There is a knock sensor test I haven't tried. You simply tap on the block near the knock sensor with a screwdriver or something and listen for a change in the engine as it retards the spark. I get you changed it, but a wire or connection might be an issue. I have some re-bar handy, maybe I'll try that.

If I saw black out the pipe during the water deal I might take that as a sign there was excessive carbon buildup.

Anyway I added the above to my Cat Temp thread> https://www.cherokeeforum.com/f2/tem...2/#post2834710

 

Had a new cat put in and passed with flying colors. Wooo! Thanks for all the help fellas. Im sure I'll come up with another question or two down the road.

 

Excellent!!!!

 

And the crowd cheers! Well done!

 

MY TURN! I read the thread & thought...why not add my 2 cents & try n get help before I register the bunny in Camp Verde!



right after I bought it . 1987 Cherokee XJ (above, failed emissions picture)



changed spark plugs, dist cap, rotor, oil, coolant flush, block flush, radiator hoses, & thermostat replaced. Oh, & added sea foam & filled with premium gas (tank filled on my way to emissions, I know...oops) (above, failed emissions picture)



cleaned the air intake thingy with a vacuum hose sucking some stuff from a can (friend has a better clue mechanically than I) that caused white smoke...stalled the jeep out. Sprayed some cleaner in the air intake, added 1 bottle of rubbing alcohol (which I NOW know didnt help NOX since it makes the engine burn hot ANYWAY) ran for an hour & off to emissions again. (above, failed emissions picture)



under hood view, cause its bad enough I am a moron...but there is after market shyt I just dont know what it does, no clue what all is missing & well, I am a computer geek...with a wrench I am useless.



plugged where some vacuum line should be



I learned is the EGR solinoid & know SOMETHING should be there....



not only is there no vacuum line on THAT EGR, but there is another piece (saw it in a picture) that comes WITH an EGR if I replace it.



so this is the after market air intake system. I seen pictures where that plug on the right isnt capped but plugged into where the red sponge ball is sitting. (again, no clue if that is part of my issue)



& lastly, a front view under the hood.

Ok, so the Bunny cost me $1,000. (cause it RAN & it was night when I got there) sent it to the shop for the laundry list of to do's. While getting the list, got collant & engine flushed, full brake job, wire chase. (Learning NOW...to buy tools & figure it out! $1500 later of course & the rest of the to dos they wanted $2600!) I posted a thread ... but go no traction for asking for opinions & advice...so thought I would tag along since this is my current issue.

Missing parts on emissions & what hose goes where is my current situation. Sadly, Im on my 2nd 3 day reg to get it through emissions...but it expires Thursday...so I am HOPING for a fast reply for things I can try (& hope if I need to buy more than hoses ... parts are available) to get it done before close of business Thurs.

HELLLLLPPPPP plz =D

Sorry it didnt just put pics in...thought I did it right...

 

Click on the link in my signature and do posts 1 through 5, possible 27.

 

so I DONT have to get missing vacuum components? I skimmed through the list & doing my best in understanding it. Remember, I am totally unfamiliar under the hood but trying. I really thought that vacuum line from the EGR would be a good place to start.

 

Never said that. Keep in mind we can't see your pics. Do the frickin Tips if you wanna pass emissions!!!

This help?

 

??? You sure about that one Pete? is the 87 different?

 

I'm confused now.

 

Air IN at a rear PVC valve? Two lines off the front of the VC? All those vacuum lines to the TB?

 

4 cylinder, I guess.

Try this:

 

ok, so I was up & out EARLY. right after my last post. pics can be seen in my lil album

https://www.cherokeeforum.com/member.../albums/bunny/

since I have an after market K&N intake, it was throwing me. I seen a pic in this forum with one as well & did my best guess to mimic it. Now, the EGR on the manifold only has 1 hose place...the one that oriellys had came with a transducer...So I have no transducer. & thanks to your pic above, I see I dont have a line coming out of the purge either. bottom line, I didnt go for emissions. Since its going to AMC for a 3in lift Mon anyway...they are going to have someone look at it for me. Sorry to take your time fellas, but thank you for your input.

 

that was the pic I was using to reconstruct my vacuum line.

 

4 wasnt a charm LOL. Titling in Cottonwood!