I encountered trouble with my 02 F150 this weekend. It runs fine on flat ground but shudders when I increase the fuel on hills. I initially wondered if it was a transmission issue as I had just changed out the filter and AT fluid but I now think it is just a fuel issue. I got a "service engine soon" light on the dash but I may have done myself a disservice by cleaning the battery posts as that has now been re-set I guess since it is not coming on. I have a scan tool but have not tried it yet. I was on my way to the lake on Sunday and was 100 miles from home when this appeared out of the blue. I continued on the rest of the way - another 80 miles or so - and then came back on Tuesday. It acted the same - never got any worse - was just unhappy climbing hills. I ran the last 100 miles at normal speeds of 65-70 mph without any real issues. It just did not like climbing the hills closer to the lake. If speeds dropped to 50 mph I had some difficulty climbing back to 60 mph.
Anyone encounter this sort of thing? My brother-in-law, the mechanic suggests it may be an oxygen sensor but says get the scan tool on it and see what it says. Good advice I guess. I initially wondered if it might be as simple as a fuel filter plugging up. Also wonder if it might be time to change spark plugs. It has 110K miles or so. Had about 92K miles when I got it. I have yet to change plugs. No idea if PO ever did. Starts fine. Misses a little at idle when cold. Didn't seem to be missing when I got home and it was hot. I sat in the truck with the motor running for a couple of minutes while I gathered stuff and it was smooth enough that I looked at the tach to see if it was running. Randy _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
