https://www.f150forum.com/ Discuss the 5.0L engine here. en Tue, 09 Jun 2026 04:50:47 GMT vBulletin 60 https://www.f150forum.com/images/misc/rss.jpg https://www.f150forum.com/ https://www.f150forum.com/f106/1994-occasionally-bogs-constant-speed-585579/ Tue, 02 Jun 2026 00:24:51 GMT Hi, all.

I'm new to this forum, and looking for help with my 1994.

While traveling at a constant speed, 45-55 mph, it'll occasionally bog down. It slowly loses speed unless I give it significantly more throttle to maintain my speed.

If I give it a LOT more gas it'll clear up after a few seconds and launch forward like it's getting enough fuel, like normal. I doubt this is a good or long term solution, so I'm here to ask for any advice I can get.

Some other info that may be useful: When I'm giving it more throttle to try to maintain my constant speed, it hear a pop/clunk noise every couple seconds under the truck by my left foot. Also, I just replaced the fuel filter for the second time today (it bogged again 2 miles down the road). It happens with both fuel tanks too.

Could it be a bad fuel pump? Clogged tank or line? Leaky vacuum line? Sensor somewhere?

I appreciate any help offered.

Thanks ]]> 5.0L e4always https://www.f150forum.com/f106/1994-occasionally-bogs-constant-speed-585579/