t_cel_t

so you did replace all the plugs and the wires?
or did you take one plug out and figured they were all good?

im still saying its electrical/ignition in nature. pull all the wires out and check to see if there is any water down the spark plug tubes. my tercel would do that when the holes got filled with water

enikolayev

I replaced plugs, then put my old ones back in since it didn't make much of a difference. The tubes are dry as a bone. Brand new wires/cap/rotor



on a side note, i have never seen my cooling fan kick on but temps never go above mid.

bitchM0VE

Pull the cap and hose it with WD. Couldn't hurt. Spray the wires too. Could be a spec of moisture in there that evaporates when hot, and the air will ionize when moist, causing the spark to jump to ground. Do you get any kind of backfire? Try testing the coolant sensor with a meter. See what you get at cold vs. hot and check it against spec. Autozone can sometimes tell you the specs over the phone, or a service manual will.

enikolayev

No backfires.

one more thing: the o2 sensor wire was damaged so i spliced it and reconnected (without soldering). There are 2 wires coming from the harness to the sensor but only one on the sensor. Is the second one isolated ground?

Smith-02

lol, wrong o2 sensor and/or signal.

your ---- warms up gets out of the coldstart maps, and turns into runs like *** maps

Tom-Guy

You mean like a shield wire? Probably. Do you have service literature for the car?

enikolayev

No literature, the car was bought salvaged way back when.

It must be a shield wire but it is cut/chewed off 10" before the sensor and doesn't seem to belong there.

bitchM0VE

So it's a 1 wire sensor? Put a meter on it and see what it reads when warmed up. If it's showing a short to ground, or an open, dud. See what you get. Will cost you 0 dollars. I used to have a Toyota Electrical service manual before Katrina. It outlined how to properly test every sensor Toyota ever used through 95.

Hitchhikkr

He didnt mean history, he meant a service manual to check/diagnose the circuit and eventually the problem.

enikolayev

.....i know. i said there was none when we bought the car >.>

o2 sensor reads:

cold: .00-.47 v

warm: .10-.58

and it constantly fluctuates