My 2005 Nissan Altima engine light was going on n off. N sluggish. Twice it need ed water. Im trying to do this on a low budget. A sensor reading of PO 300 came out on the small hand held machine

Asked by Aug 05, 2016 at 06:38 PM about the 2005 Nissan Altima 2.5

Question type: Maintenance & Repair

Car check motor light keeps going on n off. Twice it was hot with no water.then ok.
Yesterday it ran sluggish n barely made it back home. At auto parts with hand held
device the # PO 300 came up which means it could b ?.has new battery. Dont know
what to do help. I replaced spark plugs and a hose.. Should i pay 100 $ to hv it put
on a bigger machine n they will see whats wrong.? Help

2 Answers

p0300 is multiple cylinder misfire I had a code of p0304 and moved my coil from 4 to 2 and the code went to p0302 so that told me that the 1 coil was misfiring and the p0300 means random/multiple cylinder misfire if I were you I would change the coils it helped me big time and gave my altima more power if the coils are misfiring it would cause that problem but first thing to change that is cheaper is change all 4 plugs first then if that don't fix the problem its the coils hope that helped

and if it needed water its a good chance the head gasket is gone that's what happened to me so I changed the head gasket and plugs and coils and that fixed mine hope that gives you the info you needed

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