Anyone got a pic of the 2 electrical conections by the LH shocker tower on a 348?? One has a blue plug the other black, took them off and I can't for the life of me remember which way round they go.
just had a quick rummage through the hard drive and found this. Is that what you mean Steve? Drew Image Unavailable, Please Login
had another rummage - couldn't find a pic with a blue connector, but here is a black connector between shock tower and cannister. Image Unavailable, Please Login
received an email back from "E" (luckily) he said he'd post a pic by morning go here www.eugeniosferrariservice.com let it load all the pics then scroll to the very bottom pic should be there soon hopefully this is what you were talkin about
Thanks Drew, the connections in question are just in front of the cannister Image Unavailable, Please Login
The Parts Book calls these "Anti-Evaporation Valves". I just looked at my own 348, the black connector is on the top, the blue connector is on the bottom. Do you need a picture? Edit: Just looking at the exploded diagram, I can't see that it would make any difference which was which. They are both plumbed through a single vent hose with a T fitting from the charcoal canister, and directed to either the 1/4 side or the 5/8 side of the intake manifold. Same-o, same-o.
Thanks Jeff, that's exactly what I was after, don't need a pic. Just couldn't remember which way round they went. Thanks again Steve
Jeff Burk totally knows his way around 348 mechanicals (so do a hand full of others here)....alot of knowledge so this isn't meant to start anything but you should look at the pics at the bottom of E's website www.eugeniosferrariservice.com per my request (to sometimes help here)......he took the time to take pics of 3 cars he's currently working on plus add another pic he already had and unanimously, all the cars have the blue connector on top "i think" ..... that they purge discreetly to each manifold based on the ECU (for that side) telling it it's ok to do so..... based on factors like richness (O2 sensor), temp, etc although they may be tee'd on the inlets, they purge discreetly on the outlets ? FWIW
Good post, Joe - and absolutely correct! According to the manual, page C58, "Each solenoid valve is controlled by the corresponding ECU with a duty-cycle square-wave signal dependent on the various operating conditions on the engine." So how do we answer the question? Which wires are supposed to be attached to which solenoids? The original question just said that there is a black connector and a blue connector, which one is on top and which is on the bottom? In the case of my own car, the blue one was on the bottom (I rechecked). In Eugenio's case, the blue ones are on the top. The solenoids are the same (same part number) and either connector will fit, and it doesn't matter which is on the top. One of the solenoids has a hose running to the manifold on the 1/4 side, the other solenoid has a hose running to the 5/8 side. The wiring diagram shows that there are three wires running to solenoid 87b, which is labeled as the 5/8 electrovalve, and two wires running to solenoid 87a, which is labeled as the 1/4 electrovalve. But I checked on my car, and there are only two wires (one orange, one grey/green) running to each solenoid. As far as I can tell, the only way to find a positive answer to this is to pull the connectors from the solenoids, then pull the connectors from the Motronic ECU's, and measure for a circuit from pin 5 of the Motronic to one of the pins on the solenoid connector. Then make sure that the 1/4 Motronic is connected to the solenoid with the vacuum hose running to the 1/4 manifold, and vice versa for the 5/8 side. I'm afraid I'm not willing to invest the time to make that test right now. It's hard to believe that it would make the slightest difference, but it's designed to work in a specific way. I could not find any reference to the blue and black connectors in the shop manual or the parts book, and it could still be wrong if the vacuum hoses were routed to the wrong manifolds.
Jeff according to E off the top of his head " black - long hose - 1-4 side" "blue - short hose - 5-8 side" he said he'd double check and let me know any diff. if it was
Hey, If E says "plug the short one in either side of your nose first - then put it in the upper position of the cannister", I would consider it a valid direction. But I joke----------he doesn't...not when it comes to issues like these. You've heard of Yoda? Get it? Cheers, Hank
