95 Jetta III 2.0L will run rough and sounds like it's miss-firing. Currently won't start (turns over and sputters). Sometimes when I try to start it, it runs fine. The next time I start it, goes back to sputtering. Got check engine light a few days ago with error codes 00515 - hall sensor short intermit, 00513 - Engine speed no signal, 00525 - O2 no sig intermit, 65535 - ecu deffective. Drove it home and the engine light did not come on. Tried replacing coil with no change. Ideas?
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change the wires and see. idout it thoue it wouldent throw o2, andecu codes for that, it would just run bad. i think it is definetly a computer problum unforchanety idont know anyting about that but the ground wire seems like a good place to start
The guy I bought it from said to mist some water around the plug wires while it was running. If it arcs then the wire is bad. It started a few minutes ago and I sprayed the around the spark plugs with no arcing.
While it was running it shot out a couple ounces of water out the tail pipe. It ran for about a minute and then died. I started it again and tried to give it some gas and it immediately died. Could it be th O2 sensor? That was one of the errors codes. Could a bad idle leading to low power also cause the "bad ecu" error I got?
After monkeying about some more looking for worn wires and loose connectors I found this connector with two wires hanging off of it. It looks like a big tin can. I pulled off the connector and the engine ran for a couple minutes before it died this time. What is it?
I though that connector went to that canister thing but uppon closer inspection, the wires leads under the frame somewhere. I bypassed the break with no results. I pulled off the two spark plugs I can get too and they are a little sooty but look ok. Through the last several days now the engine light has never lit up.