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Stalling/power loss

Tiny
CODYMCAFEE
  • MEMBER
  • 1988 CHRYSLER LE BARON
  • 60,000 MILES
I have a Chrysler Le Baron 2.5L with 60k original miles. It starts and idles perfect, but after going about half a block, it stops accerlerating and starts stalling, until I take my foot off the gas, and as soon as I put my foot back on the gas, it starts doing it again. This car sat in a garage for 5 years, I've had the gas tank cleaned out, had the fuel pressure checked, changed the ignition coil, distributor cap, and rotor. I took it to a Chrysler dealer, they hooked it up and said the power brake booster needed to be replaced and that was all. I replaced that and it's still doing it.
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Tuesday, July 12th, 2011 AT 6:43 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
This sounds like a plugged catalytic converter. While it's idling, listen at the tail pipe. If you hear more of a hiss than the normal "putt putt" of the exhaust, suspect the converter. There is a tool for measuring exhaust back pressure that can identify a plugged converter.

When the fuel pressure was checked, was that just done while the engine was idling or was the gauge connected and observed during a test drive while the problem was acting up?
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Tuesday, July 12th, 2011 AT 7:51 PM

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