gs400 no overdrive????
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Hey guys, First post here. Well this is my issue, i just bought a 1998 gs400 yesterday, and its running at 2600rpm at 65mph, that seems a tad high for this ride, I have no lights on the dash and everything works great. Tranny shifts perfect. What could be the issue? I have done the research and it looks like the either a knock sensor or a sensor that tells the car it is warmed up. what are my options here? as i dont want to take it to a dealer and spend 500 bucks for nothing.....
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#4
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Haven't drove the GS at high speed for too long that I already forgot, GS is 5 spd auto, your 400 should have M mode that allows you to partly shift gears, if you're on highway, in M mode "5", press down to 4, and you feel the shift to higher rpm, then there you go.
remember, it's a 98 car, at that time, they aren't concerned as much to fuel economy just yet.![Stick Out Tongue](https://www.clublexus.com/forums/images/smilies/tongue.gif)
edit see my post below,
remember, it's a 98 car, at that time, they aren't concerned as much to fuel economy just yet.
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edit see my post below,
Last edited by Solo_D33A; 12-14-10 at 12:55 AM.
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yeah your car is normal. the gearing is made like that cuz they wanted you to get to max speed faster than if you were trying to get to 110 or w/e so each gear shifts a little higher than what you would expect it to be. if im wrong correct me
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wow!! im used to around 2k in my 2002 z28, i guess that im at with 2600rpm at 70 or so. damn the gas mileage tho!!!! almost half a tank at around 100 miles, BUT i havent been nice to the gas pedal eaither.....
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#11
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All above makes sense, you should be around 2200rpm at 65mph. I am at 3000rpm at 80mph AND I have aggressive gearing (3.73 versus the stock 3.26). As mentioned earlier you are most likely not shifting into 5th gear. VERY easy checks are:
re-set the car's ecu and re-test
and
check tranny fluid levels...eventhough the car seems to be shifting good all it takes is to be 1qt too ow and strange things happen in our trannies. Also, it wouldn't be a bad idea to change the fluid AND the tranny filter; the filter could be clogged...GL!
re-set the car's ecu and re-test
and
check tranny fluid levels...eventhough the car seems to be shifting good all it takes is to be 1qt too ow and strange things happen in our trannies. Also, it wouldn't be a bad idea to change the fluid AND the tranny filter; the filter could be clogged...GL!
#14
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to reset ecu, take the positive or negative terminal out, try hazards and brake to drain power in system, leave for a few minutes should be enough. then plug things back in.
if you felt it shifted into 5th, your car may have a different diff? lol LSD maybe? hahahaha
or... your tranny might be slipping
if you felt it shifted into 5th, your car may have a different diff? lol LSD maybe? hahahaha
or... your tranny might be slipping