i have a 89 f150 with a 300i6 it has no power and the check engin light flashes codes driving down the road but i cand get coads out using diagnostic plug some days it runs good some days it runs bad more than good anyone have any ideas its working my nerves

 

I think you're driving my truck. LOL! Now mine won't run at all.

 

was it doin the same thing as mine im thinking computer but i dont know with it being obd1

 

Yes. my codes were egr related. I did notice that it ran better on warmer days, than cooler. I replaced my MAP sensor, and it ran much better. Now, I think mine is just a fuel system issue. Mine ran erratic some days (like I was running out of gas), and others, it ran like it was new, but when it would act up, it would be only after driving 8-10 miles, every time, avg. speed 50 mph. Here are the codes mine is giving now: 96, 95, 63, 32. I'm certain that code 63 is related to low bat voltage. Code 95, 96 are fuel pump related, which would explain why I have 0 fuel pressure. Could they mean a bad PCM, or simply a bad ground?

 

it dosnt look good lookiong at the cods in my book i would check the grounds if there ok i would get the computer checked i cant even get the codes out of mine