I have a 90 S-10 Blazer 4.3l and recently had a rough idle and stalling out after a few minutes of run time. The check engine light came on at highway speeds and I pulled a code 32 of the ECM , reference back to a faulty EGR circuit. The EGR was dirty and plugged beyond cleaning so it has been replaced.
Did a tune up - cap, rotor, plugs, wires as well. The rough idle is gone and it runs at idle fine. I power brake it in drive and reverse and it does not seem to want to stall.
The only time it stalls now is after reaching above the speeds of 15 mph or more and only stalls when I brake at lights. Did another code check and found nothing in the system. Set the e-brake and power braked it again and still only stalls after reaching above 15 mph. I know it seems to be getting enough fuel if it wont die after power braking it. What else could be cause a stall only when reaching above 15 mph and braking ?