1999 Concorde Timing Belt

The timing belt broke on my 1999 3.2L Concorde at about 80k miles.

I replaced the timing belt, water pump, and tensioner. Now it is running
rough (like it is out of time) and I get the following codes:
P0341
P1297
P1391
P1684.

Any suggestions?

Thanks in advance

Sam

 

Find out what the codes mean?

 

That is an interference engine (i.e., if pistons and valve train loose
synchronization from the timing belt, the valves hit the pistons when
the pistons are at TDC). You likely have some damaged valves.

That doesn't mean you also don't have it mis-timed. Need to look up the
codes.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
address with the letter 'x')

 

Sam, you are going to have to clear the fault codes and see which ones come
back. Since your belt broke when it was running some of those faults may
have been set before the belt was installed. P1297 No change in Map. P1391
Int loss of cam or crank and I have no idea what the others are.They are
not in the manual. Possibly your code reader given you false data

Glenn Beasley
Chrysler Tech

 

"P1684 is only a status which indicates that the PCM memory has been
cleared within the last 50 ignition cycles and does not indicate a problem."

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
address with the letter 'x')

 

P0341 seems to be indicative of an issue with the "range/performance
of the camshaft position sensor"

Again, it is not obvious whether the code was set when the belt broke
or whether it was set after.

As Bill pointed out this is an interference engine -- you may want to
check compression on each cylinder to see whether it is similar.

I also remember that on this engine you have quite a range for the
position of each of the cam pulleys -- the crankshaft has a precise
position (arrows have to align), while the cams have to be "between
the two dots". The FSM advises you to mark the exact position as to
where the cams are at TDC (obviously this would not work in your
case). I think there is a possiiblity that one or both of the cams
might be off by one tooth -- that's the range I think.

You can probably run the engine without the crankshaft pulley and the
accessory belts for a short while if you simply need to check wether
the engine is OK.

You may consider a simple method of trial and error -- there are
roughly two possible positions for each of the cams, thus you would
need to try at most four permutations to eliminate the timing issue as
a possibility.

Unfortunately, most likely the roughness is due to damaged valves/
pistons -- there was a post on www.dodgeintrepid.net forums about a
timing belt breaking -- when they installed a new one the engine ran
rough -- when checked compression discovered that it was much lower on
2 cylinders as compared to the rest -- at the end the guy had to
replace both heads.

 

Here is the post I was alluding to earlier -- the codes thrown are
pretty similar

http://www.dodgeintrepid.net/forums/showthread.php?p=1008585&mode=linear#post1008585

Thanks,

Alex

 

Same scenario recently posted on the 300M Club (300M has essentially the
same exact engine - bored to different displacement):
http://300mclub.org/forums/viewtopic.php?t=14580&highlight=head

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
address with the letter 'x')

 

I appreciate all the replies. I was told that the 3.2L was a non-
interference engine. I guess he was wrong. I'll check compression tomorrow
and go from there.

Thanks again

Sam

 

You're welcome.

Oh - also the factory service manuals also state that the 3.2/3.5L
engines are interference.

Bill Putney
(To reply by e-mail, replace the last letter of the alphabet in my
address with the letter 'x')

 

under the very right conditions you can damage a valve but it does not occur
very often