2001 3.8 rough idle , miss fire , running lean and loud pinging
Ok, so I bought a 2001 5speed 3.8 with 140k miles for cheap because the guy didnt know what was wrong . My dad said immediately the coil pack. We changed it and ran great. Only remaining code was p1518 which was these little bushing for a lever for a valve at high rpms he said .where gonna wait to do that . The car drove great for about 2 months . About a 2 week ago everthing just went to crap. The car miss fires so bad the engine light blinks . It will even stop accelerating for split seconds at times .most if the time it pings loud and drives crummy . Sometimes it seems when I'm almost on an empty tank it runs a little better and the pinging isnt so bad .for about the first 7-10 days there was no new codes. The it got worse So I cleaned the MAF and throttle body, it seemed like it helped for like 50 miles . I do have two new codes for 2 cylinders miss firing now. I reset it and drove for a week I'm gonna re run codes right now to see what I get .
Keep in mind it has new
Wires look to be not to old
What stumps me is I didnt have new codes tell it got super bad .
Any one have any ideas?
This fuel related since sometimes it runs a little better ? And because the ECU didnt throw a code . My dad was a mechanic a loooonngggg time ago but isnt a pro. Hes stumped as well , he said maby go to junk yard and get a maf and throttle body since the work together with fuel and air.
Please reply or PM with any information.