Having problems with your 1999 Plymouth Voyager ?

Does a noisy cad converter cause engine to run rough at idle only? I changed the plugs, removed the fuel inj. and cleaned them. I replaced the water pump so the timing could be off but I clamped the overhead cam gears so they would not move out of place when I did the water pump work. So now, it runs rough at a light but runs fine at driving speeds. It starts good cold but drive around and shut off a few minutes then start again, It then becomes very hard to start. The engine is not hot running

Posted / edited by AnonymousUser on : 16-07-2018

Answers :

One of the reasons converters can get noisy is ceramic coming loose. If that happens, they tend to plug. But that is worst at high speed, not idle.

Clamping the cam gear is not the way to keep cam timing.
Because you may have allowed the slack to get on the wrong side of the idler.
You should always line up the timing marks and cam marks.
Then after 1 complete revolution by hand, you can see if it is off one notch, because of the slack.

The rough running and hard starting could all be normal once the valve timing is off one notch, because the timing will be off. You need to check it again. Only this time look at the diagram in a manual. It is not that hard.

No, the cat has nothing to do with idle, even if it failed it will only give problems if it fell apart and clogged the system and in that case you wouldnt have any top end power.
\015\012As far as why its running rough or getting hot fast someone will need to look at *** to make sure you didnt mess up but the hot issue shouldnt have anything to do with maybe having the timing off.
Repair Help & Product Troubleshooting for 1999 Plymouth Voyager

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