Lexusdad

iTrader: (1)

Quick question guys, I couldn't find it using Search.

On a 93 SC300, auto trans, what are your RPM's vs indicated speed? On mine, it shows exactly 1750 RPM's (third line above the 1) at 50 mph. Is this correct? What are you guys with SC3's showing at 50, 55, 60 mph?

Thanks for the help.

Jim

5sp_jzz30

iTrader: (2)

one of the few questions i have absolutely no experience with

ill bump it for you. maybe people will respond.

Lexusdad

iTrader: (1)

Thanks JZZ30. Additional bump to see what happens.

Jim

Sup2jzgte

I have been wondering the samething. I dont know about 50 MPH I never noticed at that speed, but at 60-85 my RPM's are just below 3k...................i'm wondering if this is normal or not. Tomorrow on my way to work I will check and see where my car is at 50.

I swear I saw a schematic somewhere with this info on it I just cant remember where is was

CCC-TT

iTrader: (1)

I know that at 80 im around 3k, at 50, 1.75k should be right.

Kaydee

don't know the answer but I'm kind of annoyed that for the 4-speed auto, the rpm goes pretty high for highway driving...makes highway cruising above 60 mph feel like a chore

need a freaking 5th gear bad!!

Sup2jzgte

LOL I know the feeling. Between the exhaust leak I have and the engine revving so high at fairly low speeds evey car I pass thinking I'm trying to race em lol, its actually kind funny.

Sup2jzgte

Well at 50-55MPH my car sits at 2100RPM 55-65MPH 2400RPM, so I'm not sure if this is good or bad.

Lexusdad

iTrader: (1)

Thanks for the response guys, I appreciate the feedback. Just for clarification, my (actually my daughter drives it) SC3 is bone stock, 15inch wheels with factory sized tires. I was wondering because I read a thread where guys were discussing haveing a SC4 cluster in a SC3, and the associated problem with the RPM's reading correctly.

Also, this car shifts out at around 5800 rpm's when you bury your foot. I believe the car redlines at 6500 rpm's. It sounds like it is reving higher, but the gauge indicates otherwise. That is starting from a dead stop, and absolutely trying to push your foot thru the floorboard. The car runs fantastic other than this small issue. Thanks for the feedback guys.

Jim

BigWaveSC

iTrader: (5)

when your idling is the needle where it should be?
because mine at idle is at 0 rpm's, so I'm pretty sure mine is off.

AD_SC3

iTrader: (1)

Yea when I first got mines, I thought there was some thing wrong with my transmission.

Aren't like the 97+ a 5 speed

Lexusdad

iTrader: (1)

BigWave, it seems to show on the second mark up from zero at idle. I will need to check this out this weekend. Thanks for the feedback.

Jim

YeA 2jZ

iTrader: (15)

i have been havin some trans issues so speed vs. rpm i have been watchin alot thes past few days and from what i seen around 80mph im at 3300 rpm at 60 i am at about 2700 rpm i idle at about 500 rpm i have a 92 sc300 auto (really startin to hate it)