Hey i have a 88 crx si with a 96 ls motor swap the car is just now running but everytime i start it i have to rev it up myself to keep it from shuting iff until it warms up then it iddles fine, i removed and cleaned the iacv to have the same results, i took it on a test drive and the car is realy jumpy at low rpms almost like im pressing and letting off the gas repeatily then ince in highr rpms its fine, also i noticed the main relay spark once while goin down the rd, if anyone can help that would b great im just trying to have a clean good running dd

 

mine was doing that because of my o2 sensor. got a fresh basemap from phearable.net and i can only assume it had an o2 delete because the problem is gone

 

well idk i bought a new 1 wire 02 could the iacv just be bad?

 

You never said what ECU and OBD you had...

 

Sparks from the main relay... dern!

 

The motor and ecu both came out of a 96 integra ls and its an obd1 swap

 

i swear i didnt read the sparks part. sounds electrical now.

 

96 motor/ecu does not = OBD1

 

also true.

 

Pull the intake tube off and look inside the throttle on the left wall theres a Hole (this runs to the IACV.

Start the car and put your finger over the hole. if theres no sucksion then its a stuck IACV.


If there is sucksion then it still might be a bad IACV ..


any codes?

 

LOL....suction?

 

Ok ill try that, what would be making the car so jumpy at low rpms

 

yea i was blown!!! lol

 

same thing IACV.