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speed guage goes up and down while steady speed


timestalker45

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ok prob has been there for a while it does it only when car is hot and when u been doing same speed for a while the speedometer goes up and down (usualy happens around50-65)as soon as i remove my foot of gas petal it fixes its self or increese speed

vehical speed sensor has been replaced

the connecting cable too

and it just started doing it again has not done it in a while at least 2 weeks now tonight just started to do it again only like 3 times while i was driving before it was constent

any idease with no check engine light and the trany seems to shift fine im lost

well its been a little jerk if im doing say 65 and i pull ym fot of the gass fast it might jerk only once in a while though

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Nicole. help this guy sign up for a junior high school english class. I can't read what he wrote.

 

 

 

seriously.... what?

 

 

do you hear a whine in the radio consistent with RPMs?

do you have the headlights flicker or dim when you press the brake?

do you ever have the gauges pop or jump when you press the brake?

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ok sorry but i only understand proper english this one just confuses me. You said you had a vss changed, have you had it on a scanner to diagnose which vss was bad>?

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well for some fd up reason no scan tool for the tranny works so we guessed useing comon problems and vss is brand new gm only do to they dont make the 4t60's speed senor they make the 4t60-e or the 3 speed version so i had to go to gm for the vss

now i noticed something the speedometer has not done the up down thing till today but when it did it i had gotten air of a small hill and i was pumping my brakes do to disconecting the abs, (i can now lock up my tires) also when it go down as soon as i hit ground it went right to speed and did not bounce. is it possible do to my struts being blown completely that the tires are getting air and as i push brakes when the tires is off the ground it locks them and that causes the meter to go to zero but as soon as i hit ground or i release the petal while moving it returns it to speed

not sure if i exsplained it right sorry

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do you hear a whine in the radio consistent with RPMs?

 

Hi sorry for hijacking but I do hear that whine in the radio. It's MUCH louder and more noticeable when my A/C is on. I've always wondered why it does this. Is it normal?

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ok i am an idiot it does it only when stopping from being in overdrive u can feel and c it in the rpms as soon as i shifted into over drive (45mph) i started tapping brake and well the speedometer droped completely then went up again, i tried it a few time did it every time but if i ddint let car go into over drive no problem or if i was at speeds grater then 45mph

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can i get some help with my problem (not my english)? I just need some ideas on what would cause my speedmeter to go up and down durring stopping from being in overdrive.

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but when it did it i had gotten air of a small hill and i was pumping my brakes do to disconecting the abs, (i can now lock up my tires) also when it go down as soon as i hit ground it went right to speed and did not bounce

 

Did you just say you jumped your car on a small hill today, got air (from the jump), and in this time you somehow locked up your tires?

 

Pumping brakes does not... disconnect ABS. Pull the ABS fuse if you want to disable ABS... on second though don't, your life may depend on it.

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