intake manifold bouncing idle problem

king_etho

New Member
ive brought a skunk2 pro intake manifold for my ek cxi civic..its together and when it starts up it idles perfectly after warming up, the idle starts to bounce to around 2000 and back down to normal idle revs, and it just keeps doing that. ive replaced the map sensor and the tps..ive blocked up the iac valve because my car does not have one. what could be the problem? thanks
there also no vacuum leaks
 

Javier.San1993

New Member
Is it brand new? Clean your throttle body, that's the only thing I can see that might help since you don't have and IACV to clean out....

Sent from my SGH-I897 using Tapatalk
 


king_etho

New Member
Javier.San1993 said:
Is it brand new? Clean your throttle body, that's the only thing I can see that might help since you don't have and IACV to clean out....

Sent from my SGH-I897 using Tapatalk
Click to expand...
yeah it is. ive taken the throttle body off pulled it apart and cleaned it.. didnt help
thanks mate
 

RonJ

Banned
Have you bled the cooling system?

Have you tried adjusting the idle speed as described in the service manual?

Does the 2-wire ECT sensor under the distributor have the proper resistance?

Did you calibrate the TPS?
 


king_etho

New Member
RonJ said:
Have you bled the cooling system?

Have you tried adjusting the idle speed as described in the service manual?

Does the 2-wire ECT sensor under the distributor have the proper resistance?

Did you calibrate the TPS?
Click to expand...
ive bleed the cooling system but ill do it again.

how can i calibrate the TPS? and do i need a multimeter to check the resistance.. if so what should it read?
 

RonJ

Banned
The TPS is calibrated by measuring voltage using a multimeter. Adjust the TPS output voltage to read 0.5V when the throttle is closed. Then check the voltage at WOT. It should read approximately 4.5V.
=======================================================
Bleeding the cooling system may take 20-30 minutes.

1) Park the car on an inclined driveway with the front end higher than the rear.

2) Push/turn the dash heater lever/knob to MAX heat. Fan need not be on.

3) Follow the directions in the diagram below


 

king_etho

New Member
RonJ said:
The TPS is calibrated by measuring voltage using a multimeter. Adjust the TPS output voltage to read 0.5V when the throttle is closed. Then check the voltage at WOT. It should read approximately 4.5V.
=======================================================
Bleeding the cooling system may take 20-30 minutes.

1) Park the car on an inclined driveway with the front end higher than the rear.

2) Push/turn the dash heater lever/knob to MAX heat. Fan need not be on.

3) Follow the directions in the diagram below


Click to expand...
bled the cooling system, nothing happened, if anything it made it idle higher.. i dont have a multimeter so i cant check the tps
 

Zedicous

New Member
king_etho said:
ive brought a skunk2 pro intake manifold for my ek cxi civic..its together and when it starts up it idles perfectly after warming up, the idle starts to bounce to around 2000 and back down to normal idle revs, and it just keeps doing that. ive replaced the map sensor and the tps..ive blocked up the iac valve because my car does not have one. what could be the problem? thanks
there also no vacuum leaks
Click to expand...
You need an IACV.
 

Javier.San1993

New Member
Yeah.... I was so confused by why you didn't have one.... maybe the reason is because you're missing it.... lol

Sent from my SGH-I897 using Tapatalk
 
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