Ok before Everyone jumps in and says the obvious, I already tried them...

I already
- Cleaned Throttle body
- Replaced IACV
- Replaced Fit Valve
- Changed map sensor

What else would cause the annoying honda Idle?
It idles at 1000 then jumps to 1800...
Back and forth non stop, not just when its cold.

95 accord
4cyl EX vtech
manual

Any ideas?
I was thinking maybe the TPS or the ECU??

 

Have you searched for vacuum leaks?

 

yea, and replaced a couple hoses while I was at it.
changed the map sensor also...

I'm thinking TPS??? if it's something else I have absolutely no idea.
Oh and there is no check engine light either...

 

Do Accords have a steering sensor like the Ody's? A broken wire caused a similar idle fluctuation on my Ody.

 

Did you open the bleed bolt on the thermostat housing to get all of the air out of the system?

 

check your PCV valve and make sure its not broken or clogged.

 

Maybe your alternator/battery are going. Go to a local kragen and see if they are providing enough juice. OR you can idle your car and then turn ALL accessories off, it should idle a bit better, but if it idles ALOT better, then you know whats up! My idle would go down if I use my power windows lol.

 

My bad, forgot about this forum...
I got sick of trying to figure it out...
did a tune up, bled the coolant system 3 times, and took intake off & covered it with my hand, it stalled right away, no vacuum leak there...
not the tps either!

Just dropped it at my friends shop, hopefully he can test out the ecu or find something.
Thanks for the reply's

 

Subscribing.
I noticed this same issue on the used accord I just purchased. But this was only after a 1/2 hour ride when she sat idle for a few minutes. It seemed to clear up. The short trips it usually makes seems fine.


also temp guage takes forever to go up to normal, but heat works after a few minutes of startup even when guage still on C. After the half hour trip, the temp guage went to normal, but went right back down to C again after I started to drive.

 

Mine did this only while cold.

From what I've learnded, Typically, the coolant temp sensor (CTS) causes this.

QUOTED FROM MY UTI BOOK::
"This sensor is a thermistor and is used to measure differences in the coolant temperature. The basic injector duration is partially based on the signals sent from this sensor through the ECU. The resistance of the thermistor decreases with a rise in coolant temperature.


[*]
Unplug the connector from the sensor, then remove the sensor from the thermostat housing. [*]
To test the sensor, suspend it in cold water and heat the water slowly. Measure resistance between the terminals. Resistance values are as follows:
[*]
0.98-1.34k ohms at 95°F (40°C) [*]
0.22-0.35k ohms at 176°F (80°C) [/ul][/ol]