I once had to deal with a Mopar that had the constipation problem
and another symptom was that it built HUGE crankcase pressure.
Blew oil everywhere. That one would barely go 30 mph.
Bruce
-----Original Message-----
From: Scott & Glenda Meyers <autox@earthlink.net>
To: Smokerbros@aol.com <Smokerbros@aol.com>
Cc: autox@autox.team.net <autox@autox.team.net>
Date: Monday, March 08, 1999 4:26 PM
Subject: Re: MR-2 stops running at 5500 rpm???
>Smokerbros@aol.com wrote:
>>
>> Well, our C/Stock MR-2 pulled a new one today. At 5500 rpm,
it suddenly goes
>> flat and sounds very sour, not the "bump-bump-bump" of the rev
limiter, but
>> sort of the same effect as far as acceleration - IT STOPS
HAPPENING! And
>> before you say "Yeah, MR-2s run out of power at about 5500..."
it's much more
>> dramatic than just the normal running out of power. We've
seen that before,
>> it's really unhappy. Plugs look fine, maybe a bit lean, no
"Check Engine"
>> light, or codes stored in the computer, and we've picked up a
bit of
>> detonation at part throttle acceleration at the same time.
>>
>> Any ideas???
>
>So - CHD has a 1991 MR-2, huh? I thought you'd NEVER switch.
>
>Charlie, I'm afraid I do have a very good clue as to what this
probably is -
>you won't like it. The same thing happened to my 91 MR-2, and it
costs about
>$650 to fix. Mine was a "49 states" model, and had one cat BTW.
>
>The cat has probably broken inside and is limiting power and
exhaust flow.
>
>Characteristics were like it suddenly had become an H Stock car.
General loss
>of 'perk' throughout the range, but especially over 3000rpm.
Mine even blew
>off the vacuum hose to the PCV control valve, or whatever that
was.
>
>It actually felt kinda 'constipated', looking back on it.
>
>The cat is a very special factory-only one, formed into a cast
iron housing
>that fits only this car.
>
>Good luck. I might be wrong.
>
>Let me know what you find (curiosity). Do an exhaust
backpressure test to
>confirm this - what, about 2 # or less list?
>
>Scott Meyers
>92 240 SX SE
>(Yes, again!)
>
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