2003 GMC Envoy "code p0300 bad maf sensor" Questions

...p0300. Planning on cleaning the MAF, but looking for direction before buying more parts. A bad cat is something I read could cause the problem, but based on the vacuum test and the Haynes manual its ...

...code changed coil pack now p0300.sluggish ,no burnt oil from exhaust,possible bad valve cover gasket ? Yes valve cover gasket needs to be replaced, normally for sluggish I would be looking at a MAF ...

...bad MAF, and p0300 may be caused by your p0171. the actual indication for your MAF is that the voltage getting to the computer from the MAF is too low. It could be a bad MAF, or bad wire between the ...

Code P0300 What Causes It and How to Fix It Manifold Absolute Pressure/Barometric Pressure Circuit Low Input ..P0107 Random/Multiple Cylinder Misfire Detected ..P0300 1 Test map sensor, replace if bad

...code P0300 may mean that one or more of the following has happened:Faulty spark plugs or wiresFaulty coil (pack)Faulty oxygen sensor(s)Faulty fuel injector(s)Burned exhaust valveFaulty catalytic ...

p0300 random misfire and a mass air flow code ... replaced bank 2 upstream sensor and ran on lift, bank 1 upstream sensor flagged. replaced that sensor also and car still misfires badly. removed plugs

...p0300 all the way through p0308 with the exception of cylinder #6. Also have p0500 which if I am correct is maff sensor. Car runs great once above 50mph. Try to get another year or so out of the car. ...

...p0300 code is a random/multiple misfire detected code, and a p0316 is a misfire detected on start up within 1000 RPM. Some of the possible causes for these codes are as follows. You could have a ...

code says p0300 multiple misfire. Rough idle what could it be? replace fuel regulator Number of possible causes. this is worth a look: https://www.700r4transmissionhq.com/p0300-saab-9-3/ given the age

...code P0300. Also P1345 pending. I replaced a bad EGR gasket, cleaned some corrosion from EGR valve connector pins, and changed the spark plugs. Now I got a misfire code for #2 ... I'll check ...