1970mcss Posted August 7, 2019 Share Posted August 7, 2019 All, at the wire wall I have a black wire with a purple stripe with a female connector not plugged into anything. Does anyone have any idea what that would plug into? I looked on the wiring diagram and it looks like tcs solenoid but there is a wire from the relay to the solenoid. This connector looks like it goes to the fuse block. I'm confused. Any help would be great, thanks Paul Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 7, 2019 Author Share Posted August 7, 2019 I think I found my answer, it looks like the connector I have is for the idle stop solenoid. My question now is did the big block cars come with the solenoid or did they just wire all cars with a standard harness. Or did someone take the solenoid off. Quote Link to comment Share on other sites More sharing options...
LostnFound Posted August 18, 2019 Share Posted August 18, 2019 Hi Paul, the big blocks definitely came with idle stop solenoids. I can’t remember the part number right now but they are available. I know they are listed on ebay sometimes. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 19, 2019 Author Share Posted August 19, 2019 I will take a look. But then is there another wire that plugs to the connector to the solenoid? Thanks Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 19, 2019 Author Share Posted August 19, 2019 Larry, you are correct, I found a replacement harness and solenoid on line. Now I need to see if anyone has a picture of how the solenoid mounts to a big block carb. My parts book only list the clamp for a small block and I'm not sure if they are the same. Any help would be great. Thanks Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted August 19, 2019 Share Posted August 19, 2019 On my 71 402 the solinoid mounts to a bracket off of the carbs left front. I will be by the car tomorrow. I will take a pic. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 19, 2019 Author Share Posted August 19, 2019 thanks, I see a diagram for the small block that uses a clamp but not sure on the big block. I have to look at the car tonight also. Quote Link to comment Share on other sites More sharing options...
willie Posted August 20, 2019 Share Posted August 20, 2019 Hey Paul, this is the only pic i have. I can get more but not by the car now. This a 72 with a new harness with 1 wire. I also have another set of wires for the TCS that mounts behind the carb. I don't have pics of that either right now but i will get them later for you. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 20, 2019 Author Share Posted August 20, 2019 Thanks Willie, do you have a picture of the solenoid mounted to the carb? I looked at mine last night and can't figure out how I would mount it. Leo is looking to see if he has the whole setup. Quote Link to comment Share on other sites More sharing options...
willie Posted August 20, 2019 Share Posted August 20, 2019 No Paul, not on the BB. I do have one on the SB but i am not sure its mounted the same, i will ck later for you. I actually don't have one, i have to order it and got so involved with all the gremlins from the electrical on my car that i forgot to order it. I will try and get you all the pics you need later. I know in the manuals there is a pic of this whole setup. Leo is a great guy to deal with, always has the parts and the time for a question or two. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 20, 2019 Author Share Posted August 20, 2019 I found the diagram for the small block but didn't see the big block. I'll look again, thanks Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 20, 2019 Author Share Posted August 20, 2019 I found another diagram UPC M40 Sheet A9 in the manual, says RP0 L78 & L89 but the sheet has cancelled on it. I would still like to see a picture of a car will the original solenoid mounted. Or maybe Leo has a complete setup. Quote Link to comment Share on other sites More sharing options...
willie Posted August 20, 2019 Share Posted August 20, 2019 Paul this is my 72 BB being built, not done yet. With the original bracket If you can see it, there is a connector in the back between the carb and the coil. That is the TCS wires and the unit goes behind the carb. (I dont have this either). Here is a pic of my parts car. It is a 350 car so the mounting bracket is different, for the idle solenoid. Also the TCS is placed in a different spot (left side next to carb). Also check in your manual for UPC 12H sheet 21.5 Thats the pic i went by. If you cant find it let me know and i will get it to you. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 20, 2019 Author Share Posted August 20, 2019 Willie, the pic of the 4 bbl now makes sense. I don't see that page number in my 70 assembly manual but may not need it. The page I have showed the bracket mounting to a head bolt stud or something. If you have the sheet that would be good to take a look at. You've been a great help. PS your engine is looking good. Love all the detail.. Quote Link to comment Share on other sites More sharing options...
willie Posted August 20, 2019 Share Posted August 20, 2019 ok Paul give me a min. I will dig it out, again its going to be some what different because mine is a 72 out of the 72 manual. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 20, 2019 Author Share Posted August 20, 2019 No rush, I will wait for Leo, hoping he has the bracket included. Thanks Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted August 20, 2019 Share Posted August 20, 2019 Here is a pic of my 71 402 as promised Quote Link to comment Share on other sites More sharing options...
willie Posted August 20, 2019 Share Posted August 20, 2019 Here you go Paul, Hope this helps. Quote Link to comment Share on other sites More sharing options...
willie Posted August 20, 2019 Share Posted August 20, 2019 See, as Toms pic shows its also different than mine. So maybe they had 3 different brackets. Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted August 20, 2019 Share Posted August 20, 2019 The one I have pictured is off the numbers matching carburetor from my car. It was built 8/70 in Baltimore. May be a 70 style? Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 20, 2019 Author Share Posted August 20, 2019 Thanks guys, the 72 may be different. The diagram looks different than the one I have but looks like the 402 bracket but the connector and wires on the solenoid looks different. My connector at the firewall is a single black wire with a purple stripe. I guess my hope is that Leo has the correct set up from a 70 BB. I'll let you all know, thanks again. Quote Link to comment Share on other sites More sharing options...
LostnFound Posted August 21, 2019 Share Posted August 21, 2019 My online research is showing that the idle stop solenoid for the 1970 454 is different than the one for the 1971. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 22, 2019 Author Share Posted August 22, 2019 So I'm still in search of a picture of the original 1970 454 picture. I haven't heard from Leo. I'm not in a big hurry because the car runs ok but I would still like to put it back to stock. Thanks Larry Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted August 22, 2019 Share Posted August 22, 2019 Have you tried some of the Chevelle websites? Those guys have been restoring Chevelle's a long time. The Chevelle and Monte Carlo were built on the same assembly lines, side by side. The Chevelle LS5 is the same one in the Monte Carlo. Hope this helps. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted August 22, 2019 Author Share Posted August 22, 2019 I'll take a look, thanks Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.