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09-03-2009, 07:51 PM
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#1 | ||
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Member
Trader Rating: (3)
Join Date: Jun 2009
Location: Woodstock
Posts: 164
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its an 89 mustang 5.0 drives good, will only idle half the time, will be driving at speed when it comes time to slow down at about 1500 rpm the check engine light comes on then the car shuts down. if i start it back up it will run fine until it comes time to stop again. been having issues with the power steering pump making some noise but nothing to crazy. don't have anymore ideas. i do know that i only have a 160 degree t-stat and i was planing the throw some new plugs in it this week. anyone have any ideas?
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09-03-2009, 10:47 PM
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#3 | ||
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In withdrawal!
Trader Rating: (22)
Join Date: Nov 2005
Location: Little Britain
Posts: 1,615
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1. Get rid of the 160 thermostat! Go 180, the 160 doesn't allow the engine to get up to operating temperature. This could be apart of your problem but,
2. The most likely culprit is a carbon'd up IAC or EGR. Remove them, blast them with carb cleaner, dry them off and re-install! Almost every fox body I've ever owned (12 now...) has had idle issues at 1 point or another! |
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09-07-2009, 08:16 PM
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#7 | ||
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Been around a LONG time
Trader Rating: (5)
Join Date: Jan 2007
Location: JOakville
Posts: 1,890
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Here are some links with pics, IAC and IAB I think are the same.
http://www.muscularmustangs.com/iac.php http://www.stangnet.com/mustang-for...-checklist.html The 2nd link has a good pic half way down. |
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09-07-2009, 08:28 PM
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#8 | |||
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VVV~ JETFIGHTER ~VVV
Contributor
Trader Rating: (31)
Join Date: Jun 2006
Location: Dufferin County
Posts: 16,006
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Quote:
Your Idle Air Control is the cylinder-like looking piece attached to the front of your throttle body. Looks like this (except shouldn't be cracked as the one below):  |
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09-10-2009, 04:51 PM
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#9 | ||
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Member
Trader Rating: (3)
Join Date: Jun 2009
Location: Woodstock
Posts: 164
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haha thanks i cleaned both of them, they were pretty bad, changed the t stat to a 180. the car still runs cool i think that it is because i have an aftermarket fan that was on it when i got it. the temp goes up and down a lot. if it sits for a bit it gets hotter but as soon as i drive it it cools back down. changed the spark plugs aswell. it stopped stalling but now chugs a bit every once and a while. still working on it.
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