1994 idle issues

Y

Yellow94Gts

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May 20, 2024

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May 23, 2024

#1

• May 23, 2024

• #1

I’m having some issues with my idle will sit around 1100-1200 and when rolling it will hang at 1500 untill I stop and it will go back down to 1100 but I just can’t seem to get the idle to go down I’ve tried a base idle reset and it didn’t do anything and I’ve also tried a IAC restrictor plate and that did nothing at all aswell I just can’t seem to figure this out. (The car has a EGR and SMOG delete and is tuned to delete the egr) no noticeable vacuum leaks either I’ve smoke tested the car twice and can’t find any Koer koeo and cylinder balance codes linked below

 

AeroCoupe

lube between the nut and the face. I know my lubes

Founding Member

Oct 28, 2001

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May 23, 2024

#2

• May 23, 2024

• #2

Have you done a base idle reset?

 

Y

Yellow94Gts

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May 20, 2024

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May 23, 2024

#3

• May 23, 2024

• #3

AeroCoupe said:

Have you done a base idle reset?

Click to expand...

Yes

 

Y

Yellow94Gts

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May 23, 2024

#4

• May 23, 2024

• #4

Yellow94Gts said:

Yes

Click to expand...

And nothing

 

Mcmahst

5 Year Member

Jan 19, 2021

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Laguna Woods CA, fort Mohave AZ

May 24, 2024

#5

• May 24, 2024

• #5

What is the vacuum reading at idle?

 

Y

Yellow94Gts

New Member

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May 24, 2024

#6

• May 24, 2024

• #6

21-23ish but is also idling at 1200 so thought that could be the reason for a higher vacuum

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

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#7

• May 24, 2024

• #7

I didn't see any codes linked

 

Y

Yellow94Gts

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May 24, 2024

#8

• May 24, 2024

• #8

I thought I attached the videos lmk try again

 

Y

Yellow94Gts

New Member

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May 24, 2024

#9

• May 24, 2024

• #9

General karthief said:

I didn't see any codes linked

Click to expand...

 

AeroCoupe

lube between the nut and the face. I know my lubes

Founding Member

Oct 28, 2001

5,786

3,920

183

Claremore, OK

May 24, 2024

#10

• May 24, 2024

• #10

Still no links or codes.

 

Y

Yellow94Gts

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May 24, 2024

#11

• May 24, 2024

• #11

General karthief said:

I didn't see any codes linked

Click to expand...

Ok so codes are KOEO 511 and 12 and KOER 3 and cylinder balance test was 9

 

Mcmahst

5 Year Member

Jan 19, 2021

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Laguna Woods CA, fort Mohave AZ

May 24, 2024

#12

• May 24, 2024

• #12

I suspect the 511 is caused by your EGR delete modification. It could be creating issues with your ECU. Try removing it and see what it does to the idle.

 

Y

Yellow94Gts

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May 24, 2024

#13

• May 24, 2024

• #13

Mcmahst said:

I suspect the 511 is caused by your EGR delete modification. It could be creating issues with your ECU. Try removing it and see what it does to the idle.

Click to expand...

What do you mean remove, Remove the tune or remove the code? If you mean the code how do I clear them?

 

General karthief

wonder how much it would cost to ship you a pair

Mod Dude

Aug 25, 2016

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May 25, 2024

#14

• May 25, 2024

• #14

I think he means remove the EGR delete mod, it will turn the light on but it takes that mod out of the equation,
I think
In case it is not functioning correctly
I guess

 

Mcmahst

5 Year Member

Jan 19, 2021

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Laguna Woods CA, fort Mohave AZ

May 25, 2024

#15

• May 25, 2024

• #15

Yea, I assumed you had a stock ECM with a EGR delete chip. So, what ECU are you using and what mods have been done? You’ve already eliminated the typical high idle causes, so we’re looking for the unusual cause. Most don’t have molded ECUs, but you do. So, it’s more than likely the cause of the high idle.

 

Y

Yellow94Gts

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May 20, 2024

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May 25, 2024

#16

• May 25, 2024

• #16

Mcmahst said:

Yea, I assumed you had a stock ECM with a EGR delete chip. So, what ECU are you using and what mods have been done? You’ve already eliminated the typical high idle causes, so we’re looking for the unusual cause. Most don’t have molded ECUs, but you do. So, it’s more than likely the cause of the high idle.

Click to expand...

Yep I have a stock ecu

 

Mcmahst

5 Year Member

Jan 19, 2021

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Laguna Woods CA, fort Mohave AZ

May 26, 2024

#17

• May 26, 2024

• #17

Yea, what he said. Remove the ECU mods and see if it helps the issue.

 

Methodical

15 Year Member

Dec 1, 2003

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May 26, 2024

#18

• May 26, 2024

• #18

The hanging idle is normal so the idle doesn't just drop hard and stall the car. However, stock idle is lower than 1100 rpms. Did you set idle to 1100 rpms?

 

Y

Yellow94Gts

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May 26, 2024

#19

• May 26, 2024

• #19

Methodical said:

The hanging idle is normal so the idle doesn't just drop hard and stall the car. However, stock idle is lower than 1100 rpms. Did you set idle to 1100 rpms?

Click to expand...

No I’ve been unable to get my idle below 1100

 

Y

Yellow94Gts

New Member

May 20, 2024

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May 26, 2024

#20

• May 26, 2024

• #20

Methodical said:

The hanging idle is normal so the idle doesn't just drop hard and stall the car. However, stock idle is lower than 1100 rpms. Did you set idle to 1100 rpms?

Click to expand...

That is what I am asking for help on