Sharps40
Old Mossy Horns
hard start, runs ruff, no power, can't be driven. Came on sudden.
140000 miles. new plugs, wires, coils, fuel pump fuel filter all in the last 2000 miles.
Went from running fine at 19.5 mpg. to shuddering under light load to start sputter clatter die. Chokes and coughs and backfires through the intake when reved in park.
MAP sensor checks out, good ground, 5.2v supply and signal of 4.7v and decreases to 1.2v with increased rpm.
Disconnecting Mass air flow sensor when running makes no change in idle quality or response.
Codes are front and rear o2 sensor bad and evaporative canister (these codes have been lit up for 5000+ miles of good running)
Good strong flow of exhaust out the tail pipe but rather rich smell of gas when reving the motor.
Have not yet pulled the plugs or looked into the valve body to see if its coked up.
Throttle position sensor?
Idle air control?
Is there and egr on this beast? I havn't found anything that looks like one on or near the intake or exhaust.
140000 miles. new plugs, wires, coils, fuel pump fuel filter all in the last 2000 miles.
Went from running fine at 19.5 mpg. to shuddering under light load to start sputter clatter die. Chokes and coughs and backfires through the intake when reved in park.
MAP sensor checks out, good ground, 5.2v supply and signal of 4.7v and decreases to 1.2v with increased rpm.
Disconnecting Mass air flow sensor when running makes no change in idle quality or response.
Codes are front and rear o2 sensor bad and evaporative canister (these codes have been lit up for 5000+ miles of good running)
Good strong flow of exhaust out the tail pipe but rather rich smell of gas when reving the motor.
Have not yet pulled the plugs or looked into the valve body to see if its coked up.
Throttle position sensor?
Idle air control?
Is there and egr on this beast? I havn't found anything that looks like one on or near the intake or exhaust.