3VZE runs rough & misses
#1
3VZE runs rough & misses
Just completed the timing belt job on my 1990 3VZE. It now runs rough after it warms up, from idle to about 2500 rpm. All the timing marks were lined up, so I am confident that the belt is set on the correct gears. I also replaced the plugs, wires, cap & rotor.
The timing was around 5 deg. but I set the timing back to 10deg with the jumper in place. It idleing around 500 rpm after warm-up.
Could this be the TPS? I have read other posts about it, but I dont know how to adjust it. Any ideas/suggestions?
The timing was around 5 deg. but I set the timing back to 10deg with the jumper in place. It idleing around 500 rpm after warm-up.
Could this be the TPS? I have read other posts about it, but I dont know how to adjust it. Any ideas/suggestions?
#4
I pulled the line off the EGR...nothing. Ran the same.
I tried unplugging the TPS, and the idle cam back up, and no more miss!
What does this mean...is the TPS bad, out of adjustment? Can I drive the truck without the TPS plugged in?
I tried unplugging the TPS, and the idle cam back up, and no more miss!
What does this mean...is the TPS bad, out of adjustment? Can I drive the truck without the TPS plugged in?
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#9
I'm 99% sure the timing marks were dead on. 1 tooth either way would have been way off.
Just took the truck for a LONG test run. Started spitting really bad on the highway, no power either.
Pulled in the driveway..and the cat is glowing RED. Is this a bad cat converter????
Just took the truck for a LONG test run. Started spitting really bad on the highway, no power either.
Pulled in the driveway..and the cat is glowing RED. Is this a bad cat converter????
#12
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A glowing cat means that your getting waaaaaaaaaaay too much fuel, probably because your missingso bad. Now that your cat has been over heated, it would be a good idea to check it out. Remove the exhaust before the cat and start it up, if the problem goes away then you have a plugged cat. But usually your truck would be mis firing before hand to gunk up the cat. Id check your timing marks just to be sure, but a faulty TPS is another likely story. Also could be a stuck open or leaking fuel injector.
Last edited by yota_krazy; 11-09-2006 at 07:39 PM.
#13
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I'm 99% sure the timing marks were dead on. 1 tooth either way would have been way off.
Just took the truck for a LONG test run. Started spitting really bad on the highway, no power either.
Pulled in the driveway..and the cat is glowing RED. Is this a bad cat converter????
Just took the truck for a LONG test run. Started spitting really bad on the highway, no power either.
Pulled in the driveway..and the cat is glowing RED. Is this a bad cat converter????
Do a compression check and/or record your engine vacuum at idle. Post up the results.
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