Notices
SC - 1st Gen (1992-2000)

quick question

Thread Tools
 
Search this Thread
 
Old Apr 5, 2011 | 09:41 PM
  #1  
LPA's Avatar
LPA
Thread Starter
Driver School Candidate
 
Joined: Nov 2010
Posts: 39
Likes: 0
From: la
Default quick question

What do #1 and #2 solenoids control in the transmission?
Its a 97 sc400
Reply
Old Apr 5, 2011 | 10:09 PM
  #2  
DangerDave's Avatar
DangerDave
Driver School Candidate
 
Joined: Sep 2010
Posts: 17
Likes: 0
From: Washington
Default

They probably control shifting from 1st through 3rd gears.
Reply
Old Apr 5, 2011 | 10:53 PM
  #3  
LPA's Avatar
LPA
Thread Starter
Driver School Candidate
 
Joined: Nov 2010
Posts: 39
Likes: 0
From: la
Default

if thats correct then i might have found my problem...can anyone verify this?
Reply
Old Apr 5, 2011 | 11:02 PM
  #4  
LPA's Avatar
LPA
Thread Starter
Driver School Candidate
 
Joined: Nov 2010
Posts: 39
Likes: 0
From: la
Default

**** i was looking at a hand drawn diagram of what the apropriate number for each solenoid is, but then i came across another drawing that is a real diagram out of a book or something. So now im confused, are the big solenoids 1 and 2 or is it the small ones?
Reply
Old Apr 6, 2011 | 10:22 AM
  #5  
LPA's Avatar
LPA
Thread Starter
Driver School Candidate
 
Joined: Nov 2010
Posts: 39
Likes: 0
From: la
Default

Ok i found the correct numbering for the solenoids, the 2 small ones are #1 and #2 and the 2 Big solenoids are #3 and #4. Do the 2 Big solenoids have anything to do with shifting or making the trans down shift?
Reply
Old Apr 11, 2011 | 02:45 PM
  #6  
DangerDave's Avatar
DangerDave
Driver School Candidate
 
Joined: Sep 2010
Posts: 17
Likes: 0
From: Washington
Default

Yes, all the solenoids control an assigned up or downshift. Do you know how to check the resistance of each solenoid to determine if it is good or bad? You have to drain all the transmission fluid out and then remove the transmission pan to gain access to the solenoids.

It's possible to have good solenoids but one of the fluid passageways might be blocked. If that's the case you're probably going to need a rebuilt transmission.

If you decide to drop the pan and check solenoid resistance you can also apply power and ground to each solenoid and listen for a "click" to see if the solenoid is stuck open or closed.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Reveal54
SC - 1st Gen (1992-2000)
0
Apr 26, 2015 07:40 PM
Grouchy
LS - 4th Gen (2007-2017)
10
Jan 27, 2013 06:38 AM
spurge
SC - 1st Gen (1992-2000)
9
Sep 12, 2011 02:43 PM
rg_gibson
Maintenance
5
Feb 4, 2007 12:13 PM
SC4 92
SC - 1st Gen (1992-2000)
3
Aug 12, 2005 10:29 AM




All times are GMT -7. The time now is 01:41 AM.

story-0
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE
story-1
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

Slideshow: How to Get the Best Fuel Economy with a Hybrid and Plug-In Hybrid!

By Michael S. Palmer | 2026-05-05 20:54:44


VIEW MORE
story-2
10 Best Lexus Models No One Remembers

Slideshow: 10 best Lexus models no one remembers.

By Joe Kucinski | 2026-05-05 17:33:28


VIEW MORE
story-3
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

Slideshow: diving into 4Runner TRD Off-Road Premium's pricing, performance, fuel economy, features, and amenities!

By Michael S. Palmer | 2026-04-23 13:09:18


VIEW MORE
story-4
Top 10 Lexus & Toyotas to Drive Before You Die!

Slideshow: the 10 Lexus and Toyota vehicles you need to drive before you die.

By Joe Kucinski | 2026-04-23 10:34:24


VIEW MORE
story-5
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

Slideshow: Top 10 Lexus/Toyota models with the lowest 5-year depreciation rate.

By Joe Kucinski | 2026-04-08 12:19:06


VIEW MORE
story-6
Lexus LC500 Convertible Auction: A Preview of Rising Values?

The LC hasn't even disappeared from the Lexus lineup yet, and we're already seeing signs of an explosive market.

By Brett Foote | 2026-04-06 09:25:02


VIEW MORE
story-7
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

Slideshow: comparing the pricings, specs, power, fuel economy, fun-factor, and features of the GX 550 Luxury+ and TX 550h+ Luxury.

By Michael S. Palmer | 2026-03-19 13:44:11


VIEW MORE
story-8
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

Slideshow: 9 best Lexus models you can buy for half price and 1 you should avoid

By Joe Kucinski | 2026-03-19 12:01:07


VIEW MORE
story-9
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

Here's everything you need to know about the latest NX.

By Brett Foote | 2026-03-19 11:56:59


VIEW MORE