Hi everyone,



It seems that everytime I'm posting on here it's with crazy issues. We have a customer's FC here at the shop. It arrived in pieces, with a damaged, modified engine harness and three boxes of bolts, gaskets and hoses.



I was looking to get help in identifying some parts as we're not rotary experts yet.



Thanks!



http://www.dentsport.com/gallery/d/2926-2/DSCF1503.JPG



This hose- is there a surge tank on this car? There isn't one in the box.



http://www.dentsport.com/gallery/d/2930-2/DSCF1504.JPG



Injector clips- these have been spliced for the primaries. It looks like the primaries we have in the box are the correct ones but the clips on the pigtails attached to the injectors in the box are grey, not red. Furthermore, the wires attached to these red clips are a larger gauge then the wires on the primaries that came in the cardboard box o' parts.



http://www.dentsport.com/gallery/d/2932-1/DSCF1505.JPG



With the split loom wrap removed we see the hoopty splicing job. I think what I'm looking for here is a picture of an unmolested harness, a shot of the injector area.



http://www.dentsport.com/gallery/d/2934-1/DSCF1506.JPG



Is this the correct waterneck for a 1988 turbo II? It seems like the stock hose is loaded too much when attached. Also, what are the two white connectors at 7:00 to the waterneck?



Thanks so much guys.



Alex

http://www.teamfc3s.org/main/factory_servi...nual/1986_1988/



I think you need a wiring schematic. I don't know how much pics will help.



That first pic looks like the exhaust hose for the ACV.



No, I think that neck is from an S5. S4s were always metal afaik.



I'm kinda amazed that you would take such a mess on. Is business slow?



Cheers

good luck getting that thing sorted, looks like ur starting with quite a mess. Is the motor even good?

1. Breather hose to the factory air box to quite box behinde headlight for AIR PUMP.

2. high imp S4 injector clips 550cc.

3. Wires are part of the BACV, O2, and Rear rotor Injectors.

4. That is a S5 neck 89-91, the connectors are part of the ACV the big block off plate you see, note the ACV has been removed and blocked off.



The electric fans are drawing more amps then that alt can handle and should be addressed.

Is that OMP electric? It looks like someone may have swaped a S5 motor.

You guys are great. Starting at the top,



Business has never been better for us, I know this seems like some kind of charity case job but it's one of the things I like a lot about owning a shop. This is a great way to learn more about this motor for one. Second anything i do will be an improvement so if I'm up front with this customer about time and expectations then everyone leaves happy.



This is one of the things people like about our shop, that they can come in with projects that they aren't able to finish and not be faced with massive ego, or be made fun of and I'm proud of that. This is a risky job but I'm realistic.



One major attraction to this is that the engine is factory new, so as Ice said, this could be a different version than what was originally in the car. It also has questionable history with these poorly executed modifications.



I appreciate the wiring harness link. My next step is to shore up the leaks, and run a pinout on the ecu to the injector wires to make sure that each injector has the correct clip on it.



There are two water pipes on the top of the motor. They're about 1/4 diameter OD. Where do these go to? One is pictured with a blue hose attached in the above picture.



Please appreciate how hard it is to get a car like this without having a very intimate familiarity with it.



Thanks,



Alex

What should I recommend for an uprated alternator? I know of a place that will build to my spec in any case but perhaps there's a factory upgrade to drive these fans? Thanks for the heads up on that.



A

The blue hose is a bypass hose for the TB mod. It went to the TB to warm the thermo wax pallet for the AWS system.



For the ALT I hope your wallet is thick http://www.mechman.com/alt.htm or you can modify a FD ALT.



If each of the injector plugs has 12v on one of their sockets, then visit the ECU and its small yellow plug. With the key to ON, check for 12v at each injector wire. Your checking the socket on the small plug, not the ECU.



The 12v at the solenoid resistor comes from the Main Relay. The Main Relay should be hot from EGI INJ fuse in the engine fuse box and also goes to the coil assembly’s. Black/Yellow wire.



The voltage for the injectors comes from the EGI INJ fuse to the Main to plug X-16 on a 87 series four (called FEM-02 on a 88) then to the fuel injector and then to the ECU pins 3C, 3E, 3F, 3H the ECU flips ground on them in turn momentarily.

Sorry about that I got onto a S4 binge here thinking low imp. That resistor pack will not be in this car. So bypass that.

Its got an s5 turbo manifold on it also, probably a complete s5 engine.

Hi again guys. We have a problem, well.. another one.



The customer sourced a harness and ECU. It was like christmas, ECU, sensors, injectors and harness all nicely packed in one box.



The problem arrived at the point when we realized that the body harness interface on the new N370 numbered ECU would not plug into the car's N333 ECU.



What is the N370 from? We assumed that this kid would have bought the same parts and we're trying to decide on either repairing the old harness or trying to continue with the new one, which seems unlikely since we have no flying lead connector from the new N370 ECU.



If anyone's interested in the above N370 package, as an aside, we paid $400.



Thanks,



Alex

wow what a mess, the n370 is the s5 ECU, you'd need the s5 harness to make it doable and then I don't know what issues you would run into with the motor, can't tell if it's s4 or s5 but from the omp setup maybe s5?



n333 is 88t2 and n332 is 87t2



89 to 91 n370

Ok you have an S4 car high impedance with a S5 motor!



If the emissions harness has 2 ECU plugs it is a S4 harness.



If the emissions harness had 1plug it is an S5 harness.



So you will need both FSM wire diagrams when you figure out what harnesses and ECU you are going to wire into this car.



I have already posted a pin out for you above. Here you can grab the FSM and compare wire colors. http://208.62.166.66:82/guest/shop_manuals/



Note the S5 motor uses a wide range TPS the S4 uses a narrow range TPS. The S5 uses an electric OMP controlled from ECU and the S4 uses a mechanical controlled from lever attached to TB.



The injector impedance is decided only by the resistor pack on the emissions harness pics are shown in my last post.



The S4 will also have a solenoid for the twin scroll just disregard it is bright green.

Thanks again Ice Blue!

np, I figured I would take some guess work of it this for you and fill you in on the best rout.



Use a S5 emissions harness and ECU. Label each wire by its pin number; stick a needle in the back and depin it. Pull the tab back for repining, pin them all back into the S5 clips as labeled and per the diagram ^. Be sure to check each wire origin for comparison there is a couple differences.



I barely know anything about S5 so I won’t be much more help sorry.

but I didnt see an airpump or belt for it and it didt have a double ribbed alty belt...

The air pump had been removed that is that dangling hose by the head light he was asking about.



No FC had a double ribbed ALT. The belt for the air pump is the missing belt on the water pump pulley.