Home Menu

Site Navigation


Toyota 4Runner Forum - Largest 4Runner Forum > > > 88/89 4runner shifting issue
User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-07-2010, 09:17 PM #1
cwillis cwillis is offline
Junior Member
  
Join Date: Jul 2010
Posts: 12
cwillis is on a distinguished road
cwillis cwillis is offline
Junior Member
 
Join Date: Jul 2010
Posts: 12
cwillis is on a distinguished road
88/89 4runner shifting issue
my 4 runner has the following transmission symptoms:

shifts into 1,2,3,4 fast! no matter my throttle posistion
will not downshift automatically

shifts manually perfectly
all shifts firm and healthy


how do i test the tps? fsm says test ecu ports, but they are under the radio, cant get probes in there muchless see what im doing.

-----------------------------

i pulled the rubber boot off the tps and tested voltage between top two wires. i have a .1v closed and about 1 volt wide open.

-----------------------------

checked with ohmeter the top two connectors with wire harness off the sensor.

open leads with throttle shut
1.4k ohms wide open.
-----------------------------
Last edited by cwillis; 08-07-2010 at 09:30 PM.
cwillis is offline   Reply With QuoteReply With Quote
Old 08-08-2010, 02:30 PM #2
cwillis cwillis is offline
Junior Member
  
Join Date: Jul 2010
Posts: 12
cwillis is on a distinguished road
cwillis cwillis is offline
Junior Member
 
Join Date: Jul 2010
Posts: 12
cwillis is on a distinguished road
today the transmission was the same as described before.
i drove to a shopping center, and when i came out and started the truck again the transmission was perfect. it shifted at the perfect times, downshifted perfectly.

so it seems like a loose connection. but where? tps is secure!
cwillis is offline   Reply With QuoteReply With Quote
Old 08-08-2010, 02:54 PM #3
drmorbius's Avatar
drmorbius drmorbius is offline
Senior Member
  
Join Date: Jun 2007
Location: SoCal
Posts: 1,414
drmorbius is on a distinguished road
drmorbius drmorbius is offline
Senior Member
drmorbius's Avatar
 
Join Date: Jun 2007
Location: SoCal
Posts: 1,414
drmorbius is on a distinguished road
Quote:
Originally Posted by cwillis View Post
today the transmission was the same as described before.
i drove to a shopping center, and when i came out and started the truck again the transmission was perfect. it shifted at the perfect times, downshifted perfectly.

so it seems like a loose connection. but where? tps is secure!
Try following the leads from the tps down to the trans. Unplug the connector at the trans and spray the contacts both male and female with a contact cleaner. I would also do the same at the tps.
__________________
Larry
"Monsters From the Id"
2004 SR5 V6 Titanium Metallic/Stone, Auto Dimming Compass Mirror, Valor Tip, Overhead Console W/HomeLink, Cargo Net, Michelin Cross Terrains, Added JBL Synthesis 10 speaker system 6/08, USA Spec PA-15 TOY Ipod Interface, Drivers Side Overhead Handle, Valvoline Synpower 5W-30, Mobil 1 75W-90, LEDs
Last edited by drmorbius; 08-08-2010 at 03:02 PM.
drmorbius is offline   Reply With QuoteReply With Quote
Old 08-08-2010, 04:52 PM #4
cwillis cwillis is offline
Junior Member
  
Join Date: Jul 2010
Posts: 12
cwillis is on a distinguished road
cwillis cwillis is offline
Junior Member
 
Join Date: Jul 2010
Posts: 12
cwillis is on a distinguished road
thanks for that advice. i will see if i can fit down there andl\ clean those out.

by the way, 4 trips today. 3 have been perfect, one with the bad symptoms.
cwillis is offline   Reply With QuoteReply With Quote
Reply

« Previous Thread | Next Thread »

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Forum Jump

» Follow Us!!!
» Log in
User Name:

Password:

Not a member yet?
Register Now!
Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 02:10 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Toyota - 4Runner . org Forum Terms and Privacy Policy
Copyright © 2020