87 240DL- The Saga Continues- Hesitation + Bucking

[Harry von Zell]

Boy, I love/hate the Volvo Bricks......

My baby still hesitates off a dead stop (ONLY when engine warmed-up) and bucks at cruising speed (40-55) when not accelerating. I can blast through the hesitations by flooring it..

New parts so far:

AAM
Fuel Filter
CAT
25 amp engine fuse
In-tank Fuel Pump
Fuel Pump
Fuel Sensor( the module above the passenger side leg space.)

I'm ready to try Voodoo---AARRRGGHHH!

TIA, Harry

[wojeepster]

Check the accordian looking hose that goes from the air mass sensor to the throttle body. Take it off and look through it looking for holes. They sometimes rub on the fender and get a hole worn in them. This allows unmetered air in........

[Harry von Zell]

Accordion hose OK.

I'm getting a different set of eyeballs on it tomorrow. Will post the findings.

Thx, H