Possible electrical problem?, PROBLEM HAS BEEN SOLVED!! Options

[jordisonjr]

Alright 6gc, I tried using the search, and really couldn't find anything.

My celica is acting really weird.
Whenever I drive it, the revs randomly rise and fall really speradically. Its really inconsistant, and when they go up and down, the whoel car jerks, almost like when someone is lerning to drive 5 speed.
At first I thought it was my clutch slipping on the flywheel, but then my dad checked it out and thought it seemed for electrical.
Then my buddy checked it ou and said it was my distributor and that I should change my cap and rotor.
So I changed my cap and rotor, and its still got the problem.
I really don't know what to do, its my daily driver, and its to the point where it barely drives becasue I don't want to damage anything else.

I took a video on my phone, to give you a better idea of what its doing, I know its real bad quality, but hopefully it'll help.



This post has been edited by jordisonjr: Sep 30, 2011 - 9:37 AM

[Spider77]

Well for me it worked, not saying that its a 100% fix by any means, but I have not had any of the symptoms since. The only way to know for sure if its your dizzy is to take those resistance readings. But to make this easier, here is the text outta the guide.

DTC 12 - RPM SIGNAL (EXCEPT CALIF.)
The distributor assembly contains 3 pick-up coils. The "G" signal informs ECM of the standard crankshaft position. The "NE" signal informs ECM of the crankshaft position and engine speed.
If "NE" signal is not present to ECM within 2 seconds or more with engine cranking, check for open or short in the "G" or "NE" circuit, or for faulty distributor.
If "G" signal is not present from ECM for 3 seconds or more with engine speed of 600-4000 RPM, check for open or short in "STA" circuit or for a faulty ECM.
It also goes on to give a 3 step process on how to check this....
1.)Check resistance of each pickup coils in dizzy...if good go to step 2, if bad replace dizzy housing.
2.)Check for open or short in harness and connector between ECM and Dizzy. If good go to step 3, if bad repair or replace harness/connector
3.)Check air gap. If good check/replace ECM, if bad replace dizzy housing.
And here is a handy pic w/resistance readings


Hope this helps a bit

This post has been edited by Spider77: Sep 26, 2010 - 1:47 PM