Crank no start, code P0403

SAVANNAH JAMIE ROSE MCCREA

MEMBER
2001 MITSUBISHI ECLIPSE
3.0L
V6
2WD
AUTOMATIC
140,000 MILES

So I have two 2001of the cars listed above Spyder GT. One silver, one black.
The silver one was my champ, never gave me any problems until my ex power washed my motor one day. Three days later I was going about 30 MPH about two miles from my house, I turned off my A/C and suddenly the car shut off, the Neutral light was blinking but it was in drive of course, and it slowed to a stop. Tried to start her and no. I have replaced the fuel pump, relays and fuses, spark plugs and wires, timing belt and water pump, gaskets, camshaft sensor and crankshaft sensor and probably more that I'm just not thinking of right now. Still she cranks but wont start!
The black one I bought about 3 months ago for $300.00 from some dumb kid who was given the car and power washed the motor one day and she quit soon after. She cranks but mostly in neutral. Doesn't sound like she tries as hard if she's in park.
They both throw one code: p0403
I've replaced them though and made no difference?

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

This could be a number of things but the fact that you have two that are doing the same thing after power washing points to a connection or wiring issue.

Here is a guide that will help with no start issues in more general terms:

https://youtu.be/dCjmRL3p4Cs

However, I would suggest we go through the testing below for how to find the cause of this code.

More than likely you will find the same issue on both and I would pay close attention to all the steps on electrical components.

Please let me know if you have questions on this process. Thanks

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