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New XFI problem/repair/documentation; A few small thins
Topic Started: Dec 12 2011, 08:18 AM (1,092 Views)
the300zxmaster
New Member
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Transfered this info from my intro to the tech section to document my repairs for help/sugestions and future reference for other members. :D

The first thing I noticed is the reason the fan is on constantly. You can see the wire crapily spliced into the fan wiring. The wire runs into a 12v source inside the fuse panel. I didnt spend time on it but will go back later and test the fan switch and circuit to determine why they have it wired directly.

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The next thing I noticed was these wires spliced into the fan switch. They appear to go somewhere over near some jumbled a/c wiring. (someone has had an a/c system installed, compressor is locked up though).

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This next picture is of an unkown plug. When i unbolted the underhood fusebox it was under there. It is connected to a fuse in the block. I forget what size.

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Next picture is quite obvious, lol. Mangled thermostat.

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Here we have a picture of the rotor. The one on the left is the one on the car and the one on the right is from the parts store. The groove is 180 degrees and when installed would be pointing the opposite direction.

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The coolant lines going to the TB werent clogged but had a little build up. Cleaned that out

The pcv valve was completely clogged and was a slight pool of oil in the air filter housing. Cleaned that up as well



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metroschultz
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Please just call me; "Schultz"

That rotor will work.
It isn't the spring tensioner that determines installation direction.
Look deep inside the hole,
there you will see a small tab at the bottom,
That tab fits into a slot on the distributor shaft,
The slot and tab determine the orientation of the rotor.
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the300zxmaster
New Member
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Ok, thanks. Ill have a look when i get home.

Im curious about the random plug in the fuse block that isnt connected to anything. And i need to test my fan circuit as well.
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the300zxmaster
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New problem i found tonight.

I let it idle up to operating temp. I then tried to rev it and it was hesitating really bad and eventually shut off and wouldnt crank back up. Two hours later it fires right back up with no hesitation.

No check engine light. I know on my 300 i can have codes with no light. Is it the same for a geo?
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the300zxmaster
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the300zxmaster
Dec 12 2011, 10:21 PM
New problem i found tonight.

I let it idle up to operating temp. I then tried to rev it and it was hesitating really bad and eventually shut off and wouldnt crank back up. Two hours later it fires right back up with no hesitation.

No check engine light. I know on my 300 i can have codes with no light. Is it the same for a geo?
I got up this morning and it did the same thing. Any ideas?????????
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Tofuball
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Strange Mechanic

Fuel pressure? Ignition or cam timing?
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Bad Bent
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Facetious Educated Donkey

Fuel injector? TPS?

Sounds like it could be either lean or flooded when you rev it.
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the300zxmaster
New Member
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I didnt have much time to tinker today but this is how it happend.

Got home checked codes. Pulled an air temp sensor code. Have this because I fiddled with the connector so i disregarded this immediately.

Next I saw that the heater core hoses looked all out of place. There was a hose going from the therm. housing to the lower pipe that comes from the water pump and then the two ports on the TB went to the heater core. Soooo what I did was.... I started with the port coming off the pipe for the water pump and hooked it into the heater core then from the other heater core port i went to the TB, then fromt the other TB port i placed the check valve (im sure thats the wrong place for it) then into the thermostat housing. The heater works now and i dont see anything leaking inside the car.

I noticed while running there was a vacuum leak. Under the air intake assembly the nipple connects to a piece of tube and some weird cylinder with two ports and then to what appeared to be an idle control device. I reconnected this and everything seems fine although i did not have a large amount of time to test it.

I tested the fan circuit by jumping the connector and the fan came right on so i will just put in a new switch.

Once I replace the t-belt and water pump this weekend i will set the timing and see how it goes.
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the300zxmaster
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I also saw these clips that had nothing attached to them. No clue where they go.

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the300zxmaster
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I cant seem to find a schematic for those wires^^^^^^^^^^^^^^^
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86FIFI
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Lots of useful info here. :shake
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