no power

Benvprov · 05-24-2009, 05:00 PM

Well i finally got my engine back in the car but i havent wired it all yet. I was just checking the power to figure out the wirring and in conclusion i found out that only 2 fuses get power and none of the other ones do. So im trying to figure out what could cause only 2 to get power. What are the main things that could cause this problem. Even with keys in the ignition i have no a single thing that gets power. Anyone have any ideas

Benvprov · 05-24-2009, 05:20 PM

forgot to point out that this is on a 1976.

ossiblue · 05-24-2009, 05:21 PM

Benvprov,

You really need to post some specific information about your car, preferably in the signature line, so people can help you more readily. I tracked down some of your old posts and found that your car is a mix of several different models and years which makes help even more difficult. In your case, you have a 76 chassis, right? That will help others who are familiar with the wiring for that year (sorry, I'm not familiar). Has the wiring been modified, as far as you know? Have you checked all the "plugs" in the wiring loom? Look under the dash on the drivers side and you will see three large, round plugs in the bulkhead. Be sure they are firmly affixed. Check any othe similar plugs as well.

I'm not trying to sound harsh or criticize, but for the help you will need with this car, always clarify the model and year of your chassis, trans, and engine. As I said, make it a permanent part of your signature and all will know immediately.

Sorry I couldn't help more but I don't have a diagram for a 76 car. Someone else is sure to respond, however.

Edit: I see you posted the year before I posted. Good work!

Benvprov · 05-24-2009, 05:35 PM

thanks ill had that info to my signature. Im here for help so , ill do what it takes to make it easier for everyone.
As far as i know the only modification thats been done is its wired to run on only 1 battery thats all i noticed.
I wasnt aware that there were more fuses under the dash maybe my problem lies there. I was only aware of the ones under the hood and in the trunk where the engine is. Im really just guessing on most of this, i have 0 experience or knowledge when it comes to 911`s but im learning bit by bit.

ossiblue · 05-25-2009, 08:26 AM

You have a great attitude and enthusiasm and all here are to help. Just so were clear, there are no fuses under the dash--you are looking for large round plugs that connect the wiring looms as they pass through the sheet metal. There are others in the engine compartment between the engine and the firewall. Given your situation, try to get some books, even the Haynes manual will be helpful as the Bently doesn't cover the 76, to get down some basic familiarity with the car. Also, use the electrical diagrams posted on this site (go to the home page for Porsche and look at the left column for area to click.) Your particualr year car may not be listed, but you will get a general idea of how these cars are wired.

Finally, post pictures of the area you are investigationg--in this case, the fuse blocks (all of them). Someone may be able of see a problem that the untrained eye misses.

Keep us up to date, we're here to help.

Pazuzu · 05-26-2009, 09:22 AM

Have you figured out yet what all of the random pieces are that you bought?

So far, it seems that you have an 84 (no, wait, a 76...) with a G50 tranny (no, wait, it's possibly a 901, but no one is sure...) with a 3.2L (no, that's a 2.2L, at best...) that was heavily modified to race in Japan last year (no, wait...it's in pieces on the floor, and might never have run...).

I honestly would guess that the reason you have no power is because whatever wiring harness is in the car is either wrong, broken, randomly pieced together, incomplete, or a home for mice.

Until you can conclusively tell what you have, what is intact, and what is missing, I wouldn't bother with putting the engine in the car and trying to start it...only pain and misery will come of that.

Start documenting part numbers, taking pictures, and giving us some actual information.

Benvprov · 05-26-2009, 12:37 PM

well the car is a 1976 with a 1971 engine and tranny. thats already been figured out. If you followed my posts you would of read that i was frauded and that all that was said about the car was a lie.

anyways past that i took a real quick video of the car if that helps any. here is the link to it.

http://www.youtube.com/watch?v=eGxkJQn1NyE

Winter · 05-26-2009, 01:02 PM

I, too, have a funky combination of a '75 car with an earlier 2.2 installed. This advice will, perhaps, be to expensive to take, but the wiring on my car was such a complete mess I was scared to even touch the car (my first 911). I ended up paying a fair amount to an independent Porsche shop to clean it up. It was tough to swallow, as I consider myself pretty competent. But I'm glad I did. Now when I go to work on the car, it's easy to tell what is what, and I'm starting from a clean slate. You may want to go this route. One caveat, the engine was in the car, and it did run. . .just a nightmare of wires and plugs dangling, etc, etc.

Good luck, post photos here as those are super helpful for the experts on the forum when it comes to helping you help yourself.

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Tom '75 Targa ("stinky")

Winter · 05-26-2009, 01:10 PM

OK, just watched your video. I'll post here pics of my engine bay, with the wiring for your reference. Maybe they can help.

For the females under your dash check the back of your hazard switch. The turn indicator switch has some wires that connect to the hazard.

If my 75 can run with a 2.2, so can your 76. Don't give up!

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Tom '75 Targa ("stinky")

Winter · 05-26-2009, 01:25 PM

I can take more of specific items, angles when it quits raining tomorrow, and I can get the car out of the dark garage into the bright sun. Hopefully this can get you started. Also, AFAIK, your car will have only one battery.

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Tom '75 Targa ("stinky")

Pazuzu · 05-26-2009, 02:08 PM

Have you cranked the engine over by hand yet?
Have you done any sort of compression testing?
Have you pulled the valve covers off and looked inside, or pulled the fan and looked at the cooling fins?
What have you done? You got a potentially basket case engine sitting on a pallet, described with nothing but lies. I still think that trying to start that engine will result in something bad happening. There's easily a dozen things you could do right now (taking pictures along the way) that would tell you and us A LOT more about what you're dealing with.

Then, and only then can you try to start it. Getting a 2.2L T engine spinning should require almost no wiring, figure out what's needed to feed the coil and the starter, get some fuel lines run, and spin it that way, don't potentially bring a bad wiring harness into the mix just yet.

Benvprov · 05-26-2009, 03:08 PM

thanks for the pictures, that should help me get stated in figuring a few things out. Im glad to hear that someone else is running a 2.2l in the same year range, it gives me a little hope. Those other pictures that you take will without a doubt come in handy and will be greatly appreciated. I would consider taking it to a porsche dealership or specialist but the closest one to me is 6 hours away so i dont think thats going to happen.

Yes i did turn the engine by hand and it is not seized it turned nicely. I also did take a look under the valve cover and its very clean, it looked like it was running yesterday. I did have a mechanic friend of mine look at it to comfirm it also. I did not run a compression test on it and wont till much later on, because i cant just tow it around. I also dis not look at the fan like you were saying. What should I be looking for?
Before i can hook up the starter and ignition i need to figure out the cause of the no power situation. I will probably have to mess around with the wiring and figure out whats going where. Like in my video the 2 main power cords from the battery are bipassing the fuse box and i have no idea where they go. So i need to figure that out. My time to work on the car is also limited due to the fact that i have a 2 year old son.

Winter · 05-26-2009, 03:45 PM

I think the post about the fan was to take a good hard look at it to ensure that no blades are cracked/broken. You need the fan to be fully intact and spinning freely to draw air into the engine and to ensure proper cooling.

I agree with the post about needing hardly any wiring for the 2.2 engine. My car was a junk show, now things are greatly simplified. Post here for additional pics of my car when you need them. I'm not saying that my wiring is perfect, but the goal here isn't perfection, its function.

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Tom '75 Targa ("stinky")

Benvprov · 05-26-2009, 04:24 PM

thanks winter, i will probably need all the pictures i can get for this weekend. Im going to try and figure it all out on saturday and sunday. Im using my parents garage so I would like to get it out of there as soon as i can so that they can use it again.

also does anyone have a pictutre of how the clutch cable goes onto the fork on a 1970-1971 transmission. I have a plastic piece that i know is part of the setup im just not sure how it goes on there. thanks

Pazuzu · 05-27-2009, 09:03 AM

Quote:

Originally Posted by Benvprov

Yes i did turn the engine by hand and it is not seized it turned nicely. I also did take a look under the valve cover and its very clean, it looked like it was running yesterday. I did have a mechanic friend of mine look at it to comfirm it also. I did not run a compression test on it and wont till much later on, because i cant just tow it around. I also dis not look at the fan like you were saying. What should I be looking for?

OK, sounds like the engine you got is salvageable at least, and maybe actually working.

I mentioned pulling the fan to check two things...the alternator (bad/burned wires, internal/external regulator, etc) and that there are no nests inside (if it sat on that pallet for any length of time, there might be all sorts of crap in there). You don't want to get this engine running only to have a fire or overheating issues.