5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Suttering/idle problem

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Old 10-02-2006, 05:12 PM
  #11  
sipynsyrup
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Default RE: Suttering/idle problem

ok.. I cleaned the IAC with carb cleaner and cutips, but it did NOT solve my problem.

-Before I cleaned the IAC, the car was taking a while to start up.. unless it was already warmed up.

-The check engine light comes on a few minutes after starting it up.

-At around 5krpm the car just sputters and won't go any farther through the rpm range



The mods on the car:
-3.73 gears
-bbk cold air intake
-bbk 70mm throttle body
-full exhaust(not sure if it has cats.. I just bought the car saturday)
-MSD ignition


I am not sure when the plugs were changed

I did run through fuel injector cleaner, but that didnt work.

The car seems to idle fine, but I dont get why it sputters from time to time and wont go past 5krpm....... maybe spark blowout?

I need a datalogger or atleast a way to check the CEL

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Old 10-03-2006, 02:37 PM
  #12  
sipynsyrup
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Default RE: Suttering/idle problem

anyone??

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Old 10-03-2006, 02:48 PM
  #13  
Creetan
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Default RE: Suttering/idle problem

Any way you can take a short vid of the car so we can hear how its running???
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Old 10-03-2006, 03:02 PM
  #14  
grabbem88
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Default RE: Suttering/idle problem

clean your mass air meter and filter!....


88stanguru>i can solve your "cold starts"....i got mine fixed...i'm sure my cam is just as big as yours
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Old 10-03-2006, 09:01 PM
  #15  
kevinas1214
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Default RE: Suttering/idle problem

Check your email and see if you can get a factory mass air and I have a factory tb if you want to buy it cheap and see if your car runs any better. I have a 65mm tb and my car ran better with it but ran much worse with an aftermarket mass air. Let me know
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Old 10-03-2006, 09:29 PM
  #16  
BlackMustang02GT
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Default RE: Suttering/idle problem

yup dude had the same problem, Cleaned my IAC, nutting, spent 400 bucks at ford and nuttin, came home cleaned my MAF, worked like a miricle but stilled idled weird, changed my o2's advanced my timing and BOOM car ripps asphault! (timing was at 8* now im at 15!)
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Old 10-03-2006, 10:00 PM
  #17  
I3atR!ce
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Default RE: Suttering/idle problem

pull codes if the cel light is coming on
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Old 10-03-2006, 10:06 PM
  #18  
Joel5.0
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Default RE: Suttering/idle problem

Suggestions……

- Resetting the base idle
- Setting the TPS voltage (Setting it between .8vdc - 1.0vdc is OK, no need to follow the .999vdc setting myth)
- Timing calibration
- Finding possible vacuum leaks.
- DIY KOEO/KOER Self-Tests and Cylinder Balance Test
and if the above link to m y 5 o h.com still doesn’t work, use
- How to run a KOEO, KOER Self-Test codes scan and Cylinder Balance Test instead.

Need to access the system for the failure codes, having the CEL on = hard failure in the system.....no calibration procedure will fix it until you id what the system failure is. You can throw parts(=money) at it, but you will be guessing.....use the ECM, it's also a tool....OH!...in your SN95 the diagnostic connector is behind the RH strut tower, not on the driver side as with the fox bodies.
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Old 10-04-2006, 12:27 AM
  #19  
sipynsyrup
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Default RE: Suttering/idle problem

Alright

I pulled the codes with an OBD1

they are:

332= insufficient EGR flow detected

311= thermactor air system/fault during engine run self-test

314=thermactor air system/fualt during engine run self-test/ left side



Also, after seeing people had problems with the EGR capped.. I noticed the header on the left side of the car(viewing from front) has a spot where something connects and is capped... could this be my problem?? I am guessing the owner before me capped the EGR, which is causing this

local shop said $45 to custom weld the EGR back


sound like my problem???
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Old 10-04-2006, 01:41 AM
  #20  
94gtmax50
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Default RE: Suttering/idle problem

TAKE OFF YOUR MASS AIR FLOW AND SPRAY SOME CARB CLEANER ON THE SENSOR IN THE MASS AIR NOT TO MUCH . THEN BLOW IT OUT WITH A BLOW GUN NOT TO CLOSE YOU WILL DAMAGE THE SENSOR . THAT SHOULD STOP IT FROM CHOKE . THAT IS WHAT I DID WITH MY STOCK AIR FLOW . I HAD THE SAME PROBLEM .
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