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Overheat and Won't Start

 
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Old 15 May 2016, 07:54 am
Young Cruiser
 
Join Date: Mar 2015
Location: Liberty MO
Posts: 91
Default Overheat and Won't Start

Sure this has been discussed at length before, but scouring all the threads is almost as much of a headache as tearing the car down. That said...

Bought a 2001 Ltd (107k/1 owner) last week that reportedly overheated about 6 months ago and was seemingly okay until a few weeks back when it died. Previous owner's (PO) shop says engine is shot. I'm not so sure.

I'm thinking something else failed since the overheat - related or not.

Engine cranks, but does not start. PO302 is the only stored code. Sounds like compression is there on at least two cylinders.

I shot some starting fluid into the TB to see if it might kick, but nada. That's as far as I've gone.

Certainly there is a logical diagnostic starting point for something like this.

I'd like to make sure it fires before I determine if it needs to be torn down.

Thoughts?
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Old 15 May 2016, 08:08 am
Senior Cruiser
 
Join Date: Jan 2014
Location: SW PA
Posts: 1,336
Default Re: Overheat and Won't Start

Quote:
Originally Posted by RCSnyder View Post
Sure this has been discussed at length before, but scouring all the threads is almost as much of a headache as tearing the car down. That said...

Bought a 2001 Ltd (107k/1 owner) last week that reportedly overheated about 6 months ago and was seemingly okay until a few weeks back when it died. Previous owner's (PO) shop says engine is shot. I'm not so sure.

I'm thinking something else failed since the overheat - related or not.

Engine cranks, but does not start. PO302 is the only stored code. Sounds like compression is there on at least two cylinders.

I shot some starting fluid into the TB to see if it might kick, but nada. That's as far as I've gone.

Certainly there is a logical diagnostic starting point for something like this.

I'd like to make sure it fires before I determine if it needs to be torn down.

Thoughts?
Take off the cam position sensor and see if the magnet turns, its attached to the cam, when you try to start it. If it does not turn, timing belt either lost cogs (teeth) or is broken.
Either way it was due at 90,000-100,000.
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Old 15 May 2016, 10:16 am
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Join Date: Aug 2014
Location: Thousand Oaks, CA
Posts: 7,298
Default Re: Overheat and Won't Start

First thing I would check is the battery and cable connections. Make sure you have a battery load test done with the battery in the PT Cruiser. If your battery voltage drops below 10.5 the engine will not start.

If battery and battery connections are good I would suggest checking the wiring for the camshaft and crankshaft sensors. Sometimes when someone starts working on a PT Cruiser they will pull on the wire harness and break a clip underneath the engine holding it in place. The wire harness falls down and starts rubbing on the half shaft. Go underneath the
PT Cruiser and see if the harness wires are shorting to ground rubbing on the half shaft or the frame. This is a common problem for the 2001 & 2002 PT Cruisers.

If the wire harness looks okay I would suggest measuring the voltage going to the camshaft sensor. Post what you find.
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