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Timing belt help

 
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Old 16 May 2012, 09:14 pm
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Default Timing belt help

Just replaced the timing belt for a friend of my wife. Starts a little hard, but idles ok. SUrges and misses at about 2,200rpm. Have double check everything and redone it 5 times. Talked with a dealer today and they said the exhaust cam was a half tooth off. How do you compensate for half a tooth. Getting very frustrated.
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Old 16 May 2012, 09:26 pm
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Default Re: Timing belt help

From what I've read a couple dozen times, you'll be doing it all over again for the 6th time. There's no other way. Getting the gears lined up is the hardest part of the whole job.
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Old 16 May 2012, 09:32 pm
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Default Re: Timing belt help

Quote:
Originally Posted by helio400 View Post
Just replaced the timing belt for a friend of my wife. Starts a little hard, but idles ok. SUrges and misses at about 2,200rpm. Have double check everything and redone it 5 times. Talked with a dealer today and they said the exhaust cam was a half tooth off. How do you compensate for half a tooth. Getting very frustrated.
You don't, go a full tooth. It's in your timing marks. the hard start classic sign of timing off. Also if you had the cam pulleys off be sure they were tight and didn't shear the line up pins.
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Old 19 May 2012, 03:14 pm
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Default Re: Timing belt help

Ok, I thought I had it right. Found a thread with pics and my marks were identical. Cam marks line up with the crank mark on the mark. Put it back together and ran it accross the street to an electrical guru. Pulled the codes. One code. Cam sensor. (It was running funny before the waterpump issue) Replaced the cam sensor. Ran like a charm...for a day. Now back to the won't go over 2,500rpm and has little power. Now I'm really stumped. I heard that PTs only like OEM sensors. Any truth to that?
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Old 19 May 2012, 04:32 pm
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Default Re: Timing belt help

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Originally Posted by helio400 View Post
I heard that PTs only like OEM sensors. Any truth to that?
Yup they do! They fling codes at you that translate to "Oi you should have bought a chrysler sensor buddy! I don't like aftermarket stuff!" or at least thats what mine said when I tried to save some money on o2 sensors! Had to bite the bullet.
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Old 31 May 2012, 12:15 pm
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Default Re: Timing belt help

Still working on the PT Cruiser from hell. Nailed down the no strt issue to the MAP sensor. Installed an OEM one. Starts and runs, but misses/rough idle. Goes away at about 1,000rpm with no load. Drive it around and the miss is throughout the rage. Detect a little backfire once in a while. Almost seems like the timing is off. Could the timing have jumped? Seems with a new belt this wouldn't be. Ran great when I left it. Can't get it to throw any codes either. Tried disconnecting the cam sensor. Same rough idle and miss. Really strting to not like this car.
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Old 31 May 2012, 12:24 pm
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Default Re: Timing belt help

check compression bent valve ?
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Old 31 May 2012, 01:04 pm
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Default Re: Timing belt help

It's always a possibility, but the timing would have to be 180deg off for the valves to hit. It was running fine after timing belt replacement. The missing started after replacing the MAP sensor. Of course it didn't run at all with the bad MAP sensor. I had already checked the plugs. The gap was huge. abot .090, so I gaped the 2 I could get to w/o removing the intake. I never thought about checking plug wires. I could have broken one doing the plugs. They are old. 87k on them. That's the only obvious thing I can think of.
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Old 31 May 2012, 01:27 pm
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Default Re: Timing belt help

If there the oem wires then I'm sure they need replaced. Oem wires don't last long. I think I read somewhere only like 20k. Not saying that's your problem but they need to be replaced anyways.
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Old 31 May 2012, 01:48 pm
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Default Re: Timing belt help

backfire i would suspect wires on wrong or bad check those other plugs for sure
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