This' ll be a long post but bare with me for specifics. I'm currently sitting at or just about 152,653 miles. around the 145k mark I've been noticing a random hard start in the ( cold) mornings. I didn't think much of it since it only happened on cold starts. Now I'd say around the 150k to now I've been footing the pedal just to get it to start in mornings or if it sat to long, say when I got off an 8 hr shift. So far I have checked the Mass Air Flow Sensor, purge valve, all seem to be functioning properly but sitting at 150k I went ahead an put new ones in. I also replaced the driver module and tried to start it up and it wouldn't even crank over so I put the original M.A.F,& purge valve AND Driver module back in and it fired up after cranking and "yep" footing the pedal once again. So, after all that I thought well maybe It could be just the simple fix in fuse #27 that I heard so much about constantly blowing. NOPE, fuse 27 is still fine, so then I checked if it was the pump, had my girlfriend sit in the truck and put the key to the ON position so I can stand next to the filler hole to listen to it buzz, The buzz goes off for the 2-3 seconds but I had her do it twice the other day with one buzz so slight of hearing it you literally had to jam your ear in the hole but the next day when she did it I heard it buzzing loud and clear yet still it was hard starting.
What could be the problem?
You think the pump is slowly going? I'm out of options guys. Thanks for the help