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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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20,097 Posts
View attachment 587628
brakes don't work so good, either
======================
for the rough idle -
check the muffler bearings -

for the brakes -
they might be getting too hot from the exhaust -

unrelated to the other issues -
does the AC work?
 

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Super Moderator
2003 Deville Base
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5,318 Posts
Discussion Starter #3
======================
for the rough idle -
check the muffler bearings -

for the brakes -
they might be getting too hot from the exhaust -

unrelated to the other issues -
does the AC work?
a/c blows cold on passenger side, but not on driver side.
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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70,666 Posts
A 20 oz. bottle of Chevron TECHRON, TopTier 87 gasoline and a couple of WOT runs to 135 should do it.

That model has the 4-55 A/C system - 4 windows at 55 mph. No blend doors.
 

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96 FWB
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1,137 Posts
Needs new exhaust solenoid for ELC.
 

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2013 Cadillac CTS 3.6 Sport Luxury
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1,422 Posts
I think rough idle is a product property on that engine.
 

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'14 SRX4 Premium silver-coast/shale-brownstone
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820 Posts
Holy crap! A real life Powell Motors "The Homer" including the separate soundproof kids bubble in the rear!

🎶 "Powell Powell Powell makes a powerful car!" 🎵

Max
 

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