Did head gasket got to plugs left over

[Grizbomb1684]

Recently did head gasket had a cel so started investigating checked all my vac lines and found these two plug can't seem to find where they go

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[1990AWD]

Grey plug is knock sensor.

Just can't think of the other right now...

 

[92AWDHX40]

Get a better pic of the gray plug it would help with wire colors, kinda blurry.

 

[agent23]

is it the A/C

 

[Grizbomb1684]

The grey one was the knock that got rid of my cel and no more idle surge but it's idling at 1000

Also I noticed one of the honey comb screens is missing from maf

 

[19Eclipse90]

The other is for the EGR temperature sensor. This was only used in vehicles with California emissions.

 

[Grizbomb1684]

The other is for the EGR temperature sensor. This was only used in vehicles with California emissions.

Cool so I don't need that one, now would that honey comb screen missing in the maf cause my idle to be rough? Car drives 100% jus idles a Lil rough now

 

[CrawlinZX14]

the screen should def be there, to straiten the air flow a bit and make it less turbulent but i dont think that would be an issue at idle. It may be your timing being off a bit. Have you checked your base time? And as said before, the grey plug is knock sensor, and the other is unused unless u have a cali car. If the knock sensor is unpluged tho it may cause an issue with idle.

 

[dalesocks]

Was the other one the ac switch?

 

[H@xtGSX]

Cool so I don't need that one, now would that honey comb screen missing in the maf cause my idle to be rough? Car drives 100% jus idles a Lil rough now

Yes, missing honeycomb in the MAF can cause a rough idle. The ECU is thinking less air is entering the intake than there actually is, so it will make it run leaner. If you have bigger injectors and something to adjust the A/F ratio, it isn't a problem. If you're running stock injectors and normal fuel pressure with no way to modify the MAF signal to the ECU, the motor is running leaner, which can easily make it idle rough and jumpy.

 

[miguelmcv]

The honey comb will affect idle.

You have to find the comb to but it back in,, other wise you will look everywhere with out luck.

It happened to me when I was trying to hack my MAF.

After putting everything back in,,,,,,,,,,,,,,,, It came back to normal...

Good luck.

 

[Grizbomb1684]

I have put the honeycomb back in lost few lbs boost but car is idling Lil smoother down to jus re timing the car trying to find pic of which plug to ground out I found two single wire plugs next to eachother behind battery one is a small pin connector other is a female spade connector but jus not sure which one to ground

 

[19Eclipse90]

Ignition Timing Adjustment Connector

 

[Grizbomb1684]

Ignition Timing Adjustment Connector

Awesome thank you,