I recently bought a 95 4wd country jeep Cherokee with 147 on the dash. Every time I start it wont start right away it usually takes until the second time to get it going. There is a small miss when idling. you would have to listen to it to see it. when it idles it goes between 3 and 7 thousand rpm. While driving no misses and it performs just fine. Am I just thinking about it to hard? Changed the oil and radiator fluid. Changing spark plug wires tomorrow to try to fix miss. Any suggestions

 

Like any other problem with an xj it could be many things. Start with the free stuff, test your battery at the auto parts store and give all your vacuum lines a look over as well as your battery terminals. Then move onto sensors like the IAC, MAP, and TPS. Then there's always the fuel filter.

When you do the plugs change the cap and rotor too.

Beyond my experience for the miss.

 

Welcome to the board much to be learned here.

I hope you mean 3-7 "Hundred" RPM's not thousand rpm's.

When you change the plugs and wires be sure to do the cap and rotor also and if it were mine I would replace the coil but that's just me. When you changed the antifreeze did you flush the engine/ with the heater core open and replace the thermostat and housing when you did? If not you should have done it, the thermostat housings are cheap and can be a problem might as well replace at same time.

Most all here will tell you to replace the entire cooling system on these older XJ's and its good advice and cheap to do. New radiator, water pump, fan clutch, hoses (radiator and heater) along with what was done.

 

Exactly what I was thinking

 

Yea that's what I ment :P I did an engine flush when I drained the radiator No I haven't got to the thermostat I was gonna until the end of the week to start that. I got a set of spark plugs but there not exactly .35 will I still be safe

 

Also what is a fan clutch forgive my ignorance please

 

it's a clutch that varies the speed of the fan depending on the temp of the fluid inside the clutch

 

So its only for a manual?

 

Check all vacuum lines. Smallest crack will produce "untraceable" issues. I know vacuum leaks cause irregular idle and wrecks havoc with the on board computer

 

No a fan clutch is for all fans. Basically its like a thermostat for a house from years ago. Uses a coil spring to engage and disengage depending on coolant temp

 

You need to gap them all to .35, autozone has a little gap tool. It's only about 2 dollars if they don't just give it to you.

 

you know how on an electric fan you can spin it freely when the vehicle is off and it spins until it coasts to a stop? That is the clutch disengaged. When triggered, the clutch engages and spins the fan.

 

Got my truck running better xhnage park cap wire button and fuel filter