1983idi
Registered User
As the title states I have intermittent weak power. Only notice it when towing on the highway. I am only towing 5000 lbs at the most. Probably closer to 4500. Most of the time I can tow at 70 mph no issue on the flat and mild grade hills. Obviously it slows down going up larger hills a little bit. But sometimes I will loose speed (either from going up a hill or just not paying attention to my speed) and the truck will not get back up to speed even when matted to the floor until it decides it wants to start accelerating again so I'll get stuck at 55-60 mph for several miles. Problem is not new but seems to be very slowly getting worse. I have a Facet lift pump installed and a 3G alternator but truck is stock other than that. I have the issue with both front and rear tanks and it doesn't matter if they are empty or full so its not broken pickup tubes. I'm thinking possibly high pressure injector pump or injectors but I'd really like to verify before throwing almost $2,000 at the truck to replace all that.