Once again my dsm has failed me

[soulweaver]

I was trying to figure out why my dsm was over heating and found out that it is probably air in my coolant lines or it has a blown head gasket. Then one night I parked it out side of my house and went inside and went to bed. The next morning I come out to start it to go to work and the damn car wouldn't start. So I check the spark, compression, and fuel (I checked to see if the fuel rail was getting fuel) and they all worked. But I did notice that my spark plugs are getting soaked with fuel. So I poured some rubbing alcohol down my spark plug holes and then let that sit over nite and put the plugs back in and tried starting it and nothing happened. Does any one have any idea what my problem can be?

I also need to know what color wire goes were on the harness for the Engine coolant temperature switch (air conditioner). It goes in the thermostat and it's the top sensor.

 

[camaroz89]

Probably be good to do to make sure the engine is in sound enough condition to run.

says he already did im gonna place my money on wires to or the injectors atleast thats bout the only thing the factory fault tree says is left according to what your problem is. that link i post has full step by steps to check them under the fuel trouble shooting link.


p.s. if you shoot the wires good and have spark and do not read a 24 code its a fuse.

 

[soulweaver]

Injectors are fine there is gas all over the plugs. Car has compression. And the top half of the motor is rebuilt and bottom half is in great condition just a little dirty on the outside.

 

[camaroz89]

Symptom
Engine will not start
or start too hard
(Cranks OK)

Trouble in the MPI system
Check for output of self-diagnosis
code.Read the code with a voltmeter.

Malfunction of the fuel pump drive control system
Check the fuel pump drive control
system and the fuel pump.

Malfunction of the ignition timing control system

Check the ignition timing.

Malfunction of the power transistor

Check the power transistor as a single
unit.

Power is not supplied to the engine control unit.

Check the power supply circuit.

Malfunction of the control relay

Replace.

Malfunction of the injector

Check the injector drive circuit.
Check the injector as a single unit.

The fuel pressure is not proper.

Check the fuel pressure.

Vacuum hose disconnected or damaged Repair or replace.

Malfunction of the engine control unit )

Replace.

Wire breakage or short circuit occurs in the Repair or replace.
harness, or the connector is improperly connected.


thats straight from the dsm factory manual for trouble shooting. chillton also suggest reason for fuel is bad inject leaking when not running and not supply the right amount of fuel at the time do to injectors.

 

[soulweaver]

Yea I got the manual and did every thing it says. This has me really pissed.

I do need to know some of the wiring

The coolant temp sensor fell off and I could have it wrong. If you have a 90 dsm can you tell me what color goes were. I also need the colors for the coolant temp sensor (air conditioning).

 

[camaroz89]

Yea I got the manual and did every thing it says. This has me really pissed.

I do need to know some of the wiring

The coolant temp sensor fell off and I could have it wrong. If you have a 90 dsm can you tell me what color goes were. I also need the colors for the coolant temp sensor (air conditioning).

as long as its stock wires the colors should be 1 gb and 2 yg can tell you were they go until i go to get my 90 gsx tomorrow but hope the colors help will get back to you tomorrow if you still need the info.

the yg should go straight to the mpi control unit and the gb tie into the tps and air flow sensor

 

[soulweaver]

no what i mean is there is a red wire and a black wire. What terminal do they go to on the sensor.

 

[camaroz89]

ill have to get back to you then by the book if green is red it be on the left side from the upper view and black were yellow it be on the left which but i can only find pics of the green and yellow so cant be for sure till you know what the colors replaced

 

[rbwtrans]

Fix the temp sensors. If you had a logger or had access to a scan tool, you would probably find that the ecu is seeing "-40 degrees" for coolant temp. That enough to flood a car.

 

[soulweaver]

The harness looks like this what color wire goes here-----> |__

I will be checking in tomorrow to see what you got and thanks for this

 

[Turbo Talon DL]

Do you have access to a junkyard to rob a connector from? You can always bust out the Haynes or some sort of manual that explains how to probe the sensor.

1G ECU Pinouts

Search for the turbo ECU pin-out for the 1g. Find the appropriate pins on the ecu and probe with a mult-meter in continunity mode. Put one end in the ecu harness and the other on the sensor harness wires. Continue looking for the coolant temp sensor. It gives instructions on how to probe it with a meter for ohms/resistance if you dont have a datalogger.

http://www.vfaq.com/mods/wayback/BradBauer/misc/temp.html

This is the temp sensors and other stuff.

 

[soulweaver]

all the junkyards don't have any dsm's around here any more and i can't read the wiring diagrams in the manuals

 

[dylnwit]

Is this the one your after?

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That's from my '90, If needed, i can probably get the plug off.

 

[soulweaver]

i need the wire colors on the thermostat. Were does each color go

 

[dylnwit]

crap, that's not the picture i had meant to put up, edited above post with right one now.

EDIT: back in from the garage

The wires that go to my plug shaped like | __ has a green with black stripe that goes to the | terminal and a yellow wire with a green stripe going to the __ terminal. This goes to the lower temperature sensor, which is part of the MPI circuit. The wire that is supposed to be yellow with a green stripe should have 4 or 5 volts coming to it with the key on according to my manual. And the wire that should be green with a black stripe goes to ground. This should be lower sensor on the thermostat housing.
The plug that I have pictured above is the upper temp sensor, which I believe is just for AC, and just an on/off, not an actual sensor, although it's plug is shaped like - -

 

[camaroz89]

well dude looks like you need a meter to shoot the red and black wire to see which ones the green and black i would think black is the black and green is the red

 

[soulweaver]

Is this the one your after?

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That's from my '90, If needed, i can probably get the plug off.

That picture is one that I need and now I need the one below it and that will be it thanks guys.

 

[dylnwit]

The wires that go to my plug shaped like | __ has a green with black stripe that goes to the | terminal and a yellow wire with a green stripe going to the __ terminal. This goes to the lower temperature sensor, which is part of the MPI circuit. The wire that is supposed to be yellow with a green stripe should have 4 or 5 volts coming to it with the key on according to my manual. And the wire that should be green with a black stripe goes to ground. This should be lower sensor on the thermostat housing.
The plug that I have pictured above is the upper temp sensor, which I believe is just for AC, and just an on/off, not an actual sensor, although it's plug is shaped like - -

Hate to quote myself, but I believe this is the info you need.
Can we get a pic of what your area looks like? The upper one should have the - - connector, not the | __ connector. There's a chance they're in the wrong holes, which won't help this issue, and might break stuff. If the upper one on your housing is the | __ connector, your ecu won't know engine temp till the thermostat opens.

 

[soulweaver]

the upper one is -- and the lower one is |__. I need a pic of both. The guy above (thanks for that pic) already submitted the coolant temp a/c. Now I need the pic of the actual coolant temp. Sorry for the confusion and I don't have a camera to take a pic atm.

 

[spyderturbo007]

So you have fuel, but do you have spark? Did you try pulling one of the plugs, touching it to something medal and making sure it's sparking?

 

[soulweaver]

So you have fuel, but do you have spark? Did you try pulling one of the plugs, touching it to something medal and making sure it's sparking?

Yes sir, I have fuel, spark, and compression. I know it's electrical. Thats all It can be and All I need as of right now is a picture of the coolant temp sensor. THE LOWER ONE NOT THE A/C SENSOR. If I can get a pic of it from a 1g then I can rewire it to what it's suppose to be and be set. Thats not a guarantee that my car will be fixed but it will be one less problem and idea.

 

[AWD_DSM08]

pull a plug wire put a plug on it have someone crank make shure its sparking just hold the top of the plug wire and dont touch ## hand to the metal your grounding it on. Ive went threw 2 coil packs and a transistor on my old 1g

 

[AWD_DSM08]

seen you already done this. Did you check all 4? and not just one

 

[soulweaver]

Yea, I did all the general checks on this car. It has SPARK AT ALL CYLINDERS, FUEL, AND COMPRESSION

 

[soulweaver]

Does anyone have a pic of the coolant temp sensor wires for a 1g. Thats what I need for my next test for my car.

 

[soulweaver]

One last cry for help before I take a sledge hammer to it.