I have a '91 22RE long box as my daily driver/off-roader.
I've had the truck since July of '07 with no complaints. It needed an alternator and a belt and a thermostat more recently but nothing major. it has 152km on the original motor/tranny.

I installed a cold air intake and an LC engineering header. it worked awsome with the 2-1/4" exhaust system I made up for it. The weather recently became much cooler here in my home town in Ontario (thats the Ontario in Canada not California). The power usually really starts to come on by about 2000-2500rpms and pulls well til about 4000.

The problem is when you are accelerating up to speed, it seems to be lacking power. if I was to cruise in 3rd or 4th gear @60kph (35-40mph) and try to mat it, it bogs down and sounds like its running on 2 cylinders. If you were to ease up a little on the gas it smoothens out a bit.
From time to time it doesnt even bog (like 5% of the time I'm driving) Compression is: 1-220psi, 2-190psi, 3-200psi, 4-200psi
Also there is no Check engine light going off either.

Could the Bog be something as simple as the air is just too cold and it bogs because it is getting that much more?
Should I be putting in new Injectors?
Is my TPS acting up?
Are there sensors or something that would be affecting this problem?

Can anyone point me in the right direction?

 

I didn't know there was an Ontario in California

When I was driving mine, it would kind of go nowhere when I floored it.. You had to ease down on the pedal to see any result, and it struggled to do 70 mph. Then again, these motors were built when speed limits didn't exceed 55.

Cold air is usually an engines best friend.

Injectors are expensive as hell, $110 ea last time I checked. You could get them cleaned by Downey for $38 ea, couple other places do it too.

 

Mine had a similiar symptom and it turned out that I had a HG leak. I had a tiny bit of coolant go into the #4 cylinder. Your compression looks good, though. I'd check/replace your plugs.

PS I had my 4 injectors cleaned for around $65.

 

the plugs looked like a light milk chocolatey colour, I will try swapping them out. where might I be able to send my injectors to be cleaned?? There arent many places I know of in Canada let alone in my province that would do that. is there anything in Michigan or New york?? I have seen a couple ads in 4x4 mags, just dont have any of them to scower through them.
thanks.

 

http://www.downeyoff-road.com/Engine...Injection.html

http://www.rceng.com/

http://www.cruzinperformance.com/

There's another, WitchHunter... but he doesn't ship to Canada anymore.

Take your pick, lol.