vehicle vapor locking

[Danimal]

Awwww shiiiiiiiit....

hahahahaha!

Back to the OP.

1) Replace gas cap
2) Replace fuel filter (personally I would just do both of these at the same time unless you knew the filter has already been changed recently)
3) Check fuel pump discharge pressure and check proper operation of the back-pressure regulator. If the regulator is failing, you will have low fuel pressure and will cause the engine to fall on its face. If the fuel pump is failing then you will have the same effect.

Also I would run some fuel system cleaner for a couple weeks to clean the crap out of the injectors. When you run them at low pressures for a little while they tend to plug up more than normal. You might want to do this before you replace the fuel filter so that you don't crap up your new filter right away if there is a bunch of junk in the gas tank causing the problem in the first place.

[brutal]

Probably not directly related, but while you're at it check the CCV/PCV valve if so equipped. My old Bronco II drove me nuts with weird hesitation, bogging, etc. and it was simply a plugged up PCV valve.

[Pacman89]

Definitely check your fuel pressure @ injector rail. If pressure is ok, then you may have a faulty float on pump assembly and would need a new one. If the pressure is low check the pressure @ the fuel filter on pump side. If pressure is good replace the filter. How many miles & when was last tune up done? Is the check engine light on?There could be a problem with the ignition system as its OBD 1 & minor issues may not set off your Check ENG. light. There are virtually a number of issues that could cause a hesitation.

[Ah Pook]

Did the gas cap fix work?

Fuel filter would be my second choice.

[hghclsswhitetrsh]

It's a jeep thing, I don't understand...

/troll session

[blackford76]

While you are checking fuel pressure, look at the injectors themselves. Specifically where the fuel rail hooks to them, and where they seat into the intake. The 'O' rings used to seal them were prone to failure. I would think that by now they have been replaced, but it won't hurt to look to see if any fuel is leaking past them.

Most likely a bad gas cap.

[GilpinGuy]

Man, the Jeep haters...

I had a '95 Grand (like HoneyBadger) that I traded in at 398K miles. Yeah, it was tired, but it ran fine. No major problems except the usual battery, water pump, etc. replacement stuff that comes with a seriously high mileage vehicle.

I've had 6 different Jeeps and have been very happy with all of them.

Frankly, I think that most sheeple just have lost touch with their vehicles and don't know how to maintain them properly. Proper maintenance = a properly running vehicle.

TANGENT: my VERY left wing boss at my old job once said at lunch after I mentioned that I changed the oil in my Wrangler "Oil change? Why would you change your oil? That's just stupid?" He had a Wrangler as well.

His opinion was that "changing oil" was a conspiracy by the oil companies so we use more oil. We never actually needed to change our oil. <sigh>

I challenged him of course, and his reply was "Well, my Jeep leaks so much oil, it's like I'm changing it all the time!"

My '99 Wrangler has almost 200K miles and doesn't leak/burn a drop. Silly libs....

[brutal]

...I challenged him of course, and his reply was "Well, my Jeep leaks so much oil, it's like I'm changing it all the time!"

Well, that was very green of him now wasn't it?

[glock21]

Well i showed the jeep to Blackford and he figured out the problem in about 45 secconds. My exhaust had broke, then the malfunctions. Turns out the exhause was broke right by the tank. It was heating up the fuelpump and tank. Put a new exhaust on and the problem is fixed, took it on a long drive and no probs.

[GilpinGuy]

Well, you need new exhaust anyway so you'll fix two problems at once. Nice!