Questions and Answers

Nissan Maxima Flooding Out Q. Hi Vince, I have a toughy question for you. So far no one has been able to answer this, not even the Nissan place. I have a 1984 Nissan Maxima 6 cylinder L24E. I am trying to read the computer codes, but every book I have gotten on reading the computer codes on this car says their is a diagnostic switch on the ECU that I should either turn on or off or use a screwdriver to turn clockwise and blah, blah, blah.

Anyways, I would love to do either one of them to enter the diagnostic mode, but I don't have a switch or anything. All that is on the ECU is a green light that lights up when you turn the ignition on. That's it. No switches to enter diagnostic modes. Can you help? I have two 1984 Nissan Maxima's and they are both identical. No diagnostic mode switches on either of them. Just a green light and that's it. The ECU is located under the passengers seat on both vehicles. Can you help?

My problem is the car keeps getting flooded and when I'm driving it and dies on me. If I take the plugs out and turn the engine gas shoots out of the #5 cylinder. I replace the plugs and it starts back up, but as soon as I drive it down the road it does it again.

Thanks...

A. The reason no one can tell you how to access the trouble codes in that computer is because that computer does not have diagnostic capability. There was a special tester that the ECU connector fit into that tested the entire EFI system. If everything checked out as good, then it was assumed the ECU was bad. Nice tester, it set me back $1500.00 and I haven't used it in over ten years. It did the L24E and L28E engines. There was a special one for the turbo-charged L28ET engine.

So if #5 cylinder is filling with fuel, you probably have a bad injector or a bad ECU. Unplug the injector and if fuel still comes out, it's a bad injector. If the fuel flow through the injector stops, then the wire from the injector to the ECU or the ECU itself is bad.

Guess these young pups don't know too much about a classic car like the 810 Maxima or 280ZX.