welp I do NOT pass emissions

[Jesse J]

I got my emissions done and it is baaddddddd. I should be below 220 HC and I am at 3086-4046 and for CO2 max is 1.2 and I have 13-14.5. My map vacuum line is fine I rebuilt it with some brakeline because it snapped a while back. I have no idea what to do because I like driving my truck. I can sign up for a vintage license plate but then technically I can only cruise and take it to car shows. I also have the option of swapping an HO into it?? new injectors?

[Smokeyyank]

One of my old XJs had issues turned out to be a bad water pump. It was getting just a little too hot during the test and messed it up. O2 sensor and cats could also be something. 

[89 MJ]

Do you have a REM? I think that would help a lot with diagnosis. 

[Jesse J]

39 minutes ago, Smokeyyank said:

One of my old XJs had issues turned out to be a bad water pump. It was getting just a little too hot during the test and messed it up. O2 sensor and cats could also be something. 

it got a new pump last week 

 

36 minutes ago, 89 MJ said:

Do you have a REM? I think that would help a lot with diagnosis. 

 I do not

[jdog]

Cat or 02 sensor (especially if you haven't replaced it yet)

[cruiser54]

Have you ever cleaned the c101 connector?

[Jesse J]

4 hours ago, cruiser54 said:

Have you ever cleaned the c101 connector?

it has been deleted thanks to your awesome writeup and video

[cruiser54]

I'm suspicious of the MAP sensor.

[Jesse J]

the actual sensor?

[cruiser54]

That, or the vacuum source to it. Without a REM, kinda tough to diagnose. 

[Jesse J]

I am pretty confident about the vacuum to it. the little rubber thing that connects right to the throttle body isnt the tightest fit I had to push it back in before the test. 

[cruiser54]

At idle, spray carb cleaner around it. See if it's sealing.

[fiatslug87]

Then perform cruiser's tip #31

[cruiser54]

There's a thought.............

[Jesse J]

well in classic fashion I took my throttle of to clean it and I found that my vac line into the throttle wasnt going to the right hole on the nubs. the top one I thought the top one was the right one but nope its the bottom. figured I don't need to do tip 31 because I have basically already done that with the brake line?

[cruiser54]

First off, glad you found it!!

At idle, you still wanna spray around the throttle body and that fitting to be sure there's no vacuum leaks. 

[Jesse J]

we are leak free from as far as I can see. anything else I can do to make it run cleaner? except not own a 34 year old truck

[cruiser54]

You did the carb spray?

[fiatslug87]

Check your O2 sensor's resistance, probe A&B on the sensor, should be 5-7 ohms

[Jesse J]

9 hours ago, cruiser54 said:

You did the carb spray?

I used brakleen because I used the rest of my carb cleaner to clean my throttle body

8 hours ago, fiatslug87 said:

Check your O2 sensor's resistance, probe A&B on the sensor, should be 5-7 ohms

I will do that when I get the chance. o2 sensor is downstream on the downpipe of the exhaust correct?

[cruiser54]

Brake Clean is fine. 

[Jesse J]

ok thats what I thought. anything else I can do?

[cruiser54]

Test your O2 sensor heater circuit resistance?