Godenades
NAXJA Forum User
- Location
- San Diego, CA
Hey everybody, so I have read what feels like hundreds of posts about this issue and it seems like many of them just disappear or decide to sell the truck because they are so tired of dealing with it. Hopefully I will be different and I can help the next guy in diagnosing his issue. I have been working on this for a few days now, but this Jeep off a guy that said it had been sitting for about a year and developed a misfire. I have been going through cruisers tips to see if any of those would make a difference but to no avail. I recorded a video that can be seen here showing the symptoms and talking about some of the things that I have done. Hopefully the video helps you see what I'm dealing with and also maybe you'll see something that looks wrong.
https://youtu.be/gQxmtOmTrkQ
Here is what I have done so far:
Checked ground on TPS = no resistance
Set TPS to 17% of 4.81 = .83
Refreshed grounds
Cleaned and swapped MAP and IAC with working one from my other Renix 4.0 - can swap other parts too, my 89 is a good running Renix.
Cleaned throttle body
Changed plugs to new champion copper gapped at .035
New wires
New distributor cap
New distributor rotor
Checked compression = 150ish on all cylinders
Checked spark with each wire and each plug in each cylinder
Tightened intake bolts on top
Sprayed all vacuum hoses with starting fluid to check for leaks
New O2 Sensor
Cleaned coolant temp connection
Checked EGR function
Ran seafoam through tb
Made sure gas was good and added more
I know there are few things I still need to do like tighten the bolts on the bottom of the manifold, double check that all hoses for vacuum are clear and a couple other things but if you can think of anything that you feel would be attributing to this issue I would greatly appreciate the suggestion. I will work on this thing every night until it is ready to go!
Brian
https://youtu.be/gQxmtOmTrkQ
Here is what I have done so far:
Checked ground on TPS = no resistance
Set TPS to 17% of 4.81 = .83
Refreshed grounds
Cleaned and swapped MAP and IAC with working one from my other Renix 4.0 - can swap other parts too, my 89 is a good running Renix.
Cleaned throttle body
Changed plugs to new champion copper gapped at .035
New wires
New distributor cap
New distributor rotor
Checked compression = 150ish on all cylinders
Checked spark with each wire and each plug in each cylinder
Tightened intake bolts on top
Sprayed all vacuum hoses with starting fluid to check for leaks
New O2 Sensor
Cleaned coolant temp connection
Checked EGR function
Ran seafoam through tb
Made sure gas was good and added more
I know there are few things I still need to do like tighten the bolts on the bottom of the manifold, double check that all hoses for vacuum are clear and a couple other things but if you can think of anything that you feel would be attributing to this issue I would greatly appreciate the suggestion. I will work on this thing every night until it is ready to go!
Brian