Need Help With Code 42
basically, the car begins to hesitate when i gas it. it idles PERFECTLY though. it will hesitate even at WOT. not always though sometimes it runs perfect too. i cleaned out the salt and pepper plugs, the spark plugs are new, changed them twice actually, spark plug wires are perfect (new), new cap (3 different ones), new rotor (2 different ones). Put a new TFI, same thing. no vacuum leaks. if it were a sensor, what sensors work during WOT? or maybe coil? maybe pick up in distributor? how do I check those? cleaned MAF, o2 sensors are new, ran fuel pressure gauge, fuel pressure stays perfect during hesitation.
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1993 Mustang GT - 3150lbs -
Twisted Wedge Heads; Track Heat intake; E303; 1.72rr; 190lph fuel pump; 24# inj.; AFPR (42psi); K&N; March Ram Air; Pullies; 76mm MAF; 70mm TB; 1 5/8in Long Tubes; 2.5in OffRoad HPipe; Flowmaster 2.5in Cat-Back; CutOuts; 18* timing; 3.73's; Spec Stage II; Aluminum DS; Electric Fan; Aluminum Radiator; Pro 5.0; short belt; Sub. connectors; Upper & Lower Control Arms; 3G 160amp Alt; Torque XS starter; TFS valve covers
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