In 4th or 5th gear at highway speed truck will hesitate sputter or even stall.
What is your question?
Not on the highway at any RPM 1st 2nd or 3rd gear truck runs fine 4th gear 50-plus miles per hour starts sputtering or stalls. Have new distributor top to bottom new ECM, ICM, map sensor, plugs, wires, fuel filter, oil levels full, gas above half usually. If I press the accelerator to the floor and blow out the exhaust it smells not rich but more like burnt. No smoke, but super strong in a bad way. Burns about a quart a week and oil and about a gallon of water a week as well
What makes this problem better or worse?
At highway speeds in 4th or 5th gear the truck will sputter hesitate or die altogether
How long has your 1993 GMC Sonoma had this problem?
Just started after replacing column stalling at highway speeds
RepairPal Certified shops can diagnose and repair your 1993 GMC Sonoma. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Usually a technician will connect a fuel pressure test gauge so it is visible while test driving vehicle so pressure readings can be monitored - these vehicles inherently have more fuel delivery problems than ignition system failures..
Ultimately *hands-on* testing is going to be required - scan testing using a professional quality scan tool is recommended in addition to fuel pressure test.
Higher gears put extra load on engine and fuel demand is greater as well.
Ultimately *hands-on* testing is going to be required - scan testing using a professional quality scan tool is recommended in addition to fuel pressure test.