88trailcrawler
NAXJA Forum User
- Location
- OC SoCal
88, 4.0, Auto, probably somewhere around 170K miles (havent checked in a while)
Need to eliminate this Renix gremlin (sputter, hesitation, backfire, crank-no start)
It is intermittent sometimes a few times a day, sometimes nothing for months at at time. Issue has never left us stranded, as it usually fixes itself by sitting or unplug/replug the MAP and we are on our way. There in NO pattern (cold/hot - idle/accelerating)
Fuel pump sounds good when key is turned. Fuel squirts out of the fuel rail valve when pushed in.
Jeep is driven only 5-10 miles a day, it is my kids high school car. It runs good and strong other than this intermittent problem.
Plugs/wires/rotor cap changed 5 years ago
All sensors changed out about 2 years ago
Don't hear any VAC line leaks, line from MAP to TB looks good
Problem dates back to original owner who said dealer never could fix it
Here is what I am thinking next (figure all or most are a good idea anyway)
- New battery and ground wires
- New ICU and coil
- Wires/Plugs/Cap (it's been 5 years)
- Maybe new distributor assembly (doesn't seem to expensive)
I would appreciate comments on my plan of attack:
- Is it a good idea?
- Might it help eliminate the Renix issue
- Best parts/parts sources
- Any potential upgrades
- Any additional suggestions
The goal is to have confidence in the reliability of the rig so that I can proceed with trail worthy upgrades.
Any input/links, etc would be greatly appreciated.
Need to eliminate this Renix gremlin (sputter, hesitation, backfire, crank-no start)
It is intermittent sometimes a few times a day, sometimes nothing for months at at time. Issue has never left us stranded, as it usually fixes itself by sitting or unplug/replug the MAP and we are on our way. There in NO pattern (cold/hot - idle/accelerating)
Fuel pump sounds good when key is turned. Fuel squirts out of the fuel rail valve when pushed in.
Jeep is driven only 5-10 miles a day, it is my kids high school car. It runs good and strong other than this intermittent problem.
Plugs/wires/rotor cap changed 5 years ago
All sensors changed out about 2 years ago
Don't hear any VAC line leaks, line from MAP to TB looks good
Problem dates back to original owner who said dealer never could fix it
Here is what I am thinking next (figure all or most are a good idea anyway)
- New battery and ground wires
- New ICU and coil
- Wires/Plugs/Cap (it's been 5 years)
- Maybe new distributor assembly (doesn't seem to expensive)
I would appreciate comments on my plan of attack:
- Is it a good idea?
- Might it help eliminate the Renix issue
- Best parts/parts sources
- Any potential upgrades
- Any additional suggestions
The goal is to have confidence in the reliability of the rig so that I can proceed with trail worthy upgrades.
Any input/links, etc would be greatly appreciated.