1998 Chevy Express Acceleration

1998 CHEVROLET EXPRESS
290,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
KENTKATT
  • MEMBER
  • 1 POST
I have a 1998 chevy express 15 passenger van, v8, automatic trans. Twice now we have been on the highway at 55-60 mph and without warning, the engine begins to die out when trying to accelerate. We end up in the emergency lane going idle speed the rest of the way home. It is not a consistent problem. The repair shop could not find a problem or get it to act up...changed the fuel filter. A few days later, same problem. Otherwise, the van has been running like a top. Repair shop says next step is the catalytic converters. Big cost. Friend says it is probably the Electronic control module, a common problem on the 98 3500. He says I can replace it myself. What do you think?
Dec 5, 2007 at 7:25 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
BLACKOP555
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 10,386 POSTS
first you should check the cats, hook up a vacuum gauge after then vehicle is warm. then run it up to 2000 rpm for about 2 minutes while watching the gauge constantly. if you have to give more gas to maintain 2000 or if the pressure on the vacuum slowly goes down, your exhaust system is likely plugged.

if that is good check out your ECU.
Mar 23, 2008 at 8:33 AM
Advertisement