89 22re develops miss after about 30 min

NashuLee

New member
Howdy,
I have a 89 4runner with an 22re that has about 7k miles on it. It develops a miss under when under any sort of throttle after it has run for about 40 minutes. The truck is not over heating, the temps have been verified by the temp gun on the head when it is run this long and I am getting pretty consistent temps at around 195 to 200 degrees.

It seems to run pretty darn good until about the 45 min part. This is my first Yota, so I don't have anything to compare to. When Cold and first half hour of running, it feel strong at first take off, seems to let off a little around 2300rpm then picks back up at around 3100RPM. It runs smooth as a baby butt down the highway almost all the way to work for me, then at almost the same point it starts to hesitate and when if I throttle down it bogs coughs and spits.

I have had the truck for about two weeks. It has been doing this all along. Last week the miss under heavy throttle turned into not running at all even when cold and after some investigation, I found that the rear injector wire clip was broken and the rear injector was not working. I am ordering some new injector clips and pig tails as soon as I can find them. For now, that rear injector clip is zip tied on.

I am getting a code pop up as as I start to drive, but when the code pops up the truck runs great. It is not until I have driven for a while that it starts acting up.

Any help or direction I can get from yall would be great,

Thanks
 
Register to hide this ad
I would start by finding out what the code is. There's a trick to jump a connector with a paperclip to get the code. I don't remember it, but it's easy to search for.

It could be the injector issue, or it may be the coil. When things warm up they expand, and that could be causing a bad connection to get worse or the coil may be losing a bit of it's power after it heats up.
 
7000 miles? If that's not a typo, I'd be taking it back to whoever built the motor.

Other than that, yeah, you need to pull the codes and see what they're telling you. Google "4crawler engine codes" for instructions.
 
7000 miles? If that's not a typo, I'd be taking it back to whoever built the motor.

Other than that, yeah, you need to pull the codes and see what they're telling you. Google "4crawler engine codes" for instructions.

I will pull codes tonight. AS for returning it... not able to. I purchased the truck about 2 weeks ago. The truck didn't come with any warranty or such. I have spoken with the guy I bought it from and he points me towards the timing and or distributor but is telling me its not an issue he had with it.

I will definitely look up the codes tonight. I was just hoping to tap into a resource here or at yota tech and maybe spark a ... " I had that happen " moment.
 
you jump TE and E1 to get the code.

He is getting the 52 and 53 for faulty knock sensor. I think it is defaulting to safe mode and shutting it down.

Has anyone had this issue and resolved it?
 
you jump TE and E1 to get the code.

He is getting the 52 and 53 for faulty knock sensor. I think it is defaulting to safe mode and shutting it down.

Has anyone had this issue and resolved it?

I know thats what it was pulling the other day, but now that it is running on all 4's I thought it would be worth pulling them again!
 
Better than that, pull the battery overnight to reset the computer, then make the problem happen again, then pull the codes.
 
I know thats what it was pulling the other day, but now that it is running on all 4's I thought it would be worth pulling them again!

WELLLLLLL... the injector clips are zip tied in, so it is possible it is still not running on all 4. it is still possible that one of the injectors is just barely holding in and when it get driven or hot it starts missing.

turn the key off, jump the two pins again and turn the key on. count the blinks and see if it is still the same codes.

I suspect someone on here has gotten the faulty Knock sensor codes before, and likely may know a super easy fix. (fingers crossed)

Perhaps there is a knock sensor bypass that will allow us to just bypass it for the purpose of troubleshooting.


OR

We could trade, and I will figure it out.......:bluejump:
 

Members online

Forum statistics

Threads
278,310
Messages
3,554,080
Members
248,016
Latest member
Advally Service

Trending content

Back
Top