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Re: Help on engine codes 25 [Re: Noel] #792284 02/27/07 07:21 AM
Joined: Oct 2002
Posts: 15,887
kewlynx Offline
Toyota & Classifieds Moderator
*****
Check your TPS setup, and make sure that the air tube is on snug and not leaking, given you just had it off.

Carb cleaner that is safe for sensors is recommended over Brakleen btw. <img src="/forums/images/graemlins/notooth.gif" alt="" />


http://www.walkablecommunities.org/

Democracy is two wolves and a lamb voting on what to have for dinner. Liberty is a well-armed lamb contesting the vote.

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Re: Help on engine codes 25 [Re: kewlynx] #792285 02/27/07 07:35 PM
Joined: Sep 2002
Posts: 20
N
Noel Offline OP
Need a Spot
Thanks for the input, bought carb cleaner and resprayed. I just discovered a 1.5-inch crack on the rubber pipe that directly connects to the TB - used electrical tape to temporarily seal it. Reset EFI fuse and will test drive again in a bit. Gas mileage sucks, still rough idle. TPS connection is OK.


1990 4Runner
1993 4Runner
1995 4Runner Limited
1999 Mustang Cobra
2001 Sport Trac
Re: Help on engine codes 25 [Re: Noel] #792286 02/27/07 10:38 PM
Joined: Sep 2002
Posts: 20
N
Noel Offline OP
Need a Spot

... back to codes 25 and 26 <img src="/forums/images/graemlins/frown.gif" alt="" />


1990 4Runner
1993 4Runner
1995 4Runner Limited
1999 Mustang Cobra
2001 Sport Trac
Re: Help on engine codes 25 [Re: Noel] #792287 02/28/07 03:12 AM
Joined: Jan 2001
Posts: 11,595
Adam F Offline
Forum Moderator
Replace cracked hose <img src="/forums/images/graemlins/shame.gif" alt="" /> Electrical tape won't seal it.


88 4R, 350 V8, R150 5 speed Sold <...uot; />
97 4R, stock, daily driver
98 Sienna, kid and dog hauler, wife's ride
Re: Help on engine codes 25 [Re: Adam F] #792288 02/28/07 04:16 AM
Joined: May 2002
Posts: 186
J
jmsdad Offline
Wheeler
Compression test first and then leak down. I bet one of the cylinders ain't firing. Report back after the tests.

Re: Help on engine codes 25 [Re: jmsdad] #792289 02/28/07 06:21 AM
Joined: Sep 2002
Posts: 20
N
Noel Offline OP
Need a Spot

Thanks for the input, JMSdad. I see you're from the bay area also. <img src="/forums/images/graemlins/smile.gif" alt="" />


1990 4Runner
1993 4Runner
1995 4Runner Limited
1999 Mustang Cobra
2001 Sport Trac
Re: Help on engine codes 25 [Re: Noel] #792290 03/02/07 08:28 PM
Joined: Aug 2001
Posts: 2,941
DRTDEVL Offline
J
Roll Me Over
*****
Quote
Thanks for the input, bought carb cleaner and resprayed. I just discovered a 1.5-inch crack on the rubber pipe that directly connects to the TB - used electrical tape to temporarily seal it. Reset EFI fuse and will test drive again in a bit. Gas mileage sucks, still rough idle. TPS connection is OK.


This is your problem...

With a cracked pipe, unmetered air can enter the system... This causes the lean code.

The computer compensates.

Then, the crack seals temporarily... This creates a sudden rich condition. The rich code is set.

Get a new intake hose.


"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).
Re: Help on engine codes 25 [Re: DRTDEVL] #792291 03/06/07 04:19 PM
Joined: Sep 2002
Posts: 20
N
Noel Offline OP
Need a Spot
... replaced O2 sensor - bolts easily came out after 2 days of PB soaking.
... replaced cap, distributor, wires, some spark plugs <img src="/forums/images/graemlins/confused.gif" alt="" />
... #1 plug frozen - it won't budge; #5 is just unreachable for me -
... I'll let my mechanic do it when doing a compression checked
... and leak down testing
... then off to the junk yard to find rubber hose, driver side wiper arm
... and some other stuff ...
... code is now 25


1990 4Runner
1993 4Runner
1995 4Runner Limited
1999 Mustang Cobra
2001 Sport Trac
Re: Help on engine codes 25 [Re: Noel] #792292 03/07/07 04:23 PM
Joined: Sep 2002
Posts: 20
N
Noel Offline OP
Need a Spot

... decided to remove the throttle body for cleaning
... and TPS adjustment - ordered screws upgrade
... and TB gasket (special order)
... after which - compression/leakdown test


1990 4Runner
1993 4Runner
1995 4Runner Limited
1999 Mustang Cobra
2001 Sport Trac
Re: Help on engine codes 25 and 26 [Re: Noel] #792293 03/08/07 07:15 AM
Joined: Feb 2007
Posts: 10
T
Tundra_Mac Offline
Need a Spot
So, how'd the repairs go? Say, does anyone know if you can get long-term damage because of 02 problems?


_________________
2005 Toyota Tundra Accesorios - Tundra 4x2 06 Catalog by Toyota Motors

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