CEL... and questions..
Sep 23, 2005 | 03:49 PM
#1
Thread Starter
Registered User
Joined: Sep 2003
Posts: 162
Likes: 0
From: Tucson, AZ
CEL... and questions..
Hi all,
My check engine light came on about 2 weeks ago..Today was the first time I had to try and work on it. I took it to AutoZone and had them check what code it was throwing. heres what it read: PO 171 (too lean) I got that twice and PO 172 (too Rich).. So from what I read it could be the O2 sensor correct.. Autozone wants 130 bucks for each one..
Today, I did the recommended things.. Clean the MAF, and foam Airfilter... I also cleaned the TB. but my light is still on. Should I wait a while to see if the MAF starts reading correctly? should I buy teh O2 sensors? I need 2 right? Wheres a better place to buy them? any suggestions and Help would be appreciated..
I have a 2000 4runner V6 Auto.. with an Amsoil Airfiter.
My check engine light came on about 2 weeks ago..Today was the first time I had to try and work on it. I took it to AutoZone and had them check what code it was throwing. heres what it read: PO 171 (too lean) I got that twice and PO 172 (too Rich).. So from what I read it could be the O2 sensor correct.. Autozone wants 130 bucks for each one..
Today, I did the recommended things.. Clean the MAF, and foam Airfilter... I also cleaned the TB. but my light is still on. Should I wait a while to see if the MAF starts reading correctly? should I buy teh O2 sensors? I need 2 right? Wheres a better place to buy them? any suggestions and Help would be appreciated..
I have a 2000 4runner V6 Auto.. with an Amsoil Airfiter.
Sep 23, 2005 | 03:53 PM
#2
Contributing Member
Joined: Dec 2003
Posts: 4,586
Likes: 1
From: Richland, Washington
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
So you are correct. I haven't had to deal with the check engine light on only due to I don't think mine actually works, but, to turn the light off, you need to reset it to see if any of the changes you made fixed the problem. I'm sure if you run a search, you can figure out how to do that.
P0172 System too Rich (Bank 1)
So you are correct. I haven't had to deal with the check engine light on only due to I don't think mine actually works, but, to turn the light off, you need to reset it to see if any of the changes you made fixed the problem. I'm sure if you run a search, you can figure out how to do that.
Sep 23, 2005 | 04:22 PM
#3
Thread Starter
Registered User
Joined: Sep 2003
Posts: 162
Likes: 0
From: Tucson, AZ
Originally Posted by EWAYota
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
So you are correct. I haven't had to deal with the check engine light on only due to I don't think mine actually works, but, to turn the light off, you need to reset it to see if any of the changes you made fixed the problem. I'm sure if you run a search, you can figure out how to do that.
P0172 System too Rich (Bank 1)
So you are correct. I haven't had to deal with the check engine light on only due to I don't think mine actually works, but, to turn the light off, you need to reset it to see if any of the changes you made fixed the problem. I'm sure if you run a search, you can figure out how to do that.
1) first suggestion.. yank and place back in the EFI Fuse.. did that.. still have a CEL on..
2) 2nd suggestion.. remove Neg cable from battery terminal for a few mins..
Im currently trying that out.. I'll post back later my results.
thanks for the suggestion.
Sep 24, 2005 | 05:03 AM
#4
Registered User
Joined: Nov 2002
Posts: 1,066
Likes: 0
From: Far western Kentucky (transplanted from central PA)
Originally Posted by rondo221
Thanks did a search..
1) first suggestion.. yank and place back in the EFI Fuse.. did that.. still have a CEL on..
2) 2nd suggestion.. remove Neg cable from battery terminal for a few mins...
1) first suggestion.. yank and place back in the EFI Fuse.. did that.. still have a CEL on..
2) 2nd suggestion.. remove Neg cable from battery terminal for a few mins...
Sep 24, 2005 | 11:39 AM
#5
Thread Starter
Registered User
Joined: Sep 2003
Posts: 162
Likes: 0
From: Tucson, AZ
Ok heres whats happend..
I pulled the EFI fuse and the light didnt turn off. Then I disconnected the negative battery terminal for a few mins.. and that did the trick. also something else happend. My gas gauge, I had alway suspected was very off. It would show me at empty somewhere around 200 miles but when I'd fill up the tank it would only take about 12 gallons. So I always assumed my gauge was off or not working correctly.. because from what Ive read my 4Runner should have an 18 gallon tank right?
Well before I disconnected the battery my gauge was showing me I had hald a tank. After I reattached the battery the gauge was showing me I still had 3/4 of a tank full.. weird huh?
I pulled the EFI fuse and the light didnt turn off. Then I disconnected the negative battery terminal for a few mins.. and that did the trick. also something else happend. My gas gauge, I had alway suspected was very off. It would show me at empty somewhere around 200 miles but when I'd fill up the tank it would only take about 12 gallons. So I always assumed my gauge was off or not working correctly.. because from what Ive read my 4Runner should have an 18 gallon tank right?
Well before I disconnected the battery my gauge was showing me I had hald a tank. After I reattached the battery the gauge was showing me I still had 3/4 of a tank full.. weird huh?
Thread
Thread Starter
Forum
Replies
Last Post
andrewtexas123
84-85 Trucks & 4Runners
1
Apr 1, 2015 10:20 AM
