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Author
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Topic: Adjusting idle on fox body 5.0
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Stimson
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Member # 51
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posted
 
 
That could be a hint that you need to tighten your idle screw. Can you start the car and have it idle with out the IAC connected?
Posts: 2373 | Registered: Jun 2000
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J's DDLY SNK
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Member # 2016
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posted
quote:
Originally posted by st5150:
That could be a hint that you need to tighten your idle screw. Can you start the car and have it idle with out the IAC connected?
![[patriot]](graemlins/patriot.gif) Keep tightening until it idles right. its not a 5 min job, take your time.
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Rest In Peace
Juan Moya "The King Cobra"
11/16/81 - 8/20/05
We Will Never Forget You
Posts: 649 | From: San Jose | Registered: Oct 2002
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JohnCM
CAFords OG
Member # 1076
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posted
Well when I tightened it down, and drove it around like that it started backfiring when I downshifted. So I thought it needed to be looser???
Damn I shouldn't have messed with this thing! ![[Mad]](mad.gif)
Posts: 3545 | From: Roseville | Registered: Mar 2002
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Stimson
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Member # 51
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posted
when you tighten the idle screw, you also increase the TPS voltage. Back off the TPS when you tighten the idle screw.
Basicly, everything that could be said on the topic has been said. Start back from the first post and slowly read each reply and you'll be fine.
Posts: 2373 | Registered: Jun 2000
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darien87
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Member # 2022
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posted
Hey Sawson, when you say adjust the idle screw, what screw are you referring to? I've adjusted a small nut that's under the throttle body and connected to the throttle cable. Is this the "screw" you're referring to or am I messing with the wrong thing?
I've been trying to fix my idle problem ever since Mustang Ranch drilled a hole in my throttle body. The damn car's never idled right since.
Here's what it does, basically every time I put the clutch in the car wants to stay at whatever RPM I was at, (i.e. if I'm rolling to a stop at 1,500 RPM's and put the clutch in, the car stays at 1,500 RPM's). The RPM's come back down if I tap the gas pedal. Sometimes it even jumps up from idle to 1,200 RPM's or so. I've cleaned the IAB, done the 10-pin thing, and still it keeps doing this. The last time I checked the TPS, it was at about .85 volts. I think that was before I messed with the idle nut though.
Will the Corral.net procedure help my problem?
Posts: 206 | From: South Bay Area, CA | Registered: Oct 2002
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Stimson
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Member # 51
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posted
What brand / size throttle body do you have?
The corral.net proceedure is a joke, don't believe everything you read online. There is a lot of bad info floating around these days.
Is your TPS bad?
Have you tried partially covering the hole Mustang Ranch drilled with duct tape to see if it helps? Why did they drill it in the first place???
Posts: 2373 | Registered: Jun 2000
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Wildfire532FB
CAFords OG
Member # 1482
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posted
Hey i did that procedure from Corral.net and now my Idle is back down to 700 and i set it at 900 what gives? ![[Confused]](confused.gif) I am gonna go tighten the idle screw but i want my idle to STAY at 900 not drop down after a couple of months.
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68 Fastback
84 CJ7
94 HMMWV
95 GT
03 F350
17 Fusion Hybrid
Posts: 17578 | From: 530 | Registered: Jun 2002
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Stimson
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Member # 51
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posted
CobraJeep. The only thing worth while in that corral "how-to" is unplugging the battery... but there is no real need to do that because the EEC will learn its way regardless. The reason your idle drops from 900 is because the EEC isn't programed to idle it that high. Eventually the EEC is "learning" around your tightened idle screw and returning back to what it was programmed to do. Get a twEECer or a chip from Byron and have your car set to idle where ever you want.
Posts: 2373 | Registered: Jun 2000
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91PONY
Mrs. Valve Events
Member # 206
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posted
quote:
Originally posted by st5150:
The corral.net proceedure is a joke, don't believe everything you read online. There is a lot of bad info floating around these days.
Ahem....well it worked for my car! ![[Wink]](wink.gif) ![[Big Grin]](biggrin.gif)
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Heather '91 GT
Posts: 1477 | From: Citrus Heights, CA | Registered: Mar 2001
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Stimson
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Member # 51
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posted
Sorry, I was a bit harsh. I didn't mean to imply that method doesn't work... I was just saying its MUCH more complicated than need be and has useless witch doctor type steps in there like turning on and off all the accessories. I'm surprised they didn't talk about doing the rain dance backwards to please the EEC idle gods in the sky and tossing chicken bones in the witches brew in that "tech" artical Simply adjusting the screw and letting the EEC learn the new settings in time or unplugging the battery for a few seconds both are valid methods. No rain dance needed ![[Smile]](smile.gif)
Posts: 2373 | Registered: Jun 2000
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darien87
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Member # 2022
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posted
Hey Sawson, I have an Edelbrock 65mm TB.
I don't think my TPS is bad. Apex replaced it a few months ago when I was trying to track down a backfiring problem.
Joe at Mustang Ranch was trying to alleviate that throttle body whistle that most of the aftermarket TB's seem to have. It got rid of the whistle, but now my car won't idle right.
Posts: 206 | From: South Bay Area, CA | Registered: Oct 2002
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Stimson
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Member # 51
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posted
The cure is to get a ford 65mm TB. I don't know what else to tell you.
Posts: 2373 | Registered: Jun 2000
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Wildfire532FB
CAFords OG
Member # 1482
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posted
i adjusted the idle and its fine now, hopefully it stays that way. I can't afford a chip and i don't think i can get my Jeep dynoed anywhere anyways i think my 35s would break the dyno. I need a new tranny and rearend and i have almost enough money to do it.
Dana
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./_ _ _ ___ __\
(]]]_ _ o _ _[[[)
|\_o_ __ __o_/|
|__|..........|__|
68 Fastback
84 CJ7
94 HMMWV
95 GT
03 F350
17 Fusion Hybrid
Posts: 17578 | From: 530 | Registered: Jun 2002
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