Help me create the "Surging Idle Checklist"

ImportEater98

New Member

Mar 17, 2003

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Worcester, MA

Jun 4, 2005

#81

• Jun 4, 2005

• #81

ugh...im so stupid. Typed that post with a few beers in me. You are right hissin......basically switch the closed loop to open loop and vice versa in that post. Sorry bout that :damnit:

 

super302

I'd do anything for free Bapples

May 29, 2004

2,878

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Davenport, IA

Jun 4, 2005

#82

• Jun 4, 2005

• #82

Thanks,
A combination of things fixed it....all for a $3 can of throttle body cleaner

 

T

Tuff02Ranger

New Member

Mar 22, 2004

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Jun 7, 2005

#83

• Jun 7, 2005

• #83

I've tried just about everything listed here, and I still have a surging idle. But mine goes from like 700 up to 1300 RPM's. I'm also running very rich. My car was fine before I added the supercharger, 255lph fuel pump, and 30 lb injectors. Also went to a 76mm MAF. If I unplug my MAF, it won't surge anymore. I've cleaned the IAC and throttle body and still no luck. My brother thinks that putting in a Kirban FPR will fix my problem. Does that sound right? Between regulating fuel pressure and adjusting my timing, should that fix the problem, even though unplugging the MAF stops the surge?

 

willys1

Active Member

Dec 2, 2003

1,004

1

36

New Jersey

Jun 10, 2005

#84

• Jun 10, 2005

• #84

jrichker said:

Check & clean the IAB electrical contacts & the 10 pin connectors too. If that doesn't fix it, I would look into replacing the IAB. The cold stalling is a clue to a non-functional IAB.

Click to expand...

I went to Hackettstown Ford today and ordered a new IAB,it should be in next week.97 beans

 

jrichker

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Dublin GA

Jun 11, 2005

#85

• Jun 11, 2005

• #85

Tuff02Ranger said:

I've tried just about everything listed here, and I still have a surging idle. But mine goes from like 700 up to 1300 RPM's. I'm also running very rich. My car was fine before I added the supercharger, 255lph fuel pump, and 30 lb injectors. Also went to a 76mm MAF. If I unplug my MAF, it won't surge anymore. I've cleaned the IAC and throttle body and still no luck. My brother thinks that putting in a Kirban FPR will fix my problem. Does that sound right? Between regulating fuel pressure and adjusting my timing, should that fix the problem, even though unplugging the MAF stops the surge?

Click to expand...

Try cleaning the MAF element & then "clock" the MAF to see if changing its position helps any.

 

willys1

Active Member

Dec 2, 2003

1,004

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New Jersey

Jun 11, 2005

#86

• Jun 11, 2005

• #86

jrichker said:

Try cleaning the MAF element & then "clock" the MAF to see if changing its position helps any.

Click to expand...

Yeah,I would try turning the MAF,its worked for me.Turn it 180 degrees towards the motor.

 

Don Fiveolio

New Member

Apr 23, 2005

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Houston, TX

Jun 12, 2005

#87

• Jun 12, 2005

• #87

Alright,

I'm starting to have the same issue with my Stang and I think I have found the problem. I'ts most likely the IAB and I want to clean it out, but I don't know what to use.

What are you guys using?

 

89MustangGX

I have nothing productive to add!

Jul 3, 2001

10,262

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Mill Creek, WA

Jun 12, 2005

#88

• Jun 12, 2005

• #88

don herberto said:

Alright,

I'm starting to have the same issue with my Stang and I think I have found the problem. I'ts most likely the IAB and I want to clean it out, but I don't know what to use.

What are you guys using?

Click to expand...

Carb cleaner or similar. May need to use a screwdriver if it's REALLY bad...just be careful of the rubber seal part inside.

 

Don Fiveolio

New Member

Apr 23, 2005

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Houston, TX

Jun 12, 2005

#89

• Jun 12, 2005

• #89

Here's a question that is a little of topic, but deals with the same situation. I pulled the IAB last night and cleaned the ports on the side of the throttle body. I put everything back together and now the surging idle is worse.

While I was cleaning, I decided to pull the throttlebody and the gasket was horrible. I figured this might be a part of the problem so I headed right out to the parts store and bought a brand new gasket, but this is the thing:
Do I need gasket sealant for this application?? I could not tell because everything got soaked in coolant. The guy at the shop said I should get it and sold me a tube, but I thought I would get some feedback before I started.

Any hints??

 

jrichker

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Mar 10, 2000

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Jun 12, 2005

#90

• Jun 12, 2005

• #90

don herberto said:

Here's a question that is a little of topic, but deals with the same situation. I pulled the IAB last night and cleaned the ports on the side of the throttle body. I put everything back together and now the surging idle is worse.

While I was cleaning, I decided to pull the throttlebody and the gasket was horrible. I figured this might be a part of the problem so I headed right out to the parts store and bought a brand new gasket, but this is the thing:
Do I need gasket sealant for this application?? I could not tell because everything got soaked in coolant. The guy at the shop said I should get it and sold me a tube, but I thought I would get some feedback before I started.

Any hints??

Click to expand...

I would use some RTV sealant since you are mating a water jacket (TB water cooling) to a part that has engine vacuum.

 

Black Sun 5.0

Founding Member

Mar 23, 2002

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L.I., N.Y.

Jun 17, 2005

#91

• Jun 17, 2005

• #91

Definitely check all grounds. I had a problematic DC Control unit for my electric fan. I replaced it and all the associated wiring, surge is very rarely a problem now where it had once been stalling all the time. I doubt the issue was with the controller, the grounds made more sense.

 

5.02GO

Founding Member

Jun 26, 2001

308

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16

Ky, Blue Sky Country

Jun 17, 2005

#92

• Jun 17, 2005

• #92

Thought i read that someone wanted a part number on a bypass plate.


Well, here is a link to mustangs unlimited. "Idle Adjustment Plate".
I think its a must for "E" cam users. Mine would NOT hold an idle until i installed this plate. I realize this may not have alot to do with the original subject thread but here is the link just incase someone needs this.

http://www.mustangsunlimited.com/itemdy01.asp?T1=F2933+01&Category=&catkey=74-01

 

Marshall

Founding Member

Nov 22, 2000

225

2

19

Qld Australia

Jun 23, 2005

#93

• Jun 23, 2005

• #93

Great thread - It has been suggested that a final checklist be written with all the possible checks. Please someone do this so us dummies can download it for future reference.

Thanks

 

BERT306

Member

Jun 18, 2005

75

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7

Jun 23, 2005

#94

• Jun 23, 2005

• #94

I just found that i had a X3Z computer in my 90LX, not the A9L. Had to get a calibration tube for my 76MM C&L
MAF to match the X3Z. Runs GREAT now!!!

 

aete2

Founding Member

Nov 23, 2001

554

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Jun 24, 2005

#95

• Jun 24, 2005

• #95

thanks guys forthe list huge help

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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Jun 24, 2005

#96

• Jun 24, 2005

• #96

BERT306 said:

I just found that i had a X3Z computer in my 90LX, not the A9L. Had to get a calibration tube for my 76MM C&L
MAF to match the X3Z. Runs GREAT now!!!

Click to expand...

Is the X3Z puter not a cobra unit? If so, it seems to me that the puter calibrates for 24# injectors itself (in case an issue pops up for you Bert).

Good luck.

 

mkkrs1

Member

Dec 2, 2004

49

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6

indian trail,nc

Jun 27, 2005

#97

• Jun 27, 2005

• #97

Tps Iab

If you replace the TPS or IAB. do they have to be set or is it a simple remove the old one and install new. are there any checks to perform to see if the TPS or IAB are still good before you purchase new ones not needing them.



mike 89-718

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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Jun 27, 2005

#98

• Jun 27, 2005

• #98

mkkrs1 said:

If you replace the TPS or IAB. do they have to be set or is it a simple remove the old one and install new. are there any checks to perform to see if the TPS or IAB are still good before you purchase new ones not needing them.



mike 89-718

Click to expand...

Jrichker has some wonderful write-ups he has posted on peoples' threads. I would search each term above using the search feature, or search JR's old posts. You should find what you want.

Good luck.

 

C

crenth5

New Member

Feb 3, 2004

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Jun 28, 2005

#99

• Jun 28, 2005

• #99

My engine doesn't surge, but if you get it over ~2000 RPM's it comes down to 16-1700 and just sticks until you come to a stop. I cleaned the IAC and did't help. I tried turning the IAC upside down and it was worse. I cleaned the MAF tube and that didn't make a difference. Haven't cleaned the element in the MAF yet. I have the idle set at 7-800 and the TPS is somewhere around .95, not over 1. I DO have an E-cam, but it doesn't have a rough idle, it just sticks. I lloked for the 10 pin connectors and couldn't find them. Anyone else have this similar problem?

 

K

kr mstg

New Member

Jun 28, 2005

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Jun 28, 2005

#100

• Jun 28, 2005

• #100

I would also recommend checking and replacing the pcv valve, grommet, and the wire mesh in the back of the lower intake. ( falls under vacuum leaks)