IDLE FLUXUATIONS 1990 HONDA CIVIC 1.5 L

My honda on a cold start idle fine. When it warms up it start fluxuating
drastically @ 1000 to 1500 rpm. I was told it was a throttle body sensor
and that you had to buy the whole throttle body to get the sensor for that
year. Need help. thanks, steve

FITV or IAC needs cleaning.

I have 2 complete 1.5L DPFI setups if you figure out what parts you need.

"Stiff" > wrote in message
lkaboutautos.com...
> My honda on a cold start idle fine. When it warms up it start fluxuating
> drastically @ 1000 to 1500 rpm. I was told it was a throttle body sensor
> and that you had to buy the whole throttle body to get the sensor for that
> year. Need help. thanks, steve
>

Stiff wrote:
> My honda on a cold start idle fine. When it warms up it start fluxuating
> drastically @ 1000 to 1500 rpm. I was told it was a throttle body sensor
> and that you had to buy the whole throttle body to get the sensor for that
> year. Need help. thanks, steve
>
double check the coolant level in the radiator [not the expansion
bottle]. insufficient coolant sends the wrong temp sensor signal to the
ecu & it goes into cold idle mode until the revs rise enough to bathe
the sensor. than it drops & the cycle repeats.