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Tuesday, November 23rd, 2010 AT 9:08 PM

FIXITMR

MECHANIC
9,990 POSTS

Here's driveshaft pic from manual

Image (Click to make bigger)

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Tuesday, November 23rd, 2010 AT 9:23 PM

KELLEE40

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2 POSTS

The chassy has a utility box mounted on it. The drive shaft, hand break, trans. Tail shaft all checked out perfectly. It only does when I start going up a hill. HORRIBLE NOISE! I immediately left off the gas. Not sure what would happen if I just kept excellerating. Sounds almost like a manual trans. Slipping out of gear.

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Wednesday, November 24th, 2010 AT 4:16 PM