<12K Svc Eng. Soon light on S-Crew

[Bighersh]

Anyone else had this problem? Read on- Driving along on Northbound LBJ/635 the other day, my Service Engine soon light came on. I've been driving F-150's & Expy's since 1999, and I've never seen that light come on. This was in my 2001 S-Crew, with 10, 339 miles on the odometer. May 28th, it'll be a year old. Anyhoo, I remembered some friends & family with Pontiac's in particular (Bonneville & Gran Prix) that told me, when that light came on, they didn't make it a block before the car died. So, naturally, I was worried sitting in traffic on LBJ. So at my next opportunity I jumped off of 635 (Traffic jam) and took Plano Rd. to Campbell & over to North Central Ford in Richardson, TX. (Formerly Baillargeon Ford) This was Saturday, and surprisingly enough, they could help me (Most service departments only do oil changes on Saturday.) I dropped it off at 10:40, at 2:10PM, they'd finished me up. They called me, we went & got it, and the Service MGR told me the RFO (That's telecom for Reason for Outage) was due to: "A failed dual-feedback sensor to the EGR valve". I asked him to explain, and he told me any number of things could have caused this sensor to fail. Excess carbon build-up, bad-gas, etc... My gas cap was on tight, I knew what that could do. He replaced it, and it's running like a champ. It never ran differently when the light came on though, but remembering the problems my friends have had, seeing that light come one gave me a moment of pause. I guess I better start putting in a national brand (Exxon, Texaco, etc.) instead of the cheapest I can find. But, cheap gas has done me well in my 00 Expedition & 99 S-Cab. Anyone else had this problem? Also, has anyone noticed that their 4.6L 2001 S-Crew requires 5:20 oil, not 5:30 or 10:30? I'd never heard of 5:20 and just assumed I was getting 5:30 all along.

Register today or sign-in to remove these ads!

[dcovell]

5-20 oil is what Ford is requiring in almost all of it's engines now. It gets a little bit better gas mileage and the thinner oil will coat the parts quicker. The overhead cam and the tight tolerances calls for an oil that can circulate quicker, ie a thinner oil. So go out and get some of that 5-20. If you can't find it then the 5-30 will still work fine, just best to use the 5-20 though.

As far as gas goes, I only use Cheveron, but I have a chip so I use the 91, and in California Cheveron is said to have the most energy content of the other gases. Arco is crap, so you get what you pay for there.

[Bighersh]

Well, I don't have many mods on either of my vehicles, but here goes:

2001 S-Crew: 4.6L V-8, 230 HP stock.
Flowmaster cat-bak dual exhaust system
3" pipes, mounted to 3.5" exit dia. x 17" long tips
K&N Filter Charger
35% front windows
20% over factory privacy glass (Legal in TX- The guys told me I could spray paint the back windows if I wanted to.)
Westin step rails-
Centerline Avenger Forged aluminum- 20 x 9 inch wheels (HP)
Tires- Goodyear Eagle LS - 275/55/60 (31.9")
Aftermarket tow bar. (Needed somewhere to mount blue oval)

2000 Expedition, 4.6L V-8, 240 HP stock. Loaded w/leather.
K&N Filter Charger
35% front windows
20% over factory privacy glass
American Racing Vanguard, cast aluminum 20 x 9 inch wheels (Chrome)
Tires- Goodyear Eagle LS - 275/55/60 (31.9")
Aftermarket tow bar. (Needed somewhere to mount blue oval)

Truck Hit list-
SS Billet grill
A.R.E. tonneau cover
Leather upholstery on seats

Expy Hit List-
SS Billet grill
Ford Factory lighted running boards
Ford Factory turn-signal mirrors
Brush guard
305/50/20" Nitto tires.


Wish List-
Powerdyne Supercharger(s)
2" rear susp- drop (S-Crew)
4- Sony X-plod 6.5" speakers-
2- Sony X-Plod 12" woofers
1- 12-disc changer
1- Sony casette player or Alpine CD/DVD/Navigation system
Cross-over with 2, bridgeable Sony X-Plod amps.


Gallery- http://www.f150online.com/galleries/...y.cfm?gnum=612

Baller-





[

[Lynchmob]

I had the same problem w/ my '01 Screw. Not the gas or cap in my case either just a bad sensor for some reason. Truck never ran any differently with the light on or after it was fixed. Light came on again just recently for a different sensor. Again, no problem running just needed new sensor. All under warranty.

lynchmob

[pgh_medic]

My 4.6L calls for 5w 30 everywhere i lok, should i switch to 5w 20 for better gas mileage and wear and tear on the enigine or stick with the 5w 30 since that is all that has been in the truck since it was born??

[Bighersh]

I had a 1999 S-Cab & I have a 2000 Expy, both 4.6L's, both required 5w:30. (The 1999 wanted 10:30 in the summer, 5:30 winter, per owner's manual)

Only on the 2001 S-Crew have I seen it request 5:20 for the 4.6.

[rmg]

I had the exact same problem on my 01 Screw with only about 5k miles. Tech at dealer stated gas cap had a leak and replaced gas cap. No problem since then.