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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: CBTracker on February 08, 2005, 06:34:30 AM

Title: Powerloss 1500rpm
Post by: CBTracker on February 08, 2005, 06:34:30 AM
Ever since I got my tracker, theres been a slight loss of power when I get to 1500rpm. This is most apparent on cooler days but I drive a standard so it's pretty picky on the clutch action. Any suggestions as to what would cause it? It's only in the 1500-1600 rpm range, and after 1st gear its less apparent in 2nd, and no one drives in 3rd in that range without stalling so.. anywho any ideas or possible answers would help. thanks in advance. ???
Title: Re: Powerloss 1500rpm
Post by: TomKat on February 08, 2005, 06:35:50 AM
I had that issue a while back, turned out to be an O2.
Title: Re: Powerloss 1500rpm
Post by: Bobzooki on February 08, 2005, 06:42:04 AM
Try to avoid that RPM range?  ???
Title: Re: Powerloss 1500rpm
Post by: adamd on February 08, 2005, 06:44:32 AM
Quote
Try to avoid that RPM range?  ???


Do they make 18 speed tranny's for sidekicks?
Title: Re: Powerloss 1500rpm
Post by: Bobzooki on February 08, 2005, 06:54:01 AM
Quote


Do they make 18 speed tranny's for sidekicks?


Well, Nate & Heather have a 20 speed!
Title: Re: Powerloss 1500rpm
Post by: adamd on February 08, 2005, 06:58:36 AM
Quote


Well, Nate & Heather have a 20 speed!



Problem solved. Next issue.

~Zukiworld Mechanic Staff
Title: Re: Powerloss 1500rpm
Post by: 3wheelerdude on February 08, 2005, 07:58:47 AM
I have the same problem but its around 2500 to 2800, mostly in fourth gear. Its almost as if its got less torque at that right exact spot.........wierd.
Title: Re: Powerloss 1500rpm
Post by: hcgalvin on February 08, 2005, 08:07:16 AM
Quote


Well, Nate & Heather have a 20 speed!



Hahaha..

20 forward gears and 4 reverse gears. You're close.

But it takes 3 sticks to do it.

I guess technically there's 5 more if you consider 4 hi another set of gears..

;D
Title: Re: Powerloss 1500rpm
Post by: mrfuelish on February 08, 2005, 08:08:29 AM
Could be spark plugs !
Title: Re: Powerloss 1500rpm
Post by: mahimahimo on February 08, 2005, 08:20:20 AM
20 spd?          im a little confused ??? ??? ??? ???
Title: Re: Powerloss 1500rpm
Post by: hcgalvin on February 08, 2005, 08:34:28 AM
I'll explain:

2HI
1,2,3,4,5

4HI
1,2,3,4,5

Regular 4LOW
1,2,3,4,5

LOW 4.24
1,2,3,4,5

LOW+LOW 4.24
1,2,3,4,5

Reverse

2HI 1
4HI 1
4LOW 1
LOW 4.24 1
LOW+LOW 4.24 1

OK, so 25 forward gears, and 5 reverse gears.
Title: Re: Powerloss 1500rpm
Post by: whitfield on February 08, 2005, 10:38:21 AM
A failing crank pulley Keyway will show as a loss of power below 3k rpms.  More noticable when cold.  A sure way to tell would be to check the truck with a timing light.  If the timing mark is jumping around , not sitting steady at a consistant place or looks to be out of time (I forget the correct # of Degrees).   Then I would look for a bad pulley / keyway.

Just my most recent issue.  Hope yous is simpler.
Title: Re: Powerloss 1500rpm
Post by: 3wheelerdude on February 08, 2005, 11:52:12 AM
what exactly is a bad pulley/keyway? any other way than with the timing light to check it, unfortunately I dont own a light.
Title: Re: Powerloss 1500rpm
Post by: 90Stomper on February 08, 2005, 12:33:11 PM
Quote
A failing crank pulley Keyway will show as a loss of power below 3k rpms


thought i was the only one to have this prob!

Quote
what exactly is a bad pulley/keyway? any other way than with the timing light to check it, unfortunately I dont own a light


it is the pully on the top front of the motor that is on the end of the cam shaft, under that black plastic cover in the front.  you could undo a few bolts and pull it back a bit and see if you can see the center keyway is messed up or not.
Title: Re: Powerloss 1500rpm
Post by: mrfuelish on February 08, 2005, 12:57:38 PM
prob. talking bout the lower pulley.
Title: Re: Powerloss 1500rpm
Post by: mperry on February 08, 2005, 02:15:51 PM
Quote
I had that issue a while back, turned out to be an O2.


I dumped bucks into mine... including replacing the O2 sensor. The shop (after 3 weeks, every day) finally found it... an O2 sensor.

They say they've seen some of the aftermarket units fail... so recommend Bosch, since no one would pay the price the dealer wants. <g> BTW, mine mostly did it when it was cold, at first... then it started missing... then you could sometimes feel it when warm.
Title: Re: Powerloss 1500rpm
Post by: whitfield on February 08, 2005, 03:30:55 PM
Yep,  Lower CRANK PULLEY.   Most of them wobble when worn.  It is often a sure sign of damage or impending damage.  You can often just look down at the belt while it is running.  


This method is not accurate, as the run out on a belt pulley is not as exact as that on the T-belt / crank.  

But the loss motion / movement is amplified by looking at the larger serpentine belt crank pulley.  If it looks wobbly then tear it down & check it.  Lock tite the crank bolt on reassembly
Title: Re: Powerloss 1500rpm
Post by: CBTracker on February 11, 2005, 06:34:46 AM
sounds like this is a  fairly common problem, too bad zuki didn't do anything to correct it, well thanks for al  the ideas. OH, I'm almost done my lightbar for a soft top, just gotta straighted the lights and add some paint, I'll post pics when done.