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1

In general, yes. OIL fouling of the spark would be the correct assumption. However in this particular motor, which is notorius for blown head gaskets and lower intake manifold gasket leaks, allowing coolant into the combustion chamber I would take a look at these first, and in order. 1. fuel pressure, this all started after you ran out of gas correct? ...


3

As @FredWilson pointed out, there is no relearn for a heater circuit code. On a 2.3 Check for power at the ECM connector C pin 13 (white). On a 3.0 Check for power at the ECM connector C pin 1 (black/white). While the o2 heater wire may have power there may be a break in the wire that goes to the ECM. This wire tells the ECM that the heater relay is ...


0

http://transmissionrepairguy.com/transmission-solenoid/ There are 6 solenoids in a automatic transmission (from the transmission guy repair website) Torque convertor clutch solenoid, 2-3 upshift,3-2 downshift, 1-2 upshift, pressure control, Torque convertor clutch pulse width modulation solenoid valve. Transmission Solenoid: Function & Common ...


2

Four things can throw this P0420 code, Bad catalytic converter bad upstream O2, bad downstream O2, fuel ratio problem, rich or lean, which can be even more complicated to sort out as suggested in the article.


3

Dealing with mechanics If you're going to take it to a mechanic anyway, you are probably better off letting that same mechanic do the diagnosis and obtaining the correct part(s). Bringing parts and a diagnosis to a mechanic is likely to get as warm a reception as bringing your own eggs and raw bacon to a restaurant and asking them to cook you breakfast. ...


4

There are scanners that will talk to OBD1 computers, but most shops (I would guess) don't have the equipment anymore. I got rid of my OBD1 equipment last year. I've seen ≤ 2 cars that required me to use it in the past 4 years. Maybe a GM dealer would still have the equipment. You would have to call around and ask. By jumping pin A to pin B on the ALDL ...


4

The check engine light comes on for issues that the ECU can detect from its many sensors. The ECU controls fuel and spark. This means the ECU will not come on for mechanical issues that cannot be detected by a sensor. However, some of these items can cause a misfire code. Some Examples: Air filter clogged Exhaust leak plugged cat clogged fuel injector ...


3

There is know way to know how the software was programmed for any given car, from that I know most systems will not do a fuel tank integrity vacuum check when the tank is either past 3/4 or below 1/4, so filling the tank will extend the time before it re-runs the test and turns off the CEL if the test passes. The test will only run when the tank is between ...



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