SOURCE: 1996 Chev. 1500 pickup truck, 305 C.I. PO300 code
Than you problem solved by yourself already,
Dear you had done good job for your dream,
just some modification nedds like,
CHECK YOU ENGINE MOUNTINGS,OR THIGHTEN IT,
YOU HAVE TO ALSO CHECK YOUR PLACEMENTS ORDERS OF YOUR ENGINE THAT NOT TO BE CHENGED AFTER YOUT TRY.
THNX
SOURCE: code po507
have you checked the idle control connector where it plugs into your throttle body for a good connection.
SOURCE: Car runs greAt BUT FLASHES LITE PO300 P1781
P0300 is a random engine misfire code. P 1781 is a transmission code, but it refers to a malfunctioning engine speed signal (crankshaft angle sensor). A bad crankshaft angle sensor or camshaft angle sensor can cause the P0300 code. A large list of items can cause a P0300 code, but since you have both, I'd be checking the crankshaft angle sensor and the related circuit. Sometimes, the mounting screws loosen up, which can cause the sensor to not function properly, all the time. Get this fixed, because over a period of 4 to 6 months, this can destroy the catalytic converter in the exhaust system ($$$$)
Charlie
Testimonial: "This was really short and sweet and it was understandable too. thanks "
SOURCE: code po300 comes on when you drive p1133,po171
code P0300 means random cylinder misfiring, have u checked spark plugs and cables
SOURCE: Chevy S-10 p0300 and po507
if it is reving at idol I would be checking my throttle body for air leaks your computer will tell your engine to loop higher, to try and correct the readings it is getting.
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Dtc P0122 is Throttle/Pedal position sensor circuit low input, P0300 is Random cylinder misfire, P0171 is lean running condition Bank 1 , P0507 is Idle air control system revolutions per minute higher then expected. My suggestion Since basically all issues are in same component system I Would do whats called a "wiggle test" Because all codes stem from low voltage signal possibility is wiring loom is routed around motor . Crossover exhaust pipe dissipates extreme heat in vicinity of bulk wire loom, possibly melting insulation on wires causing opens and/or shorts. since all symptoms are all pretty much located around throttle body area ,logically thinking wires would be grouped together in same loom. while vehicle is running at idle, grab small ares at a time and give them a wiggle and at same time listen for rpm drop or increase if engine runs better or stops abruptly problem lies in the area you where wiggling at. so try and wiggle a little at a time. Hope this helps good luck
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