94 chev van , no power , lousy gas milage

jpb04619 · 2012-09-05T19:21:07+00:00

1994 chev van,,41000 miles..g20,5.7 liter.4l60e,3:73 rear ratio..low mileage vehicle,in tip top condition..but it will not get out of its own way,no power to accelerate and gas mileage is lousy.....fuel pressure 12 lbs plus..checked timing with wire disconnected,0 degrees,new cap and rotor,new ignition module,new tps,compression test 150 pounds or within 5 on all cylinders,new knock sensor.. kent moore tester on all spark plug wires checks out a1...all replaced parts acdelco with correct numbers...no cel light,no codes stored..,..runs smooth as silk,starts easily

1994 CHEVROLET VAN

42,000 MILES

KHLOW2008

✓Experienced Mechanic
41,814 POSTS

That would depend on how it is working now. If you have misfirings, that can damage the catalytic converter. The engine could be running lean, rich etc.

Sep 21, 2012 at 1:28 PM

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.