vibration when downshifting
09-13-2009, 01:22 AM
#1
3rd Gear Member
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Join Date: Jan 2007
Location: pa
Posts: 613
vibration when downshifting
well ive been trying to get my car straightened out since it decided to start running like crap. missing ect. i replaced the fuel filter,injectors
my cats are blown out and my cel is on for the rear 02 sensors(im assuming thats cause of the cats)
i just replaced the coil packs and i cant tell if it helped,im hoping when i put my new cats on it will be okay. i think my coils were bad and thats why my cats went bad.
i have a vibration when down shifting to first i can feel it rolling to a stop at the shifter,it seems to stop once the rpms drop down to idle. it also happens when downshifting into second but its not as bad.
what does the vibration lead to? ive had it since the car started running ****ty but didnt think much of it. hopefully the vibration has something to do with why my cars running like crap.
my cats are blown out and my cel is on for the rear 02 sensors(im assuming thats cause of the cats)
i just replaced the coil packs and i cant tell if it helped,im hoping when i put my new cats on it will be okay. i think my coils were bad and thats why my cats went bad.
i have a vibration when down shifting to first i can feel it rolling to a stop at the shifter,it seems to stop once the rpms drop down to idle. it also happens when downshifting into second but its not as bad.
what does the vibration lead to? ive had it since the car started running ****ty but didnt think much of it. hopefully the vibration has something to do with why my cars running like crap.
09-13-2009, 10:42 AM
#3
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Join Date: Jul 2006
Location: SoCal
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you should have gone with a set of OEM spark plugs first, I thought I had a bad coil, but it just needed plugs.
Thats a pretty vague description, if its in your shifter, you're just feeling your trans because you are connected directly to it. Your clutch could be going too. And why would you down shift into first?
Another possibility is a motor mount is cracked, check those. Make sure your U-joints are good on your drive shaft.
Thats a pretty vague description, if its in your shifter, you're just feeling your trans because you are connected directly to it. Your clutch could be going too. And why would you down shift into first?
Another possibility is a motor mount is cracked, check those. Make sure your U-joints are good on your drive shaft.
09-13-2009, 02:56 PM
#4
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Join Date: Mar 2009
Location: NC
Posts: 1,909
where do you feel the vibration exactly? The entire car or just in the shifter? and is it consistent with the car actually slowing down with the gears or is it just a shake?
And I second the "why are you down shifting into first" comment.
And I second the "why are you down shifting into first" comment.
09-13-2009, 07:10 PM
#6
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Join Date: Jan 2007
Location: pa
Posts: 613
i mean downshifting into first and holding the clutch down when coming close to a stop sign. the vibration goes away when the car goes back to idle speed.
i can feel the vibration in the shifter and i have cd cases in the driver side door which vibrate when this happens.
its felt most in the shifter.
by the way i recharged my a/c and put the stuff with stopleak in it and after that my car didnt seem to rev up from idle like it used to when the a/c vent or heat was on.
my CEL went out too.
it seems to be running better but the power still isnt there. ill see what happens when i get the new cats on there.
i can feel the vibration in the shifter and i have cd cases in the driver side door which vibrate when this happens.
its felt most in the shifter.
by the way i recharged my a/c and put the stuff with stopleak in it and after that my car didnt seem to rev up from idle like it used to when the a/c vent or heat was on.
my CEL went out too.
it seems to be running better but the power still isnt there. ill see what happens when i get the new cats on there.
Last edited by mrxr250rider; 09-13-2009 at 07:13 PM.
09-13-2009, 07:12 PM
#7
3rd Gear Member
Thread Starter
Join Date: Jan 2007
Location: pa
Posts: 613
you should have gone with a set of OEM spark plugs first, I thought I had a bad coil, but it just needed plugs.
Thats a pretty vague description, if its in your shifter, you're just feeling your trans because you are connected directly to it. Your clutch could be going too. And why would you down shift into first?
Another possibility is a motor mount is cracked, check those. Make sure your U-joints are good on your drive shaft.
Thats a pretty vague description, if its in your shifter, you're just feeling your trans because you are connected directly to it. Your clutch could be going too. And why would you down shift into first?
Another possibility is a motor mount is cracked, check those. Make sure your U-joints are good on your drive shaft.
my plugs,wires and coils were all replaced after the problem started.
09-13-2009, 07:32 PM
#8
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Join Date: Nov 2007
Location:
Posts: 888
o i see what you men, and yes all cars do that, the synchros are just making noise n what not, adn when stopped the synchros arent speeding up to keep up with your revs, but just put the car in first when you come to a dead stop, done anticipate it, cause if your still rolling you cna just take off in 2nd
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