Mechanical Issue. Where to start??

[mruff]

I just bought a 1988 62. Love it. Actually just drove it half way across the country and loved every minute of it. About 70 miles left in our trip the check engine light came on but made it home fine. Ran a diagnostic in it and is throwing code 22. Coolant sensor! I can't imagine that has anything to do with the way it's running but I may be wrong and here's the symptoms.
Hard starting and sometimes rough idle
On occasion the idle is very high (2000 rpm plus)
Will sometimes start, stutter and die when trying to start cold.
These issues all came suddenly so I suspect possibly o2 sensor ect but want some opinions before I just start part swapping. Thanks

 

[mruff]

I just bought a 1988 62. Love it. Actually just drove it half way across the country and loved every minute of it. About 70 miles left in our trip the check engine light came on but made it home fine. Ran a diagnostic in it and is throwing code 22. Coolant sensor! I can't imagine that has anything to do with the way it's running but I may be wrong and here's the symptoms.
Hard starting and sometimes rough idle
On occasion the idle is very high (2000 rpm plus)
Will sometimes start, stutter and die when trying to start cold.
These issues all came suddenly so I suspect possibly o2 sensor ect but want some opinions before I just start part swapping. Thanks

I'll post some pics of it too when I get a chance

 

[micruz60]

Got a record of recent service, before you owned it?
I am not expert on 62's, but it could be air flow meter, and check the FAQ's for something about fuel pressure regulator? Best to not jump in and take things apart, several nla parts. But you already knew that.
Congrats on gettin' into the wagon!

 

[LAMBCRUSHER]

read FSM. if your coolant is low that thing will throw a code, also if there is a problem with the wiring...check out your fusible links; the ground junction behind the dash; get a headlight harness; plug the head oil galley port with a threaded plug; remove and clean the throttle body with THROTTLE BODY cleaner not carb cleaner; calibrate the TPS; clean and test the IACS valve; replace the vacuum lines and all the fluids; do a rodney flush on the trans and adjust the valves. come back for moar...fj62=BEST LANDCRUISER; the great separator; it is the diff between US and them, ...4 eyes are better than 2

 

[doug720]

read FSM. if your coolant is low that thing will throw a code, also if there is a problem with the wiring...check out your fusible links; the ground junction behind the dash; get a headlight harness; plug the head oil galley port with a threaded plug; remove and clean the throttle body with THROTTLE BODY cleaner not carb cleaner; calibrate the TPS; clean and test the IACS valve; replace the vacuum lines and all the fluids; do a rodney flush on the trans and adjust the valves. come back for moar...fj62=BEST LANDCRUISER; the great separator; it is the diff between US and them, ...4 eyes are better than 2

Blasphemy...Second best, we all know a 60 is the best, as 2 are much better than 4! You were close, but less is more!

Oh, Welcome to the madness!

 

[Dsellers]

If that coolant temp sensor is reading wrong it will make the truck run like dump since the ecu needs to read that

 

[ward93]

What valve did u say plug lambcrusher? Head oil galley? Why?

 

[BlackCat]

If that coolant temp sensor is reading wrong it will make the truck run like dump since the ecu needs to read that

EXACTLY. If the sensor is reading say -22F, it thinks the coolant and the motor is cold, and dumps fuel.

 

[89BIGBLUE]

This just happened to me last month! Code 22...HARD to start. Once it warmed up, ran well but CEL came on. I put in a new temp sensor, burped it well, and all is good! As a bonus, it was the first time I HAD to use my crows feet tools! Don't forget the new copper gasket!

 

[ward93]

Those coped gaskets are easy to miss and haha crows foots are nice to have but if you working out of minimal tools remember u can make a crowd food by bending a regular wrench in a vice or taking the housing to reach it

 

[morganism]

sounds like a blown gasket, and air bubble in cooling sys. Try parking n idling on a steep slope, and see if it helps. Replace radiator cap.