what cause the tach jumps back and forth + no upshifting on WOT
so my bro has a 93 civic LX auto, i was driving it eariler and floored it for the very first time to see what the all mity 1.5 can do LOL
i notice that whenever i go pass 4K rpm the tach would jumps back and forth a lot. (sweeping througth 0 to 6K) lol , the engine sounds fine, it accelarate and everything, i could have care less but it DOES NOT UPSHIFT if you hold the pedal all the way down, it would eventrully hit revlimit and bounc back unless u let go of the gas a little and THEN it would up shift. so i am guessing the ECU is not seeing the correct rpm to control the upshifting.... could it be the dizzy ? ??? ??? (*** it drives perfectly fine until u floor it and wait for the thing to upshift***) |
Re: what cause the tach jumps back and forth + no upshifting on WOT
the upshifting is the torque converter... i dunno bout the rpm tach ----... i kno my 240 was doing that ---- when i first got it... it was in desparate need of the 5spd conversion/motor swap lol. now its happy
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Re: what cause the tach jumps back and forth + no upshifting on WOT
nar it`s not about the tork conveter. it upshift on regular thottle and locks up fine.
what i meant is it feels like the car is not seeing that i am hitting redline and did not make the tranny upshift AT redline. |
Re: what cause the tach jumps back and forth + no upshifting on WOT
Originally Posted by Donald125
nar it`s not about the tork conveter. it upshift on regular thottle and locks up fine.
what i meant is it feels like the car is not seeing that i am hitting redline and did not make the tranny upshift AT redline. |
Re: what cause the tach jumps back and forth + no upshifting on WOT
Check fluid levels in the tranny, same thing used to happen to my old CRX.
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Re: what cause the tach jumps back and forth + no upshifting on WOT
i would check the fluid (to see it it smells burnt) you could have a dirty transmission filter
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Re: what cause the tach jumps back and forth + no upshifting on WOT
uhhhh if its not seeing its hitting redline, how would the revlimiter work?
sean |
Re: what cause the tach jumps back and forth + no upshifting on WOT
tranny fluid is fine.
i don`t even know how the fuel cut would work, it`s just working but the tranny is not up shifting WHILE the tach needled is going crazy. |
Re: what cause the tach jumps back and forth + no upshifting on WOT
yea my girls da did that and it was simply just lack of tranny fluid! ???who would of thought!
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Re: what cause the tach jumps back and forth + no upshifting on WOT
if i remember your car doesnt have a stock tach right ?????
you probally bought a shitty pep boys one and it just bounces..... my .02 |
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