Throttle position sensor problems...

[Om1kron]

On my s14.

I have an s13sr redtop

I've had some electrical gremlins which so far I have narrowed down.

Now I can get the car to turn off, and to turn on normally.

But when I give the car gas, it's almost like it's closing the throttle from open rather than opening the throttle.

I know this doesn't make a lot of sense, so I'll post a video in a bit.


Just in case you may say it is my MAF... the car idles perfectly, sit's at about 2k (I've yet to let it "warm up.") due to a coolant leak on the back of the block, and I don't have my electric fan completely wired up.

Here are the electrical readings.

A. .125v -
B. 02j
C. 02j

[rex2sx]

?...It starts at .125?..what is 02j

Are they your TPS readings. Their usually .3-4.5v but they do vary, a bit.

[duffman1278]

iirc you're tps voltage should be at .37V closed throttle.

What are you at?

[Om1kron]

?...It starts at .125?..what is 02j

Are they your TPS readings. Their usually .3-4.5v but they do vary, a bit.

I'm going to assume it means jewels... or whatever jules.

that's the black/white wire on my maf. I'm going to take readings from the tps sensor right now.

[rex2sx]

yea it means joules but you shouldnt be getting any joules reading on a maf.

Its like a lil over 1v at idle and increases as rpms increase. But again, the numbers can vary. I know map readings need to be over 1v at idle so i think its the same for MAFs, correct me if im wrong.

[Om1kron]

I think the eccs relay is at fault here, the car starts up without it attached and is doing the same thing. I tried switching it around so the constant power goes to the mafs but it wont start.

lulz!

The fuel pump stopped priming for a couple of cranks as well. Figured my ecu patch job went bad, pulled the ecu apart and everything checks out. Ran a voltage check with the car in the on position and everything checks out.

Whats strange is I had to crank the key without the clutch depressed and magically the fuel pump primes again.

Talk about electrical gremlins. I'm afraid to take the car on a test drive under these conditions as I've been going to the gym and don't think I'll be able to push it back home lol.

[rex2sx]

Lol wow, you got corssed wires somewhere. Gl, man.