help my pony runs rough

L

LT1 Eatr

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Nov 29, 2005

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Nov 30, 2006

#1

• Nov 30, 2006

• #1

the car completely stalls out under deceleration or when i push in the clutch to turn i allready replaced the iac valve twice so i know thats not the problem. also i have checked very well and i can't find a vaccum leak. please anybody that has some advice, bring it on. please try to keep the cure inexpensive. thanks

 

bill302

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Nov 2, 2005

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alabama,gadsden

Nov 30, 2006

#2

• Nov 30, 2006

• #2

pull the codes and repost results.when was your last tune up and what did you replace???..you can also clean the maf and other things listed in this link http://www.muscularmustangs.com/maintain.php if none of this helps i would think the pip sensor in the distributor would be your problem...easiest fix for that is to buy a reman dist. from autozone for about $100 but i would rule out all the freebees first...

 

bill302

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Nov 2, 2005

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alabama,gadsden

Nov 30, 2006

#3

• Nov 30, 2006

• #3

bill302 said:

pull the codes and repost results,when was your last tune up and did you replace all the filters...you can also clean the maf and other things listed in this link http://www.muscularmustangs.com/maintain.php if none of this helps i would think the pip sensor in the distributor would be your problem...easiest fix for that is to buy a reman dist. from autozone for about $100 but i would rule out all the freebees first...

Click to expand...

sorry double post cant get use to this new layout....

 

L

LT1 Eatr

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#4

• Nov 30, 2006

• #4

i have a anderson pms in the car so there are no trouble codes in the computer. i will try cleaning the maf though

 

HISSIN50

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

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Nov 29, 1999

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#5

• Nov 30, 2006

• #5

Do you still have the dashpot function in the computer (I'm not sure if the PMS can remove it)? Is the VSS hooked up?

 

L

LT1 Eatr

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#6

• Nov 30, 2006

• #6

spek english i just got the thing and pluged it in. what is the dashpot function and what ins the vss?

 

L

LT1 Eatr

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#7

• Nov 30, 2006

• #7

sorry i'm a sh@#tty typer

 

HISSIN50

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

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#8

• Nov 30, 2006

• #8

The Dashpot function is what keeps the RPM's up a little inbetween shifts and while decelerating. When the throttle is closed while moving, the IAC opens to keep the RPMs from falling too fast and keep the car from possibly stalling.
Some self-tuners turn it off (but often set their idle above that of the stock-programmed commanded-idle). In a similar fashion, if you had a VSS code (the VSS is imperative to dashpot function) that would be a place to look.
The VSS is the vehicle speed sensor.

 

L

LT1 Eatr

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#9

• Nov 30, 2006

• #9

well the pms is supposed to show all the codes in the computer even the ones that don't trip the check engine light. i don't want to jump the connector for fear of messin up the pms

 

HISSIN50

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#10

• Nov 30, 2006

• #10

LT1 Eatr said:

well the pms is supposed to show all the codes in the computer even the ones that don't trip the check engine light. i don't want to jump the connector for fear of messin up the pms

Click to expand...

I can respect that. It just would have been a real obvious place to start if either had been true.

Cleaning the IAC as Bill originally mentioned is not a bad place to start.

Good luck.

 

O

OrLackThereof

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Palm Bay, FL

Nov 30, 2006

#11

• Nov 30, 2006

• #11

You haven't touched the idle screw have you? How's TPS voltage? Does the car idle fine, any misfiring?

 

L

LT1 Eatr

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#12

• Nov 30, 2006

• #12

HISSIN50 said:

I can respect that. It just would have been a real obvious place to start if either had been true.

Cleaning the IAC as Bill originally mentioned is not a bad place to start.

Good luck.

Click to expand...

the iac is new tonight! do you know, or know anybody who may know , how to reset the anderson pms. i bought it used and i'm still running his tune.

 

L

LT1 Eatr

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#13

• Nov 30, 2006

• #13

OrLackThereof said:

You haven't touched the idle screw have you? How's TPS voltage? Does the car idle fine, any misfiring?

Click to expand...

the idle screw is broke off so no i haven't touched it. its the end with the head that is broke. i don't know the tps vo;tage. and the car surges and the goes good, surges, goes good,etc. the car has a e cam so detecting a misfire is impossible for me.

 

jrichker

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#14

• Nov 30, 2006

• #14

See "Help me create the Surging Idle Checklist" at http://forums.stangnet.com/showthread.php?t=534062
for help with your idle problems. The first post contains all the updates to the fixes. I continue to update it as more people post fixes or ask questions.