What size is the exhaust after the muffler on the 97+ XJs 2" or 2-1/4". Mines to rusted to get a good measurement and I want to extended back to where it belongs again

 

2 1/4

 

My first attempt would be to unplug the Coolant Temperature Sensor and see if the issue goes away. If it does, replace the CTS.

It could also (likely) be a clogged fuel filter. These are often neglected and should be replaced occasionally.

There are many other possibilities as well, and I'm sure more folks will chime in

 

Ty

 

I'm blessed once again with jeep problems. Just yesterday it started acting really sluggish. It would hesitate when I tried to give it gas and then it would eventually accelerate. Then when I shut it off and went to turn it back on a few minutes later, it started but idled really low for about 10 seconds and then died. I tried giving it some gas while it was idling low but it didn't respond at all. It did this a few more times then it started up and I managed to drive it home. Now today I let it idle and once it got up to operating temp it did the same thing, this time I noticed while it idled very low I could hear a loud "whirring" sound. Like something metal rotating coming from the engine bay. And ideas what this could be? I'd really appreciate the help.

 

can u look in the engine bay while something is "whirring"?

 

So I decided to replace my fuel injectors with bosch 4 hole the other day along with my valve cover gasket on my 95 xj 4.0. I was needing to replace the valve cover gasket and thought it would be a good idea to go ahead and do my injectors while I was there.
Now everything is complete and it started right up after cranking a few times to get the fuel back through the rail. But now it still has to crank for about 3-5 seconds before it will fire up. Once it's started there is no issue. I can turn it off and turn it right back on with no problem, but if it sits for 15 min or more then I have to crank it for 3-5 seconds again.
Everything seems solid and can't find any visible leaks. I checked the release valve on the fuel rail to see if it has pressure and it still squirts fuel even after it has set for the 15 min time period.
I'm kind of at a loss. Does anyone have any ideas as to what this could be?

 

sounds like one of the injectors is leaking out and flooding a chamber

pull the rail and lay it over a piece of cardboard, then prime the pump and see what happens

 

So my air blows only to the windshield vents. I want to fix it so that I can adjust the air again. Comíng out of the fire wall are two vacuum lines which are bother plugged. I know one goes to the intake which has a spot for a vacuum line plugged. But what about the other vacuum line. Does it go straight over to the reservoir? Also,,what does the reservoir do? Can I fix the vents without the reservoir cause otherwise I'm gonna have to go to the JY to get one. Also,,anybody know which vacuum lines goes to which spot, or does it not matter? Thanks.

 

All vacuum lines originate from that one manifold line by using 'T' wherever line meets a component. Line terminates at reservoir.
I believe one of those lines from firewall operates the blend door (in cab). the other would go to the heater control valve (on coolant lines to heater core). Should still operate without the reservoir.

 

thanks, so do i just need to run the manifold line to the blend door line and that's all? And what about the heater/AC controls labeled on the diagram? Not sure where or what that is on the firewall.

 

The HVAC controls control the blend door, lol

Of those two lines protruding from the firewall, one of them will be for the stupid heater control valve, and one is the controls that operate the blend door. Try one and then the other. The heater control valve line is useless. Just hook it up so you can change the direction and blend doors.

You need the line, check valve, and the reservoir. If you don't have cruise control don't worry about running the line all the way forward. You can get a reservoir from the junkyard and just stuff it in the corner of the engine bay somewhere... length of line doesn't matter. Without the check valve and reservoir things will basically only work at idle or when you let off the throttle.

 

what's is the vacuum check valve? Is that the manifold vacuum line Plug? So I need a line from the manifold to the firewall/blend doors, then from the firewall/blend doors to the reservoir?

 

Is anyone familiar with 'Parts Master' brand steering components? Uses the same part numbers as Moog.

 

Anybody know what this is for?