98 LS400 ACV Location?
11-04-18, 07:39 PM
#1
Driver School Candidate
Thread Starter
98 LS400 ACV Location?
Hello all, ive been searching hard but im having trouble finding the acv valve on my ls400, as the tutle states its a 98, ive been having low idle issues and i also have a power steering leak so im thinking its this valve. Thanks for the help!
11-04-18, 08:36 PM
#2
Moderator
A 98 doesn't have any ACV or something similar. The idle RPM is fully controlled by the throttle valve and the ECU targeting 750RPM. But when one of these or some injectors are not in good condition, the idle speed can't be controlled well as well as the AT shift from 1st to 2nd gear is not done well.
Search the Forum and you'd find many people have asked the same questions. Many of them became happy and also they were a bit amazed how the AT works well after cleaning the throttle body and the air mix passages thoroughly.
Search the Forum and you'd find many people have asked the same questions. Many of them became happy and also they were a bit amazed how the AT works well after cleaning the throttle body and the air mix passages thoroughly.
Last edited by Yamae; 11-04-18 at 08:40 PM.
11-05-18, 02:39 AM
#3
Driver School Candidate
Thread Starter
I had already cleaned the throttle body before, maybe about 2 months ago and not much changed, so i was wondering if it ended up being a problem somewhere along the vacuum tubes or valves, ill clean it again and will change out the vacuum tubes aswell, any chance you know the inside size of the tubes?
11-06-18, 03:35 AM
#4
I had already cleaned the throttle body before, maybe about 2 months ago and not much changed, so i was wondering if it ended up being a problem somewhere along the vacuum tubes or valves, ill clean it again and will change out the vacuum tubes aswell, any chance you know the inside size of the tubes?
Edit: They are on a 96.
11-06-18, 03:37 AM
#5
Driver School Candidate
Thread Starter
I'm sorry I can't tell you the size but get fuel lines. At least at Advance, their vacuum hoses are super weak. I used them once, went back for fuel lines. Cut off a small piece of a vacuum line and compare the hole. The fuel line will be thicker obviously. The good thing - I think they're all the same size.
Edit: They are on a 96.
Edit: They are on a 96.
Thread
Thread Starter
Forum
Replies
Last Post
saleenssc
LS - 1st and 2nd Gen (1990-2000)
17
10-15-16 04:21 PM
sulliman
LS - 1st and 2nd Gen (1990-2000)
29
04-15-13 05:08 PM
Live4brew
LS - 1st and 2nd Gen (1990-2000)
17
01-12-07 04:32 PM