Mechanics

READING CODES PO340 AND PO300

1998 Suzuki Sidekick • 15,300 miles

98 sidekick automatic 4x4 idle surges up and down when cold and levels off to a stall out after warm and runs rough and can not drive or it wont go fast enough.I replaced o2 sensors as it needed them for a good while, than the maf and after that a few days it started rough idle, my cat was not even a year old. Now I hear a rattle sound in it like something is bounceing around in it. When I rev the motor it revs good just wont idle right and in drive has no pick up just boggs. Thanks for any help you can spare. Mj
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Zuky
August 27, 2012.



So do you have battery voltage on that wire I asked you about with the key in the run position?

Saturntech9
Sep 16, 2012.
Yes

Tiny
Zuky
Sep 16, 2012.
So you said the iac works when putting power and ground to it?

Saturntech9
Sep 16, 2012.
Yes while holding it in my hand power right off battery

Tiny
Zuky
Sep 16, 2012.
Also test drove it a couple miles and No cel

Tiny
Zuky
Sep 17, 2012.
Have you checked for vaccuum leaks?

Saturntech9
Sep 17, 2012.
Yes ever since this car started giveing me trouble, Iv sprayed carb cleaner around trying to check

Tiny
Zuky
Sep 17, 2012.
Im wondering if this idle problem could be a timeing issue? I did try timeing it with lite and it is off the proper mark of 4-6 degrees, I copied this from suzuki forum

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When your valves are timed properly, your compression should be in the area of 190psi on all cylinders. So timing is off. As Rhino says, check the crank keyway to see if it is sheared (although crankbolt torque - which should be 94 ft/lbs, was normally not an issue after 1996). Timing belt is timed to cylinder #4 firing, with the crank key at 12: 00 and the cam key at 6: 00. Then ignition timing is set to cylinder #1 firing. Check your timing.

Tiny
Zuky
Sep 17, 2012.
So is your timing belt timing belt timing correct along with your timing checking it with a timinh light?

Saturntech9
Sep 17, 2012.
I will look at that too, I also found that my throttle cable is touchy, meaning that when I move it the idle gos up and wont come down untill I push the throttle back down, so it is getting replaced

Tiny
Zuky
Sep 18, 2012.
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