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Author Topic: Electrical connection identification ?  (Read 1715 times)

CapriProject

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Electrical connection identification ?
« on: July 03, 2010, 02:33:00 PM »

Location:
In the engine compartment, on the firewall, right next to the AC line entering the firewall.
The stock wire harness has 3 connectors (which isn't connected to anything). They are:
1- a yellow connector with 2 wires...
Green w/ white stripe  & a black wire
2- a green connector with a single yellow wire
3- a green connector with 3 wires...
yellow w/ green stripe, green w/ black stripe, black w/ blue stripe.

Can you please tell me what should be connected to these?    THANKS.

PS worked on the timing belt today (they had the wrong marks lined-up).  Corrected the timing but I know I'm not the first to say what a pain-in-ass that job was.
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Gostlrs

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Electrical connection identification ?
« Reply #1 on: July 03, 2010, 05:40:00 PM »

you use them for testing and pulling codes.....
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Rocketman

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Electrical connection identification ?
« Reply #2 on: July 03, 2010, 05:47:00 PM »

+2 they are the diagnostic connectors.
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1.8L Turbo All Wheel Drive Capri... the "GTXR2"


CapriProject

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Electrical connection identification ?
« Reply #3 on: July 03, 2010, 06:20:00 PM »

All 3 different connectors are used for hooking-up some diagnostic equipment... OK,
I'm going to try & start this poor thing tomorrow   (been un-started for about a year...I've been told) so I was just worried those connectors were for parts that would stop it from running.  Wish me some '4th of July' luck.  Hope Y'all have a HAPPY 4th.
Thanks
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Gostlrs

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Electrical connection identification ?
« Reply #4 on: July 04, 2010, 07:39:00 AM »

throw a can of B12 chemtool in it before u start it...

will help clean up the tank
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CapriProject

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Electrical connection identification ?
« Reply #5 on: July 04, 2010, 03:00:00 PM »

Didn't have any luck today.
I'll try your suggestion tomorrow (didn't see your post before I left)
I had the battery tested (A-OK), replaced the battery terminal clamps (made sure good contact), made sure had fuel & pressed the 'fuel shut-off' switch to make sure it wasn't tripped. (the red button is suppost to be and stay completly depressed right?) Checked all plug & coil wires.  
Cranked & cranked & cranked No luck. Every once in a while it sounded like it wanted to fire-up but never did. I even ran jumper cables from my running truck's battery to the Capri battery so I could keep cranking.
Because I'm so new to electronic fuel injection & the ECM computer set-up, I don't know where to "check" to see if that's why it isn't starting.  With the timing belt correct, do these engines also require the old-fashion way to retard/advance by turning the distributer with a timing light? I'll try a couple more times before I tow it to a professional mechanic. Apart from the added expense, I'd really like to be able to work on this car like I do on 'non-FI computer' vehicles (the old fashion stuff).
Besides the B-12 got any other suggestions?
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CapriProject

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Electrical connection identification ?
« Reply #6 on: July 05, 2010, 03:29:00 PM »

Well it looks like I'll have to get it towed over to a professional to get this poor little car started.
Fuel in tank, timing marks lined-up, strong battery with good connections, it's beyond my figuring.
Please confirm that the fuel shut-off switch in the trunk is 'on' when the red button is all the way depressed & feels like it's down solid. (no play)  When it's tripped (off) does the red button pop up (needing to be depressed)?
Is it a good idea to remove the rubber fuel line from the FI unit & see if there's fuel pressure with the key 'on'?  Is there a 'usual' sender that tells the computer not to allow the engine to start? (something I can check in this 'last-ditch' DIY effort)   Thanks again !!
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Rocketman

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Electrical connection identification ?
« Reply #7 on: July 05, 2010, 03:41:00 PM »

FI is not that hard to check -

Verify spark - from the coil. Check the spark at the plugs too. Is the tachometer jumping when the engine is cranking? Is the distributor advanced or retarded too much? Bring it close to center if its too far in one direction. Is the firing order correct?

Verifty fuel - If you spray starting fluid into the filter, will the engine fire then? Do the plugs smell like gas? Pop the line on the fuel rail from the filter and run it to a small bucket. When you crank the vehicle, does it pump fuel? (the capri does NOT prime the pump, the fuel pump switch is in the VAF, and unless the vehicle is cranking it will not run the pump)

Is the intake tract complete? These vehicles will not run if the airflow meter is not connected or not properly connected.


Let us know what you come up with
-Matt
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CapriProject

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Electrical connection identification ?
« Reply #8 on: July 06, 2010, 06:37:00 AM »

Thank You, Thank You, Thank You !!

The problem was so 'basic'. I was over-thinking the possible causes & didn't do 'car-tech 101'...
I had checked #1 for spark when I removed the spark plug to find TDC (had spark). I didn't do the easiest suggestion on your check-list.

Is the firing order correct?   NO, 3 & 4 wires were swaped.  Corrected that one thing & it started right up.  While it was at idle (around 1,000 rpm) I checked the gauges... all fine except the Oil Pressure... NO reading. I killed the motor incase it wasn't just a gauge problem.

What's the check list for finding the Oil Pressure Gauge problem? ... Fuse? Sender? A typical connector problem?

In case I didn't mention it before...Thank You.
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Rocketman

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Electrical connection identification ?
« Reply #9 on: July 06, 2010, 08:41:00 AM »

Sure thing. See? EFI isn't so hard. lol!

As for the oil pressure - many capri oil pressure gauges are defective. If you have no oil pressure you would hear a hell of a racket from under the valvecover as the lifters starve.
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CapriProject

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Electrical connection identification ?
« Reply #10 on: July 06, 2010, 02:25:00 PM »

I double-checked the oil pressure gauge today... I read the gauge wrong yesterday. At idle the gauge shows a little less than the first white mark (30 lbs.).  Yesterday I thought that first white mark was '0'... I didn't look close enough to see the red '0' mark.

When I turned off the engine the gauge went down to '0'... so the oil pump is putting out pressure. (lucky me)

Right next to the Air Flow Meter/Air filter box on the wheel well sheet metal there's the remains of a black cable-tie & a white factory electrical connector attached to the sheet metal. Any clue what was/should-be there?

I swear I won't always be pumping y'all for answers... it's just so new to me & I can't find pictures that show what might be missing on this car.    Again thanks
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CapriProject

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Electrical connection identification ?
« Reply #11 on: July 06, 2010, 03:15:00 PM »

OK,I've got another question(surprise, surprise)

With the Capri (in it's trunk) was a complete set of new brake rotors.  The boxes are marked "Brake Planet"  Here's a picture:  http://farm5.static.flickr.com/4095/4770087222_7733b2c25c_b.jpg
Are these rotors a desired upgrade or just 'nicer-than-stock' replacements ?
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Gostlrs

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Electrical connection identification ?
« Reply #12 on: July 07, 2010, 04:40:00 PM »

slotted and drilled are always a better upgrade..

i put a full set on my wife's Eclipse and it was a big difference in stopping power.

i got a set for my car as well just waiting to put them on when i replace the suspension bushings.
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CapriTypeR

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Electrical connection identification ?
« Reply #13 on: July 07, 2010, 05:52:00 PM »

If you want to upgrade the brakes, sell those slotted discs, and do the big brake upgrade, using the Galant rotors, and escort GT calipers.  The difference is like night and day!

--R
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CapriProject

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Electrical connection identification ?
« Reply #14 on: July 07, 2010, 06:47:00 PM »

Thanks for the suggestions...
Because I'm making this into a three wheeled vehicle, I've figured a plan that uses these rotors.  Because the rear 2 rotors can be fitted with bearings I'm going to put them on each side of my 'modified' rear wheel & run both disk-brake set-ups on the single wheel.
The 'modified wheel' will be made by welding two stock wheels together to make a wide two-faced wheel.  This 'double' wheel in the middle of the two rotors (& calipers) with the bearing to ride on an axle (like a motorcycle's swing-arm set-up). After I posted the question about these new rotors, I went to my shop & this plan came together.  Yes, I know how wierd this all sounds & no I'm not (too) crazy.  (yet)
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