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Joined: Dec 2003
Posts: 1,899
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Dec 2003
Posts: 1,899 |
I showed my friend my black contour and how it wont idle right.. i just found out that it wont idle (start up it revs to 2k then drops down to about 100 then goes back up to 2k then it goes back down but this time down to about 50 then stalls out.. i go to start it again it revs up to 2k and stalls again.. the next time i start it it revs up to about 2500 and slowly goes up then drops down and ildes ruf for about 5 more min doing the same thing, then it will idle fine at 1000) until it starts to warm up.. then it idles fine.. minus the fouled plugs.. my friend told my it's my fuel pressure regulator... could he be right?
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Joined: Sep 2002
Posts: 1,788
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Sep 2002
Posts: 1,788 |
I doubt it.
Check the IAC (Idle Air Control valve). It is responsible for idle speed management.
Steve
98 Contour SE Sport 2.5 Duratec ATX The wifey's car
89 Taurus SHO - 246K miles
94 SHO ATX - 190K
1997 F-150 5.4L ATX - The Workhorse 150K.
ANY THREAD WITH "OMG" or "WTF" ETC IN THE TITLE WILL BE IGNORED!
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Joined: Aug 2002
Posts: 35
New CEG\'er
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New CEG\'er
Joined: Aug 2002
Posts: 35 |
my wifes 98 tour is doing the same thing.
I pulled the code P0301 misfire, P0171 & P0174 usally means you have a bad MAF or low fuel pump presure. I put in new plugs and changed the fuel filter still no change, next tried the MAF off my tour and still the problem remains, Want to check pump pressure to rule it out looked high and low for my fuel pressure tester but it nowhere to be found when I need it.
So,I going to the junkyard in the morning to get IACV for it to see if it will quit (I mean idle smoothly).
97_contour _sport
Added T-red wing
Cougar big brakes
DMD pulley
SS brake lines
Ford 9mm wires
21mm BAT bar
SVT motor mount
ES bushings
Metal water pump
ST200 badges & mats
ST200 UIM/LIM
Cold air intake
BAT Y-pipe
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Joined: Nov 2001
Posts: 717
Veteran CEG\'er
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Veteran CEG\'er
Joined: Nov 2001
Posts: 717 |
if the idle is fluctuating or "wandering", it usually means there's an intake leak somewhere that's not being metered. if the IAC has been removed and re-installed, it could be a gasket leak. the bolts that hold the IAC in place are weak. if one is broken, the IAC is not held in place firmly enough, and you have a leak.
contours, deloreans & fiats, oh my!
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Joined: Dec 2003
Posts: 1,899
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Dec 2003
Posts: 1,899 |
where is the IAC located?
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Joined: Jan 2004
Posts: 383
CEG\'er
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CEG\'er
Joined: Jan 2004
Posts: 383 |
It is directly behind the EGR. I've become very familiar with that general area recently. Follow the 3/4" or so rubber tube that goes from the intake towards the firewall. That's your IAC.
Sean
'99 Silver SVT Contour
(2000 miles since June, now needs new front brakes and bearings)
'98 CBR900RR Again
(Put away for the winter)
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Joined: Aug 2002
Posts: 35
New CEG\'er
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New CEG\'er
Joined: Aug 2002
Posts: 35 |
97_contour _sport
Added T-red wing
Cougar big brakes
DMD pulley
SS brake lines
Ford 9mm wires
21mm BAT bar
SVT motor mount
ES bushings
Metal water pump
ST200 badges & mats
ST200 UIM/LIM
Cold air intake
BAT Y-pipe
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Joined: Dec 2003
Posts: 1,899
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Dec 2003
Posts: 1,899 |
well, i found out that it was bad gas... i filled up at a bard part of town "gas was cheap" and my car started to run like crap.. now i put 90 octane in with a little octane booster and fuelinjector cleaner... and she seems to be running like right off the showroom floor
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