Bruce, This sure sounds like a sensor not behaving well when the engine is cold but the air temps are warmish. But I can't think of a Bosch L-Jetronic sensor that controls the behavior that you have experienced. My cold start problems (cold temps, cold engine) that I had with my long departed '86 Spider were related to the Auxiliary Air Valve (AAV) which I never did get corrected. I did find a nice write up of of the L-Jetronic system based on a GTV-6: http://www.hiperformancestore.com/Ljetronic.htm. Might be that all you need to do is tighten up those pesky grounds !!! ;-}
Bruce '73 GTV > > Date: Mon, 2 Apr 2012 15:33:17 -0400 (EDT) > From: [email protected] > Subject: [alfa] GTV-6 Cold Start problem in warm weather > > OK, I know this is weird, but for several years I've had this problem. So > far I have been able to get under way each time. > > For example, this afternoon, the GTV-6 had not been driven in 24 hours. The > car was sitting in the bright sun, and the outside temperature was in the > mid 70s. The inside of the car is hot, but I don't know the temp under the > hood. I turned on the ignition switch, and the engine started immediately > as it usually does when cold. But then it immediately died as if I had > turned off the switch. This happens within the first second or so - > rrruumm then > it dies unless I am ready to pump the gas pedal. > > If I catch it before it completely dies, it runs but stumbles like it was > running on five or four cylinders. This rough running disappears after > driving a block or less. If I don't catch it when it dies, it grinds and > stumbles until it catches. Then runs roughly as previously mentioned. > > This does not happen when it is cold and has not been sitting in the sun. > It also doesn't matter if the temperature is in the 80s or 90s. This > problem > also occurs if I drive somewhere and leave the car for maybe a couple of > hours. I haven't actually timed it. If I make a short stop, then start it, > there is no problem. But, if I leave it for an extended time, it fires up > then dies as above. > > It acts as if the cold start valve shoots in gasoline, but some other part > of the system doesn't tell the computer to operate the fuel function. > > Any ideas? > > Thanks, > Bruce Sharer > Raleigh, NC > Annoying GTV-6 problem -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
