RPM's go down when I apply brakes!!!WTF??
03-02-2006, 04:23 PM
#1
RPM's go down when I apply brakes!!!WTF??
Hey guys, just as the topic states, my RPM's go down everytime I apply brakes standing(not moving)....My car is a 5 speed 98 SE with around 106k miles on the clock. Regular maintenance, cleaned TB and IACV a little while ago. Any help is appreceated. Thank you!
03-02-2006, 05:05 PM
#4
Member
Join Date: Nov 2005
Posts: 46
yeah, the same thing happens to me too. but i also have other problems; my rpms raise when i turn on the ac/heater to the auto function, rpms raise when i turn the wheel, and the heat comes out to the floor when the heater is off. so yeah, my whole car's messed up after the accident. so sad..
03-02-2006, 05:06 PM
#5
Originally Posted by 97vq30de
yeah, the same thing happens to me too. but i also have other problems; my rpms raise when i turn on the ac/heater to the auto function, rpms raise when i turn the wheel, and the heat comes out to the floor when the heater is off. so yeah, my whole car's messed up after the accident. so sad..
03-02-2006, 05:08 PM
#6
^^ those are all normal, so i hope you are joking.
the brake booster is connected to the intake, so you are using up vacuum when you apply the brakes, its called vacuum assisted brakes! if you didnt have this you would need some strong legs to stop the car.
the brake booster is connected to the intake, so you are using up vacuum when you apply the brakes, its called vacuum assisted brakes! if you didnt have this you would need some strong legs to stop the car.
03-03-2006, 05:46 AM
#11
100% chingon
Join Date: Oct 2005
Posts: 1,003
Originally Posted by JSutter
^^ those are all normal, so i hope you are joking.
the brake booster is connected to the intake, so you are using up vacuum when you apply the brakes, its called vacuum assisted brakes! if you didnt have this you would need some strong legs to stop the car.
the brake booster is connected to the intake, so you are using up vacuum when you apply the brakes, its called vacuum assisted brakes! if you didnt have this you would need some strong legs to stop the car.
03-03-2006, 05:57 AM
#12
Originally Posted by 97vq30de
yeah, the same thing happens to me too. but i also have other problems; my rpms raise when i turn on the ac/heater to the auto function, rpms raise when i turn the wheel, and the heat comes out to the floor when the heater is off. so yeah, my whole car's messed up after the accident. so sad..
Thats because everything is belt driven off the crank.
03-03-2006, 08:47 AM
#14
RPMs do go up when you turn wheel or put a load on alternator, because ps pump and alternator take their power from the engine... but my rpms do not drop when i hit the brakes (and if rpms do drop it's so low that the tach doesn't register it)...
03-03-2006, 11:30 AM
#15
Originally Posted by 97vq30de
yeah, the same thing happens to me too. but i also have other problems; my rpms raise when i turn on the ac/heater to the auto function, rpms raise when i turn the wheel, and the heat comes out to the floor when the heater is off. so yeah, my whole car's messed up after the accident. so sad..
All of these are normal. If you don't want air coming through your vents at all when you're driving, hit the recirc button.
03-03-2006, 02:44 PM
#18
Originally Posted by WhiteMaxima9600
Umm my rpm's go down when im moving when i press the brakes. Don't worry about it
hitting the brakes slows you down.. thus your rpms go down
fake edit: all the things you guys were saying are normal.. A/C, turning wheel ect.
03-03-2006, 07:48 PM
#22
Originally Posted by 97vq30de
yeah, the same thing happens to me too. but i also have other problems; my rpms raise when i turn on the ac/heater to the auto function, rpms raise when i turn the wheel, and the heat comes out to the floor when the heater is off. so yeah, my whole car's messed up after the accident. so sad..
same things happens to me, Nothing unusual and your car is perfectly fine. I also have the issue of the idle going down when I'm sitting at the light with the brakes on.
03-03-2006, 08:19 PM
#23
Senior Member
Join Date: Jun 2005
Posts: 104
not to hijack this thread, but recently, my cars RPM has been wandering. after going on the freeway, and stopping at a light, the needle drops to zero and the car dies, dummy lights come on.
RPM daily has been around 500, and when i step on the accelerator, the rpm goes up around 400 with a deep purr and starts moving again..
im new with max's so any help is needed
RPM daily has been around 500, and when i step on the accelerator, the rpm goes up around 400 with a deep purr and starts moving again..
im new with max's so any help is needed
03-03-2006, 08:27 PM
#24
Originally Posted by DuMKuH
Its like a little boys nursery schooll here. No offence.
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