Code 55 does anyone knows what this is? I used the key method to retrieve code.

 

If you are looking the flashing light reading method.

Be Happy.
55 is a end of scan message.
All codes are before the 5 5 blinking code.

 

Code 12 and 55 are good. 12 = battery disconnect and 55= end of test.

 

I'M having trouble, Sometimes when you start it it will die and when going down the road it will cut out. I thought it was the fuel pump so I checked the pressure on it and it held at 49 psi. Anyone have any suggestion?

 

Could be too much dirt in the gas tank. That can cause intermittent problems as dirt gets stirred up (go over a bump for example) and plugs the filter, then falls away and the filter becomes unplugged.