03-09-2023, 04:15 PM
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#1
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Transmission slipping; quick question please
Hi Guys! I have a 2002 T4R Limited 4WD with 283,000 miles on it. I did a transmission fluid and engine oil analysis a year ago with Blackstone Labs and the engine oil analysis came back clean - no signs of excessive engine wear but the transmission fluid analysis said there was excessive signs of wear to the point it might already be slipping.
The trans finally started slipping about 2 weeks ago and the truck went into "limp mode" - meaning I can't get the RPM above 1500 RPMs - but the Check Engine Light is not throwing any codes. If the Transmission is slipping shouldn't there be a transmission related CEL code?
Thank you all in advance.
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2002 T4R Limited 4x4 w/factory locker, factory supercharger, sunroof, deck plate mod, Tundra brake upgrade, BFG TA/KOs on 17" TRD rims, automatic transmission, 3" lift from Toytec with "Old Man Emu" heavy duty shocks & springs, 288,000 miles on it, I live outside Steamboat Springs, Colorado.
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03-09-2023, 05:15 PM
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#2
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Join Date: Feb 2015
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Quote:
Originally Posted by SgtAbn
Hi Guys! I have a 2002 T4R Limited 4WD with 283,000 miles on it. I did a transmission fluid and engine oil analysis a year ago with Blackstone Labs and the engine oil analysis came back clean - no signs of excessive engine wear but the transmission fluid analysis said there was excessive signs of wear to the point it might already be slipping.
The trans finally started slipping about 2 weeks ago and the truck went into "limp mode" - meaning I can't get the RPM above 1500 RPMs - but the Check Engine Light is not throwing any codes. If the Transmission is slipping shouldn't there be a transmission related CEL code?
Thank you all in advance.
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Your trans slipping isn't necessarily going to generate a CEL code. Regardless, you're due for a rebuilt or used transmission.
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"My old man is a television repairman, he's got this ultimate set of tools. I can fix it!"
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03-09-2023, 05:20 PM
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#3
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The 2001-2002 model years have a more sophisticated electronically controlled transmission than older years. The only thing that can cause the transmission to slip is the transmission itself, and I include the torque converter as part of it. It is most definitely the transmission failing and I believe the weak point for the 2002 year is the planetary gear.
At this point, regardless of codes, I think you should get a second opinion by a trusted shop and then look into replacing the transmission. Used is the least expensive route (which I completed in my garage in October) but the most risk as I might find myself doing it again in the near future. The cost of a rebuild isn't worth it in my opinion though and Toyota doesn't sell transmissions new for 1998 4WD models. It would be worth checking to see if they still sell remanufactured or new transmissions for your model year and drivetrain.
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03-09-2023, 05:31 PM
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#4
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01-02 Trans have been discontinued Reman or new at dealer.
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03-09-2023, 06:01 PM
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#5
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I didn't realize a transmission issue could put the vehicle in "limp mode".
Have you checked for codes with an OBDII reader?
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2000 4runner 4wd Auto V6 - Tru-Cool LPD4454 trans cooler in series
1991 4runner 4wd Auto V6
1990 4runner 4wd Auto V6
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03-09-2023, 09:13 PM
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#6
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Quote:
Originally Posted by 96RedRunner
01-02 Trans have been discontinued Reman or new at dealer.
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That's a shame. The fact that they are no longer offered means there will be many 4Runners sent to the junkyards due to the cost of transmissions shops. Many charge $4,000+ for a transmission rebuild.
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03-09-2023, 11:18 PM
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#7
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Yota1 out of Riverbank, CA can build one for $2650 +400 for core. Mine now has about 1500 miles and it purrs like a kitten.
Problem for most will be shipping. Then it gets worse when you want to get the core money back, they will charge shipping against that money, yet if nearby it is very much a way to go. Luck all.
Yota1 Performance Engine & Machine - Your Toyota needs all in one place!
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2001 Limited 4WD - 346+K - SunfireRed\Thunder Cloud; - 265/75/16 Michelin A/T2s - Fat Pat's 1.5" BL - StopTech ANGLED rotors - In series 699 trans cooler, New Yota1 transmission, All new OEM suspension front to rear.
Last edited by jgue467; 03-11-2023 at 09:19 AM.
Reason: added url
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03-10-2023, 12:01 AM
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#9
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Quote:
Originally Posted by gamefreakgc
That's a shame will be many 4Runners sent to the junkyards.
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Yes it is though it could be a boon for those with skills, let's hope they hit the market.
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03-11-2023, 02:02 AM
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#10
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Member
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Join Date: Aug 2009
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Member
Join Date: Aug 2009
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Real Name: Jerry Kraus
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Thank you all for the feedback
Thanks guys for all the feedback
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2002 T4R Limited 4x4 w/factory locker, factory supercharger, sunroof, deck plate mod, Tundra brake upgrade, BFG TA/KOs on 17" TRD rims, automatic transmission, 3" lift from Toytec with "Old Man Emu" heavy duty shocks & springs, 288,000 miles on it, I live outside Steamboat Springs, Colorado.
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03-28-2023, 04:07 PM
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#11
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Member
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Join Date: Aug 2009
Location: Craig, CO
Posts: 108
Real Name: Jerry Kraus
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Member
Join Date: Aug 2009
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Real Name: Jerry Kraus
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Quote:
Originally Posted by alumarine
I didn't realize a transmission issue could put the vehicle in "limp mode".
Have you checked for codes with an OBDII reader?
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Yes I checked codes with reader, I found out about "limp mode" by reading other posts on here. This site is fantastic!
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2002 T4R Limited 4x4 w/factory locker, factory supercharger, sunroof, deck plate mod, Tundra brake upgrade, BFG TA/KOs on 17" TRD rims, automatic transmission, 3" lift from Toytec with "Old Man Emu" heavy duty shocks & springs, 288,000 miles on it, I live outside Steamboat Springs, Colorado.
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03-29-2023, 09:30 AM
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#12
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Senior Member
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I lied the other day.
Was surfing Amayama last night, yahoo, I can get a new Trans for my 01.
$5500.00 $1k shipping.
Last edited by 96RedRunner; 03-29-2023 at 10:47 AM.
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03-29-2023, 10:28 AM
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#13
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Quote:
Originally Posted by gamefreakgc
The 2001-2002 model years have a more sophisticated electronically controlled transmission than older years. The only thing that can cause the transmission to slip is the transmission itself, and I include the torque converter as part of it. It is most definitely the transmission failing and I believe the weak point for the 2002 year is the planetary gear.
At this point, regardless of codes, I think you should get a second opinion by a trusted shop and then look into replacing the transmission. Used is the least expensive route (which I completed in my garage in October) but the most risk as I might find myself doing it again in the near future. The cost of a rebuild isn't worth it in my opinion though and Toyota doesn't sell transmissions new for 1998 4WD models. It would be worth checking to see if they still sell remanufactured or new transmissions for your model year and drivetrain.
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For the standard OBDII DTC set incorrect gear ratio for “X” gear would be produced if say 3rd gear clutch pack was slipping.
The TC I don’t think has a slipping code.
However, it’s a lot of work replacing the TC just to see if it’s the cause with that many miles on it.
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