Noisy 3 Liter
Thread Starter
|
New User
Joined: Mar 2004
Posts: 8
Likes: 0
Noisy 3 Liter
I just bought a 99 Ranger XLT 3.0 Liter with 50,000 miles on it. I noticed when I put regular gas in it the engine pings while I'm picking up speed. I tried premium gas and it stopped. I read the post about the 4.0 with 280,000 miles and everybody said it had carbon deposits but this only has 50k on it. I don't think it would have the same problem as the 4.0. I think it might have something to do with timing but I asked a mechanic and he said its all computerized and it wouldn't matter. Anyone have any ideas.
Ugly
Ugly
Post Fiend
Joined: Dec 2001
Posts: 10,562
Likes: 4
From: South Jersey
Welcome to FTE!!
Thats a very common problem with the 3.0 engines. I would first try cleaning the MAF sensor, see the tech info post on the procedure. Also Ford has a TSB on this topic and I think there are a few posts with the TSB shown, try a search. The TSB has them replacing the coil depending on the number, replacing the PCM, and if needed making some other adjustment to the programing.
Thats a very common problem with the 3.0 engines. I would first try cleaning the MAF sensor, see the tech info post on the procedure. Also Ford has a TSB on this topic and I think there are a few posts with the TSB shown, try a search. The TSB has them replacing the coil depending on the number, replacing the PCM, and if needed making some other adjustment to the programing.
New User
Joined: Mar 2004
Posts: 8
Likes: 0
> XLT 3.0 Liter with 50,000 miles on it
> ..when I put regular gas in it the engine pings
Automatic? Afaik, the 3.0 gets is peak torque around 3750 rpm and peak horsepower near 5K. Automatics seldom rev past the torque peak unless you really hammer them, so I'd treat it as a carbon buildup situation.
If not an auto, it may have been driven easy and lugged around. Same remedy.
Does it have a stock chip? A tweaked chip could create a need for higher octane.
Something else to chew on.... In the winter months pump gas has more oxygenating additives to lower emissions in colder running engines. If your brand is heavy on the alcohol or MTBE, it could create detonation.
> ..when I put regular gas in it the engine pings
Automatic? Afaik, the 3.0 gets is peak torque around 3750 rpm and peak horsepower near 5K. Automatics seldom rev past the torque peak unless you really hammer them, so I'd treat it as a carbon buildup situation.
If not an auto, it may have been driven easy and lugged around. Same remedy.
Does it have a stock chip? A tweaked chip could create a need for higher octane.
Something else to chew on.... In the winter months pump gas has more oxygenating additives to lower emissions in colder running engines. If your brand is heavy on the alcohol or MTBE, it could create detonation.
Thread Starter
|
New User
Joined: Mar 2004
Posts: 8
Likes: 0
Sorry I didn't put all the needed info in. It has an automatic with overdrive. I just bought it for a dealer so I'm not sure about the chip. What gets rid of the carbon build up? It also bounces alittle when it idles.
Ugly
Ugly
