1993 runs rough and when you put on pedal stalls

1993 VOLVO 940
Avatar
DIWSE30
  • MEMBER
  • 2 POSTS
Engine Performance problem
1993 4 cyl Two Wheel Drive Automatic 240K miles
----------------------------------------------------------------
I changed fuel pump relay , got gas at rail, changed crank pos sensor, fires will not stay running sounds rough like its not running on all four. before it would not start at all untill i changed the crank pos sensor. help !!!!!!!!!!!!
Aug 17, 2008 at 3:26 PM
Advertisement
Avatar
SERVICE WRITER
  • ✓ASE Certified Mechanic
  • 9,123 POSTS
  • ASE Certified Mechanic
HAve you checked for spark at each cylinder?
Aug 17, 2008 at 3:37 PM
Avatar
DIWSE30
  • MEMBER
  • 2 POSTS
have spark at all but I get it to start and it seems it not running on all 4 and stalls out unless I push the gas pedal in and runs rough
Aug 22, 2008 at 4:35 PM
Avatar
SERVICE WRITER
  • ✓ASE Certified Mechanic
  • 9,123 POSTS
  • ASE Certified Mechanic
IF spark is good, then check and make sure fuel pressure is in spec.

Check timing and check compression.
Aug 22, 2008 at 7:18 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.