sounds like a cam

WhiteFizzo

Founding Member

May 17, 2000

85

0

0

Virginia Beach Va

Apr 9, 2007

#1

• Apr 9, 2007

• #1

I was driving to work last week and all of the sudden my car starts acting funny. When sitting at idle, the car sounds like it has a big cam in it and it will buck pretty badly just driving without my foot on the gas. I dumped the codes and I get a 12 Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too low) - ISC. The car sounds pretty bad until about 1500 rpms and then begins to shake around 2500-3000. I checked for vacuum leaks and found a few, now I am pulling 15 hg at idle. Any suggestions?

 

WhiteFizzo

Founding Member

May 17, 2000

85

0

0

Virginia Beach Va

Apr 9, 2007

#2

• Apr 9, 2007

• #2

one more thing. I tried adjusting the timing and if I took it up past 20 it seemed to idle better. It sounds like detonation and it goes away with the higer timing, but i don't want to drive around with 25 degrees of timing. That just doesn't feel right.

 

goodfastncheap

Member

Dec 25, 2006

100

0

17

Bellevue, NE

Apr 9, 2007

#3

• Apr 9, 2007

• #3

Have you ruled out something mechanical, especially valve-train related? Is the 12 your only code? You said you corrected vac leaks...did you also check all wires and connections, especially near your headers?

 

ShortThrow50

Member

Oct 22, 2006

923

2

16

Pa

Apr 9, 2007

#4

• Apr 9, 2007

• #4

20 degrees timing? your nuts

 

WhiteFizzo

Founding Member

May 17, 2000

85

0

0

Virginia Beach Va

Apr 9, 2007

#5

• Apr 9, 2007

• #5

I kid you not, 20 degrees plus. I brought it back down to 10 degrees, still sounds bad but that much timing worries me.

 

ShortThrow50

Member

Oct 22, 2006

923

2

16

Pa

Apr 9, 2007

#6

• Apr 9, 2007

• #6

wish i could help you out.

 

ghostang93

Member

Mar 26, 2007

29

0

12

Pace, FL

Apr 9, 2007

#7

• Apr 9, 2007

• #7

Could that IAB code be a white rabbit? Kinda sounds like a badly streched timing chain. Then again, i'm not much on troubleshooting. Just my two yen.

 

Roland69

Sergeant Tangnet

Sep 17, 2005

2,867

2

58

Port Elgin, Ontario

Apr 9, 2007

#8

• Apr 9, 2007

• #8

VTEC stuck in the on position maby



Just kiddin. is it somthing as simple as a plug wire

 

ninety15.0

New Member

Mar 10, 2004

1,336

0

0

Apr 10, 2007

#9

• Apr 10, 2007

• #9

I run 18 degrees of timing....no problems