
1999 Toyota Tacoma DLX 3.4L Misfire
Under load we have a misfire on cyl. 3 and 4 (codes:PO300, PO303, PO304). I have replaced the air filter, fuel filter, and MAF sensor. I have moved the coils and plugs on both cyl. with no change. I have cleaned the throttle body and checked for vacuum leaks a...
FIX posted 3/5/2014
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VIN | 4TAWN72N7X |
Engine | 3.4 L / 6 cyl / GAS |
Trans | 5-speed Standard |
Delivery | Fuel Injection / mpfi |
Emissions | OBD-II Compliant |
Symptoms | Misfire |
Occurs | Under Load |
Trouble Codes
P0300 | Multiple Misfire Detected |
P0303 | Cylinder 3 Misfire Detected |
P0304 | Cylinder 4 Misfire Detected |
Message Closed w/FIX
Vehicle Data
1999 Toyota Tacoma DLX
VIN | 4TAWN72N7X |
Engine | 3.4 L / 6 cyl / GAS |
Trans | 5-speed Standard |
Delivery | Fuel Injection / mpfi |
Emissions | OBD-II Compliant |
Symptoms | Misfire |
Occurs | Under Load |
Trouble Codes
P0300 | Multiple Misfire Detected |
P0303 | Cylinder 3 Misfire Detected |
P0304 | Cylinder 4 Misfire Detected |