Fairly new to me 1987 suburban with a 7.4 and 3 speed auto. Odomometer shows 48,000 (i honestly don't think it has rolled over).
mods made : throttle body spacer, jet perf. Chip (stage 1), and cat. Converter removal
recent repairs/attempted fixes: new fuel filter, new tranny filter and fluid, new cap, rotor, plugs and wires, tried a new egr valve(no difference), new egr solenoid, new O2 sensor
have checked for vaccum and intake leaks, none found
have bought but have not yet tried a new fuel pressure regulator. Have not checked actual fuel pressure.
hard accelleration seems to be fine.
i might notice a slight "miss" at idle?
have the same problem?
Saturday, October 1st, 2011 AT 10:18 PM