1993 Mazda b2300



December, 22, 2010 AT 6:04 AM

1993 mazda b2300 p/u with a 4 cyl the engine starts up idles fine but when you put it in first gear and step-on the peddle it wont accelarate properly like when the peddle is stomped to the ground it just bogs down and does'nt pic up speed what could it be, ( tps, idle valve, maf?) This might help< when the engine is in neutral and I manually apply the throttle at the throttle body (hold open) then the engine rpm go up and down, up and down with the throttle held in one posistion say 3/4 open.4 cyl engine with plugs on both sides, two coils

1 Answer



December, 26, 2010 AT 11:13 AM

Check the fuel pressure and MAF. These are the most likely fault. Check for vacuum leeakages between MAF and throttle body.

Have you tried to retrieve for trouble codes?

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