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Help me idle !!!

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    #1

    Help me idle !!!


    What is that for? The AC has been deleted and after checking the rest of the hoses and changing afm icv the temperature sensors o2sensors im out of ideas! The car starts at 1500rpms then immediately drops to 450-500 then when the engine warms up it stays 750-800rpms and runs flawlessly the rest of the day but sometimes hits 900rpms all of a sudden then drops back up at 7-8k rpm .. It doesn't fluctuate up and down like before ! What am i missing why does this car start shitty but runs good after warm up !
    PS- ive seen u all a bunch of smart asses so all comments are welcome as long as they're problem related :)) many thanks!!!
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    #2
    Still a shitty start ! What else
    Should I change to have a normal
    Start? Please help me out it drives me crazy ? Any ideas ?!

    Comment

      #3
      That loose connector is for the purge valve of the evap system.

      The should be a house from one of the two nipples pm the black canister bolted to the strut tower that you can just barely see under your hand in the photos. The hose should run from the canister to a small check valve that the connector plugs into, and then to a nipple on the underside of the intake manifold (iirc).

      I would check the function of the throttle position switch, check the spark plug/cap/rotor condition, and check for vacuum leaks.

      The suspense symptoms you describe sounds like a minor vacuum leak.

      Comment

        #4
        Andy thanks for your reply, spark plugs are new cap rotor all are new ! Can the fact that i
        Have no purge valve mess with the startup idle?! After the engine is warm the car idles perfectly fine !

        Comment

          #5
          Originally posted by Zalmoxis View Post
          Andy thanks for your reply, spark plugs are new cap rotor all are new ! Can the fact that i
          Have no purge valve mess with the startup idle?! After the engine is warm the car idles perfectly fine !
          Yes, missing the valve can affect idle.
          If the fitting on the manifold has no hose attached, it is causing a vacuum leak.
          If it is plugged at the manifold but open from the evap canister, then it's not causing a vacuum leak, but leaking hydrocarbons out into the atmosphere and slowly giving yourself brain damage.
          If you have the mechanical check valve from the early e30's then you are also fine, but you will just have a loose electrical connector.
          If there is just a straight hose from the manifold to the evap cannister, you are again probably ok, but you really should have that valve in place.

          I would make sure the vacuum fitting on the manifold isn't open to atmosphere.

          Comment

            #6
            Too late for the brain damaged ! Ima
            Try everything even put the ac and ac lines back ! I want to bring it back to OEM till ill have money for SOME serious power upgrades !! It doesnt bother much to idle funny for 5 min .. But i feel like somedays i have all the horses with me pulling and some days i have mules :( thats what pisses me off i guess :)) my vacay to Sturgis is around the corner my german has to wait a bit :) thank you very much for your time to write me back

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