I have a 92 22re with 200K miles on it.
I have had it for about 2 months now and been driving it around town. Not my daily driver and I don't drive daily anyway.
I took it up into the mtns for the first time memorial day weekend. First long trip also.
Drove about 4 hours to a trailhead at 8800 ft. Came back to the truck about 30 hours later and it didn't want to start. Kept turning over but wouldn't catch. I tried again and then with a little gas pedal action got it weakly started. Drove around a little. stopped and ate at 6000 ft. It started right up. Then drove 3 more hours to another trailhead at 10,600.
Tried to start it again 20 hours later and same starting problem. It cried for a while until I gave it a little gas and it started weakly.
I drove it home to 5400 ft and the next morning it started fine.
Is there any correlation as to why it doesn't want to start at higher elevation? I bought this to be my beater mtn truck (and it was great on the 40 miles of dirt/4wd roads I drove). I would sure hate to get stranded at a remote TH somewhere.

 

Both my 87s had over 200k on them and didn't have this problem. The only time I've ever had a problem starting at alt is when I had my 85 overnight at Devils Playground on Pikes Peak. It didn't want to start with the 20w50 racing oil. Have you checked your fuel pressure? It sounds like the fuel pump might be tired.

 

mine starts fine at 13k ft. Left it at 10k 11k trail heads for a week or more, and never a problem. With fuel injection, you shouldn't have any altitude problems. However, i believe in the owners manuel there is something for a high altitude adjustment. If you don't have yours, PM me, and i'll look it up in mine.

 

I'm not sure that altitude is the culprit. I just noticed it twice at altitude. It has never happened below 8000 ft. It could be the long drives there or possibly the dusty 4wd roads I drove up??? I'm open for other suggestions too.

I imagine that this truck has lived in Colorado it's whole life. I think it was purchased here and all the records say CO.
I got 22.5 MPGs on average over 500 miles (without accounting for the error associated with big tires). With a solid hour in 1st of 4wd low. I built a wooden sleeping platform with futon mattress. And it has a topper. So the back is a little heavier than stock, but it seems to run really well.

All in all, I'm REALLY satisfied with the truck, just don't want to get stranded. It is weak going up hills and has 265/70/16s, I took the sway bar off and battled the wind the whole way home. Would the sway bar make it not sway so much in the wind?

Thanks for the fuel pressure check, I'll have to look into how to do that. And I'll look to see if the high altitude adjustment was already done.

 

What all have you done since you bought it?

I would start with a Seafoam treatment (or two) - search on "seafoam" for all the details.

Unless it came with impeccable records, I would change ALL the fluids and filters (seriously - engine oil, diff oil, tranny, transfer case, coolant, bleed the brakes, fuel filter - EVERYTHING) so you know where you're starting from and get a real good idea of how well the truck was REALLY treated. For the diffs and tranny, I would highly recommend replacing with synthetic.

With 200k miles, an O2 sensor would probably be a good investment too (although your mileage sounds pretty good, so it's probably OK).

The other thing to look into is the throttle position sensor. Search on that or TPS.

A little love now will ensure it keeps on tickin' for a long time!

 

The Seafoam sounds like a possible idea, but why would diff oil, tranny, transfer case, coolany or brakes have anything to do with it having trouble on startup?

I plan on slowly doing all the fluids, and did my first own oil change with a syn blend (next one will be full syn).

Unless I have evidence the O2 sensor or TPS are bad, I'd rather put that $250 into tires.

 

Unless your engine has just been rebuilt, don't do synthetic in the engine. Your engine will probably start leaking oil in several places. Synthetic will clean out some of the sludge that currently acts as a seal. I did this at about 180k and had it start leaking at about 190k. It had never used oil to that point. Had it rebuilt at 212k.