WTF Now
Sep 24, 2016 | 04:19 AM
#1
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WTF Now
So I am in the middle of a code P0235 on our 2002 highlander (bank 1 knock sensor) and now have a major failure on the 95 4Runner 3VZE. The rig was running fine but may have had a small back fire (not confirmed) and is now running crazy rich and sounds like the cams just got a lot bigger. It will idle when cold but not when warm unless you push the gas. Seems to still have decent power and good oil pressure. I suspect it's the 02 sensor, TPS, or VAFM.
Normaly this would not be a big deal but I am already $300 into the highlander and have not had any time to address the 4Runner as of yet.
Normaly this would not be a big deal but I am already $300 into the highlander and have not had any time to address the 4Runner as of yet.
Sep 24, 2016 | 07:22 AM
#2
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From: I live in New Tripoli Pa out in the woods
Welcome to my World it happens all to often
Mechanical things break and it seems all at the same time
Blow out the muffler or Cat from gasoline vapors getting into the exhaust from a bad cylinder for what ever reason
Mechanical things break and it seems all at the same time
Blow out the muffler or Cat from gasoline vapors getting into the exhaust from a bad cylinder for what ever reason
Sep 24, 2016 | 08:45 PM
#5
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From: Arkansas
It could be the o2 sensor. It could be any of several things. Sounds like it's idling when cold because it is in open loop mode until it warms up and then starts making fuel mix adjustments based on some kind of bad input to the ECM. I would think you would have a check engine light on. Do you? If so, test for codes and report back.
Sep 27, 2016 | 08:50 AM
#6
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Found the issue.
VAFM door was stuck wide open even after being removed from the truck. I was able to free the door but i think it's about time for a replacement. On the positive side I did put it back on the truck and she is running again.
VAFM door was stuck wide open even after being removed from the truck. I was able to free the door but i think it's about time for a replacement. On the positive side I did put it back on the truck and she is running again.
Sep 27, 2016 | 09:30 AM
#7
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From: Arkansas
They are pretty expensive. If it's working then it's probably ok to run for now. You can get you a can of MAF spray cleaner at a parts house for a few bucks and give it a gentle cleaning. May just be some dust in the linkage that needs cleaned out.
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Sep 27, 2016 | 09:37 AM
#8
Thanks atcfixer. Here is the thread related to the VAFM so we don't get this one to off topic. https://www.yotatech.com/forums/f116/wtf-now-296940/
I am running a 7MGE supra VAFM however the door was stuck wide open and I think it's just worn out.
As far as the hubs go I was told they came off a IFS truck when the owner did a SAS conversion on his 88.
I am running a 7MGE supra VAFM however the door was stuck wide open and I think it's just worn out.
As far as the hubs go I was told they came off a IFS truck when the owner did a SAS conversion on his 88.
I agree with Charchee, dust and dirt can hinder the flap. I personally haven't had that problem, but read it working in the past. If you move the door manually do you hear scraping/scratching type of noises or does it sound relatively smooth?
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