Ok im in the process of putting my 88 TII harness in my 87 TII. Well i got the harness ran but i dont kno wat injector plug goes to wat injector..So i need a pinout at the ecu so i can get the wire colors and match them up real quick...

thanx!!!

 

electrical section and fuel and emissions (turbo) of the FSM

BUT there are two different branches of the harness. I think the front one has the coolant temp sensor on it as well, but not 100% on that. The longer part goes to the secondary injector and the shorter goes to the primary.

 

see i wanted to do that but there all aftermarket pigtails all white and the same length lol

 

i looked in the haynes manuel and couldnt find a pinout...i figured hailers would have dont chimed in by now, he knos everything lol

 

http://cochran-racing.com/FSM/s4/04b...TEMS_TURBO.pdf

look on pages 31-33.

 

It doesn't matter which White wire goes to Which of the TWO injector wires on the Harness. Pos. or Neg.
If it did the Pigtail wires would have a black wire and a White wire..I had the Same inquiry,and I got the info from KGPARTS.

 

hmmm see i already had that printed out but the wire colors i see at the ecu isnt the same as the one on the harness injector plugs...the harness is a 88 TII harness and the ecu is a 87 TII ecu...does that matter?

 

the pigtails are both white wires, im just goin back to where they spliced them to the original wires...

 

This car have a solenoid resistor pack?

But the wire from the individual injector, to the ECU is the same whether or not you have a solenoid resistor.

They go to the small ECU plug. The plugs read looking into the wire side of the plug. Starting from far upper right in a up/down fashion. Wire colors are Lg/W, Lg/B, Lg/R and Lg

Lg is light green.

 

no i swapped from low im. injectors to high...so no resistor pack...sry but i cant make out that diagram you gave me...lol

 

so the ecu is n333? and the harness is from an 88? Everything should match up. The 88s don't have a resistor pack.

So is your harness all hacked up? Are you just wireing directly from the ECU to the FIs?

anyway go to the faq and download the manual. Section 4b pages 32-33 have the pinoouts.

 

The jpg of the ECU plug is attached. I pointed to where each injector wire goes.

You look into the wire side of the plug when viewing the pinout.

One wire on the injector plugs will have batt voltage when the key is put to ON. It matters not where that wire is in the INJECTOR plug. But one wire in each injector plug will have batt voltage.

The Other wire in each injector plug goes directly to the ECU's small plug. The ECU will pulse a ground to those wires to make the injector work.

You could remove all four injector plugs.

Then you could remove the small plug that's on the ECU. Then put a meters positive lead on say the LIGHT GREEN wire in that small ECU plug. The meters neg lead to a known ground.

Then put the key to ON.

Now put the front primary injector plug back on the front primary injector. When you do that the meter should read battery voltage. IF if does not, then you put the wrong injector plug on the front primary. Try another injector plug til the meter at the ECU small plug shows battery power. When it does show power, that means you have the correct plug on that injector.

Then you could do the rest of the plugs in the same fashion.

If you get a meter out and check each injector plug with the key ON, and get no battery power on one pin in each injector plug, then you have a problem elsewhere and can't work it out til you find out why you have no batt power to the injector plugs.

IN fact I'd check whether or not you have batt power on the injector plugs first thing. Key to On.

 

Ok well i got everything back on and tried to start the car.....nothing!! i turns over and is getting gas to the rail and is firing but the injectors arent firing im guessing. If you take the intercooler offl and spray carb cleaner down the hole while turning it over it cranks for a sec or untill you quit spraying...i kno my harness is good, and i kno the injectors are good, only thing i havnt checked is the ecu??? this is the same thing it was doing when it had the low impedance injectors and the 87 harness so me changing injectors and harness did nothing to the problem...wat else do you think this could be???

 

well a little update...i got home and started thinking about possible things and come to realize that i didnt put the damn tps back on the uim!!!!! has to be the dumbest thing ive ever done lol but will this cause it not to start???

 

A car will start without the TPS being connected.

Pull a injector plug off and with key ON, see if there's battery voltage on one of the two sockets.

Or instead of pulling the intake off to do that, pull the small plug off the ECU. Then key ON, and check for batt power to the injector wires in the PLUG. Should be there on the light green, light green/black, light green/red, light green/white.

You real sure you have the fuel lines connected right???? Jumper the yellow two socket fuel pump check connector and put the key ON. Then pull the fuel Return line off the engine and see if fuel pours out. It should be the rear line if it's a USA engine. Not so if JSPEC.

The attached jpg shows the pressure hose and the return is next to it. I know you know that, just had a jpg handy. That's for USA engines.

 

ok ill check the injectors in a bit...im not sure about the fuel lines...the rats nest is gone and this is a jspec engine..if im correct the inlet line is goin to the primary and the return line is coming off the secondary rail...also the fpr is on the secondary rail as well....

 

If you're using jspec fuel rails, you have it backwards. On Jspec engines, the FPR is on the primary rail, and the pulsation damper is on the secondary. The secondary rail gets the fuel inlet line, and the primary gets the return line. The FPR is always last in the system.

 

ya now that i think of it the fpr is on the primary rail lol soooo the gas lines are backwards lol

 

swapped the fuel lines and it fired right up lol

thanx everyone...