On Thu, 14 Oct 2004, Mike wrote:

> Any ideas how to resolved a 95 Neon SOHC 2.0l engine that is running
> rich?

You don't do yourself any favors by putting in a "cold air intake". That
"mess of tubing, air box and baffle" needs to be there; put it back. With
your Ricky Racer, Jr. "cold air intake", fuel economy will suffer,
emissions and engine wear (via oil contamination) will increase.

> If this was a carburator, the issue would be resolved, but because
> everything is controlled by the ECU, I really do not know how to
> resolve this issue.

Same as always: Proper diagnosis and targeted repair. Your rich running
could be caused by a number of rather minor and inexpensive faults, but
guessing and throwing parts at it is the wrong way to do it.

Start by checking the codes.

To check the computer codes:

With the engine off, switch the ignition key on-off-on-off-on,
leaving it "ON". Do not
go to "start", just "on" during this procedure.

Watch the "Check Engine" or "Power Loss" light. It will turn on, then go
off, then will begin to flash-out any trouble codes that have been stored.
For instance, if it flashes:

flash <pause> flash flash
<long pause>
flash flash flash <pause> flash flash flash flash flash
<long pause>
flash flash flash flash flash <pause> flash flash flash flash flash

Then you have a 12 (one flash followed by two) a 35 (three and five) and a
55 (five and five). 55 means "end of codes" or, if by itself, "No codes
stored. Check the codes and report what you find.