CA18DET TPS WIRES?

Discuss topics related to the CA18DE and CA18DET series engines.
Sil40sK
Posts: 308
Joined: Wed Jun 15, 2005 5:28 pm
Car: '93 Nissan 240SX
'88 Porsche 911
'02 Ford Focus SVT
Location: Northville, Mi

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So I tried starting my car again today, starts up sputters real quick and dies. I can keep it running by giving it repeated pumps of the throttle, or holding the throttle down, and then when I let off, I'm popping about 5-foot blue flames, before the motor goes back down to idle, sputters and dies. I ran the ECU diagnostics test, pulled 3 red, 4 green. TPS problem. I check the wiring on my tps, and the sensor itself has 3 prongs coming out of it while the plug only has 2 (a yellow wire, and a yellow wire with a white stripe). I checked in the wiring section of the FSM, and there's a throttle sensor, (with 3 wires), but there's also an "idle switch", with 2 wires going to it that are Yellow, and Yellow/White (which were the 2 wires coming from the plug that was connected to the TPS). Am I missing something here or what? Is the CA suppose to have a 2 wire TPS, or is there this "idle switch" that the tps plug is supposed to be plugged into. I'm really confused. Help me out guys. Because the only code I'm throwing is for TPS.

EDIT: I'm also running a KA24E maf, if that might have something to do with it.


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c-rad
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Car: 1991 Nissan 240SX w/CA18DET
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3 red 4 green is code 34. That is the knock sensor.

Sil40sK
Posts: 308
Joined: Wed Jun 15, 2005 5:28 pm
Car: '93 Nissan 240SX
'88 Porsche 911
'02 Ford Focus SVT
Location: Northville, Mi

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c-rad wrote:3 red 4 green is code 34. That is the knock sensor.
Then how come on http://users.adelphia.net/~rescue70/ecu.html and in the JDM fsm it says Quote »The red light will flash one or more times which indicates the first number of the code.Then the green light will flash indicating the second number in the code. So lets say the red light flashestwice and the green light flashes once. The code is "12"[/quote]??? Besides if it was my knock sensor, that wouldn't cause it to be doing what it's doing. Regardless, I was just wondering about the wiring, not the code itself.

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c-rad
Posts: 2584
Joined: Sun Sep 19, 2004 5:10 pm
Car: 1991 Nissan 240SX w/CA18DET
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Sil40sK wrote:Then how come on http://users.adelphia.net/~rescue70/ecu.html and in the JDM fsm it says ??? Besides if it was my knock sensor, that wouldn't cause it to be doing what it's doing. Regardless, I was just wondering about the wiring, not the code itself.
I don't know what FSM you are reading, but the red LED is the first number, and the green LED is the second. If you have 3 red and 4 green, thats the knock sensor.

Quoted from the FSM I have--
FSM wrote:A malfunctioning part's group is indicated by the number of both the red and the green L.E.D.s flashing. First, the red L.E.D. flashes and then the green flashes follow. The red L.E.D. refers to the number of tens while the green one refers to the number of units. For example, when the red L.E.D. flashes once and then the green one flashes twice, this means the number "12" showing the air flow meter signal is malfunctioning. In this way, all the problems are classified by the code numbers.
And what do you mean its not the symptoms of a bad knock sensor? You car is in limp mode and getting no timing advance. Of course its going to sputter and die. You can remove the TPS entirely and the car will still start and run (albeit like crap).

Sil40sK
Posts: 308
Joined: Wed Jun 15, 2005 5:28 pm
Car: '93 Nissan 240SX
'88 Porsche 911
'02 Ford Focus SVT
Location: Northville, Mi

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Okay, I was just going on what my Aunt (whom speaks fluent japanese) translated from my JDM factory service manual, and from what I had found by searching. So what should I do for a new knock sensor? I already know the KA24 one is too small, so would a 200SX or Pulsar one work? Or could I just buy a universal bosch one or something?


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