YoterHome

I replaced the old head and timing chain along with the timing cover, water and oil pump. Timing's set and when it starts it runs, but surges moderately fast. Ive have every vac line off and pluged and reapplied to find out whats going on and i cant... please help! Any advice or knowledge would be greatly appreciated! 1985 22re Toyota Dolphin (motorhome)

Gargoyle_Runner

Clamp off the big vacuum line on the bottom of the throttle body leading to the idle air control valve. If the idle drops that's your problem. Also does it change wether the motor is cold or hot?

Gargoyle_Runner

Let me rephrase that a bit. Knowing that a cold motor is supposed to run at a higher RPM the clamp off test is something to be done to a warm motor. If you are at running temp and the idle is running high it could be because that valve isn't closing. Clamping it off would test to seen if it is closing properly or not.

58rennur4

iTrader: (1)

When clamping off that hose to IACV when the car is cold it should drop in RPM, when the car is at operating temperature is should drop no more then 50 rpm when clamping off hose.

YoterHome

It does retard the idle and seem to make it stop surging... But i still dont know what the problem would be. Im thinking it may be the TPS

Gargoyle_Runner

Could be TPS. Easy enough to test. I just went through a rebuild and had idle issues afterward. I've been chasing it for a bit. I tested my IACV during the rebuild and it tested OK. It has since crapped out and I can't get my idle to drop below @1300. My idle air screw on the throttle body is all the way seated. If I clamp the hose the motor dies. I have a new IACV arriving in a week so hopefully life will be smooth at about 750-800.

58rennur4

iTrader: (1)

If it retards idle when cold that is a good thing but if it does it when warmed up not so good Which one is it?

YoterHome

I hope that works for you brother! I called the local Advance to see about getting a IACV and they said the damn thing was discontinued but it cost $206!? Im hoping its my TPS lol!! I dismantled the throttle body last night and cleaned it up testing the sensor here in a bit and im gonna check the timing for the 4th time. I'll keep you posted, and let me know how the new IACV works out for you and if you happend to get it at a more affordable price then i was quoted! thanks!

thefishguy77

iTrader: (1)

Wow just checked the local parts house for the idle air control valve. $109 for a 3rd gen. Discontinued for a 2nd gen. So Sad

Gargoyle_Runner

I found a guy on EBay that had two OEM IACV for the early 22re. He was asking $150 and I shot him $100 and he took it. The other one is already sold.

thefishguy77

iTrader: (1)

Nice find. Let's hope that solves the problem.

58rennur4

iTrader: (1)

Yea let us know how it goes!

YoterHome

Ok, another question...

If the cam is 180 out if time from the crank, will it run (very poorly) at all?

HappyCamper

I just ordered one from toyotapartsdeal.com in norwalk CA and they had it in stock (2nd gen 22RE). Not cheap though.

22230-35030 VALVE ASSY, AUXILIARY $212.34

I would try adjusting your TPS first though, it had fixed my surging idle previously. I used 4crawler's writeup.

58rennur4

iTrader: (1)

1st gen not available. 22230-35010

HappyCamper

sorry to hear not available; i guess you're limited to one from the recyclers. i've used row52 when i haven't had luck at my local wreckers.

* * *

This part fits the listed vehicles and their options:
Model Year Trim Engine Important vehicle option details
4runner
1984-1989
DLX, SDT, SR5, SR5 Turbo, STD
4 Cyl 2.4L
22REC, 22RTEC; RN50, RN55, RN60, RN61, RN65, RN66, RN70, RN75
Celica
1982-1985
GT, GTS, ST
4 Cyl 2.4L
22REC; RA64, RA65
Pickup
1984-1989
DLX, SDT, SR5, SR5 Turbo, STD
4 Cyl 2.4L
22REC, 22RTEC; RN50, RN55, RN60, RN61, RN65, RN66, RN70, RN75

58rennur4

iTrader: (1)

Oh I'm golden i got 3 used spare ones just not available new anymore. I took them all apart, cleaned, anti-seized screws, rust converted, and adjusted.


I'm more wondering about your truck and surge issue. Looking forward to hear the results and hopefully a success story.

YoterHome

So as some if you may know I recently put a new head on our 22re Toy along with a new water pump, oil pump, timing chain (w/metal guides and tensioner) and a new Throttle positioning sensor. After all of that work we drove it around town for a few days and then it sat in the back yard while we finished/ are finishing up the interior. In that month of siting I replaced the mid pipe of the exhaust out to a new one and have been starting it up and running it to keep it used to being ran. Now, it has an erratic idle and when you push the breaks it all but stalls out 😩 I'm ready to pay someone to diagnose and fix it, unless one of you here have experienced the same issues. Thank you in advance and for all the help you've already been 😃

Terrys87

iTrader: (1)

Try burping the system. Raise the front end as high as possible, I am 6 foot and get the core support up to my chin. Being a motor home you wont be able to get it that high but you should still get the idea of what you want to do. After getting it high, run the motor with out the radiator cap and let it cycle the thermostat 3 or 4 times to get the air out of the system. Air in the system will cause erratic idling.

YoterHome

Thanks Terry! I'll have to give that a shot when I get off work.