my car revs up and down alll day..
#1
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my car revs up and down alll day..
well its a b18b turbo in an eg.. it revs up and downallll day.. replaced teh iacv still reving up and down.. what else can it be? not a vacuum leak. thanks.
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Re: my car revs up and down alll day.. (egturbo1)
i had this problem in my car for over a year it can be anything from
low coolant
map sensor
blown head gasket
iacv
fast idle valve
try unplugging the tps sensor and adjusting the idler screw
or the screw under the throttle body that will also adjust the idle
low coolant
map sensor
blown head gasket
iacv
fast idle valve
try unplugging the tps sensor and adjusting the idler screw
or the screw under the throttle body that will also adjust the idle
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Re: my car revs up and down alll day.. (88_DX)
Take off the upper IC pipe and cover up one of the two hole inside the throttle body and see if the surging stops. If it does then it is the fast Idle valve.
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Re: my car revs up and down alll day.. (Synapse)
nope no check engine light
whats weird is that i had this problem before.. and then it went away completely
then after i put in seafoam it came back and never went away..
changed teh iacv yesterday still happening
umm messed w/ the thing under teh t/b oopen the two screws put it back ntohing..
was low on coolant. but taking out the intake pipe.. i'd have to do soomuch work what else can it be?
whats weird is that i had this problem before.. and then it went away completely
then after i put in seafoam it came back and never went away..
changed teh iacv yesterday still happening
umm messed w/ the thing under teh t/b oopen the two screws put it back ntohing..
was low on coolant. but taking out the intake pipe.. i'd have to do soomuch work what else can it be?
#9
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Re: my car revs up and down alll day.. (egturbo1)
did you unplug the tps plug and adjust the idle?
also when you are changing sensors make sure to reset the ecu
whats sea foam?
also when you are changing sensors make sure to reset the ecu
whats sea foam?
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Re: my car revs up and down alll day.. (exotik4doorcivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by exotik4doorcivic »</TD></TR><TR><TD CLASS="quote">
whats sea foam?</TD></TR></TABLE>
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whats sea foam?</TD></TR></TABLE>
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#13
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Re: my car revs up and down alll day.. (slow poke)
look under your intake manifold there are a bunch of plastic nipples for vacum that always break off
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i bet it's a vacuum leak....if not use a voltmeter to check ur TPS sensor...i don't think it would be ur map did you change any ECU stuff lately.....what EMS u runnin???
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Re: my car revs up and down alll day.. (egturbo1)
After using seafoam you should reset your computer cuz it gets tricked into thinking its running rich and takes a while to relearn, also i have heard of seafoam ruining o2 sensors and have had a bad o2 make my n\a gsr motor rev like that till I changed it. FYI: to reset computer remove 7.5 backup fuse in engine compartment for 10 sec or neg battery terminal
#17
Re: my car revs up and down alll day.. (egturbo1)
Take off the pipe going into your throttle body after its <U>warmed up</U>, put your finger over the hole inside on the bottom of the tb. If it's pulling suction then your fast idle thermo valve is bad.
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Re: (slodc2)
mine also had this problem recently, i knew what it was never really fixed it. well till sunday. it was the FIT, but there are soo many different things that would make it do it. if no vac leaks. can only be the TB gasket or the FIT
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