Rev/Rpm Problem~~ - Toyota Nation Forum : Toyota Car and Truck Forums

a94autoCamry · 06-16-2005, 03:28 PM

i got a problem with my 1994 camry 5sfe automatic...

i noticed that when i let go of the gas pedal when coming to a stoplight or when i want to slow down....the rpm's would drop normally to around 1000-1100 rpms...but then when it reaches that number....the engine rev's would go up like about 100-200 rpms and then drop back down.... i also notice that when i brake as well, the car would jump about 100-200 rpms and then it would go back to normal idling...

the rev's would go up and i'm not even stepping on the gas pedal ~

even when the engine is warmed up all the way, the rev's would still go up about 100-200 rpms... then it will go back to normal..

the engine seems to idle fine at a complete stop at around 800 rpms...

any suggestions on what causes this problem or how to fix it??
i hope the tranny isnt going bad or something???

88 LE · 06-16-2005, 05:00 PM

Since the idle is controlled by the IAC. I would start by cleaning it and the throttle body and see if it gets better.

a94autoCamry · 06-16-2005, 07:35 PM

thx for reply 88LE... cleaning the throttle body is what i was thinking but i never thought about the IAC..... ill clean them up sometime

thx~~

-Andy

rusty9 · 06-16-2005, 08:00 PM

seems like it only happens when youre on the brakes, could be master cylinder or the booster. if its not the IAC that is.

terrastrife · 06-17-2005, 10:34 AM

IAC, mines doing it too.

***Your Uncle Moe*** · 06-17-2005, 03:14 PM

Wait a minute. When your driving and let go of the gas; the RPM goes up a few hundred RPM and then goes back down while your slowing down? Wouldn't that be the tranny downshifting normally??

FrankXT86 · 06-17-2005, 04:45 PM

Quote:

Originally Posted by Gridlyne

Wait a minute. When your driving and let go of the gas; the RPM goes up a few hundred RPM and then goes back down while your slowing down? Wouldn't that be the tranny downshifting normally??

Yeah...tranny shifting out of overdrive and downshifting into a lower gear

whocares04 · 06-17-2005, 05:57 PM

^^^and b/c it's an automatic it's really smooth (depending on the situation) so u might not know that it downshifted unless u watch the rpms...

acs72727 · 06-17-2005, 08:02 PM

mine does it too