Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS
Sponsored by:
Sponsored by: DashLynx

02 sensor bad? Help!!

Thread Tools
 
Search this Thread
 
Old 07-03-2013, 06:45 AM
  #1  
Registered User
Thread Starter
 
etont's Avatar
 
Join Date: Nov 2012
Posts: 60
Received 0 Likes on 0 Posts
02 sensor bad? Help!!

Hi guys,

Ive done quite a bit of work on my 86 22re 4runner in the past couple of months trying to get it to pass smog. Now the thing wont even idle and I am thinking it is the 02 sensor. I have:

Timing
Adjusted valves
New plugs and wires
Fixed a cracked exhaust manifold and shot gaskets

After adjusting the valves, the car ran much better.
After changing the plugs and wires, and all the exhaust leaks the car wont even idle and runs with no power, and almost like its on 3 cylinders.

Could a bad 02 sensor do this? I am thinking that before I fixed all the exhaust leaks, there was so much atmospheric air getting into the exhaust that the barely functioning 02 sensor was working. Now that there is no more atmospheric air getting into the exhaust, the car is running like sh**

Help!? is there anything else it could be? 02 sensors are kind of expensive and would like to know that it IS the problem before I go out and buy one...

Thanks!
Old 07-05-2013, 02:53 PM
  #2  
Registered User
 
Fordless's Avatar
 
Join Date: Feb 2013
Location: Alabama
Posts: 64
Likes: 0
Received 0 Likes on 0 Posts
Did you accidently cross wire it?
It's unlikely that an o2 sensor would cause this. At least in my experience.
Old 07-05-2013, 03:00 PM
  #3  
Registered User
Thread Starter
 
etont's Avatar
 
Join Date: Nov 2012
Posts: 60
Received 0 Likes on 0 Posts
I figured it out... the IAC was stuck. Opened it up, drove around the block, became un-stuck, readjusted the idle, runs like a champ now!

How/what do you adjust the idle to w/o a tach?

Thanks,
E
Old 07-05-2013, 03:38 PM
  #4  
Registered User
 
scope103's Avatar
 
Join Date: Sep 2007
Location: San Francisco East Bay
Posts: 8,254
Likes: 0
Received 822 Likes on 649 Posts
You could just make a wild guess.

Or, given that you've already invested a "couple months" of work, you could spring for $40 and get the right tool http://www.harborfreight.com/lcd-aut...kit-95670.html

[Since this is also a multimeter, if you get an electrical problem you won't be asking "how can I fix this if I don't have a multimeter."]
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
sandyota
84-85 Trucks & 4Runners
18
02-04-2021 11:16 AM
raptor510
86-95 Trucks & 4Runners
19
02-17-2017 07:11 AM
nonstop
Newbie Tech Section
3
07-24-2015 06:29 PM
Steven.m.paulk
86-95 Trucks & 4Runners (Build-Up Section)
3
07-24-2015 01:44 PM
greenbuggy
3.4 Swaps
4
07-23-2015 11:51 AM



Quick Reply: 02 sensor bad? Help!!



All times are GMT -8. The time now is 02:29 PM.