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Here's the deal...I just had a 15 inch sub and 1000 watt amp installed on my 98 Contour. This problem started before that, but it has gotten worse. When I turn on my defrosters (front or rear-rear is worse) the car idles very, very rough and almost stalls. The thing is, it only does it when Im at a dead stop; either at a red light or in park. Any ideas as to what it is or what to do? I always turn the defrosters off when I get to a light or park now, but I'd rather have it fixed.
Steph
Dark Satin Green 98.5 Contour 2.5L SE
Pioneer Speakers
Alarm
Keyless entry
Contour.org window stickers
15 inch Sony Xplode sub
1000 watt Sony amp
1.2 Farad Tsunami Capacitor
Still missing my 98 Pacific Green 4 banger LX
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Originally posted by Joel4Prez:
Here's the deal...I just had a 15 inch sub and 1000 watt amp installed on my 98 Contour. This problem started before that, but it has gotten worse. When I turn on my defrosters (front or rear-rear is worse) the car idles very, very rough and almost stalls. The thing is, it only does it when Im at a dead stop; either at a red light or in park. Any ideas as to what it is or what to do? I always turn the defrosters off when I get to a light or park now, but I'd rather have it fixed.
Hey my car used to do that to, what fixed it was cleaning the TB, and UIM/LIM cleaning and having the injectors flushed, and also cleaning the MAF.
Last edited by HITMANinMI; 04/13/04 08:44 PM.
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Joined: May 2002
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I have no life
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Dude, you have a zetec, how did you do an UIM/LIM cleaning?
Anyways, I replaced my coil pack, and that seemed to help a lot.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
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Originally posted by Kremithefrog:
Dude, you have a zetec, how did you do an UIM/LIM cleaning?
Anyways, I replaced my coil pack, and that seemed to help a lot.
I didnt do it, a shop did it for me.
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You might just get away with a tune-up. When all those accessories are on it puts a heavier load on the engine via the alternator. If the engine isn't running tip top it will cause it to bog down like you are describing. A fuel injection cleaning wouldn't hurt either. If it still continues then I'd get more serious with things like cleaning the intakes, throttle body etc. How many miles on your car? Which engine / transmission do you have? Do you have a Check Engine light on? More information will help us help you.
'98 SVT Contour, in at least 639 pieces 
4 Speed MTX...synchro and shift fork replacement in progress 
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Originally posted by shotwell:
You might just get away with a tune-up. When all those accessories are on it puts a heavier load on the engine via the alternator. If the engine isn't running tip top it will cause it to bog down like you are describing. A fuel injection cleaning wouldn't hurt either. If it still continues then I'd get more serious with things like cleaning the intakes, throttle body etc. How many miles on your car? Which engine / transmission do you have? Do you have a Check Engine light on? More information will help us help you.
She has about 82,??? miles on the car. It's a 4 cylinder automatic. No check engine light.
Thanks!
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Joined: May 2002
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Originally posted by HITMANinMI:
Originally posted by Kremithefrog:
Dude, you have a zetec, how did you do an UIM/LIM cleaning?
Anyways, I replaced my coil pack, and that seemed to help a lot.
I didnt do it, a shop did it for me.
I'm sorry.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
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this is exactly what happened when the air compressor on my tour seized. any time I turned on anything that had to do with air, and was at a stop, it would idle very rough and stall at times. once the RPMs are up, it pulls the belt over the seized pulley anyways, and you don't notice the problem. after a long-ish drive with the defrosters on, stop and pup the hood. look around the left part of the bay, and check for thin smoke (the belt burning up basically).
1995 SE
2.5L V6/MTX
187k
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Originally posted by HITMANinMI:
Originally posted by Kremithefrog:
Dude, you have a zetec, how did you do an UIM/LIM cleaning?
Anyways, I replaced my coil pack, and that seemed to help a lot.
I didnt do it, a shop did it for me.
LOL, Zetecs dont have a UIM/LIM 
*Upper Intake Manifold/Lower Intake Manifold*
Last edited by CRZYDRVR; 04/14/04 09:35 AM.
-Ken V.
1998.5 SE Praire Tan Zetec ATX
psycho_bass@hotmail.com
Roush springs Roush rear sway bar BAT struts 17" Millie Miglia HT3 and a ton of subtle asthetic mods
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Thanks Drew and Shotwell!
She did have a tune-up around Thanksgiving.
I will have her check and clean the items mentioned and go from there.
In case you're wondering why I posted the info. on Steph's car....She couldn't get back on to post last night as her building (at college) was flooded.  She was unable to get upstairs to her room while they cleaned the building, so I posted for her. And because she's my daughter. 
Thanks for the help!
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