P0174 Code Driving me crazy

[dkozloski]

Starting fluid works fine and it doesn't take that long for your hair and eyebrows to grow back out.

[sherfield2002]

Do the blue seals come in a pack of 5? I told the dealership I needed 8 and they sadi they were 5 in a pack? They wanted $9 so I hope thats for 5 and not 1

[ewill3rd]

Yes they come in packs of 5.
It is the whole hot dogs/buns thing all over again.

You have to have 8, why they come in 5 packs I will never know.

[OffThaHorseCEO]

Originally Posted by sherfield2002

Do the blue seals come in a pack of 5? I told the dealership I needed 8 and they sadi they were 5 in a pack? They wanted $9 so I hope thats for 5 and not 1

Originally Posted by ewill3rd

Yes they come in packs of 5.
It is the whole hot dogs/buns thing all over again.

You have to have 8, why they come in 5 packs I will never know.

part number?

[ewill3rd]

PM member "Lindsay Cadillac Parts" with the last 8 digits of your VIN.
Luke will give you pricing and part numbers at your request.
I don't know them off hand.
We can certainly sell you 8 even though they come in 5 packs.
(at least I think they can, they sell them to our customers that way)

[sherfield2002]

According to my local dealership the part numbers are

plenum - 12555840
seals - 12557497

[OffThaHorseCEO]

thanks guys

[pugel]

I got my parts from Luke and replaced them last weekend on my 2000 deville. It has never run this nicely. I had about a 2 inch crack in the plenum boot. It also looked like maybe 2 of the intake seals were maybe leaking too as the mating area around them had different discoloration than the rest. Thanks to all.

[DIS DTS]

Are there any special tools needed, maybe to remove the fuel rails.

[Ranger]

I think there is a fuel line quick disconnect tool, but I think you might be able to do it with pliers. I did on a '96 Bonneville, but not 100% sure on a Caddy.

[ewill3rd]

I leave the fuel rail connected and just swing it out of the way, bungee it if you want to.
No special tools needed.

[holgatelbi]

2000 Seville SLS Plenum boot & intake seal replacement.
Getting 0171 & 0174 lean codes and 0101 MAF code.

MRVSPITBULLS has an excellant step by step for replacing boot & intake seals. It is in N/S Tech Tips "2000 Plenum Replacement" I think.

Stealership wanted $560 & said it was a 4 hr job. Took me 2-1/2 going slow & $73 for parts (8) 12557497 & (1) 12555840

I have to thank all that have contributed to this thread & the regulars that help us weekend warriors all the time. I followed MRVSPITBULLS directions almost to a tee & had zero problems with this repair. And I'm a carpenter with just enough tools to get me in trouble. Working in a stone driveway & not a garage it took me total of 2 1/2 hrs. That was going slow so not to screw up this marvelous piece of engineering called the NORTHSTAR.

The only changes or deviations I made were the following:

1. I blew off the whole area with the air hose prior to any disassembly, hoping to avoid dirt getting where it shouldn't.
2. Move step #5 up to step #2.5. I fought to remove airbox & tube (I'm a carpenter) w/o removing Radiator overflow.
3. Per Jim Hare - loosening the bolt that holds the metal fuel lines near TB helps give you more movement in fuel rails.
4. I found an extra plenum bolt sleeve precariously sitting right next to an intake port when I removed the plenum. I checked to see if I had dropped it. But, I had 10 bolts & 10 sleeves in my hold cup. Sleeve must have come from the factory. Had it fallen into the port while I removed the plenum - I would have never known it & probably would have blown the head apart.
5. Per SUBMARINER409 - oil on injector "O" rings helped reassembly.
6. Not trying to make me seem like a dumby, but was I surprised to find a starter buried under all of this mess!!!!! Should I have replaced it while I was in there? I didn't. Car has 83K on it & never (touch wood) had a starter issue.
7. A good cleaning of all mating surfaces & vacuuming out of all ports before reassembly.

That's about it - pretty uneventful procedure - thank God. Runs smooth & strong again.
And thanks again for all the help this forum provides.

[holgatelbi]

I found this post to be very helpfull on my 2000 SLS repair. Had rough idle & Was getting 0171 & 0174 codes plus 0101 MAF code

PLENUM BOOT REPLACEMENT by MRVSPITBULLS

1) Removed gas cap

2) Pop hood remove Top cover and bleed off pressure from fuel rail pressure relief valve

3) Unclamp the top line on the coolant jug (a little might come out) Lay it to the side
(I moved this step up from #5) Holgatelbi
4) Take off top of air box and air tube closest to TB, unplug MAF plug

5) Just loosen the 10mm nut that holds fuel lines down and undo lines from the black clip on top

6) In front just unhook one vacuum line and unplug the plug going into coil pack

7) In back just unhook the vacuum lines that are in the way (I think it was 4 or 5 of them) and unplug the plug going to that coil pack

8) Take the 4 10mm bolts out that hold the fuel rails down

9) Carefully pull up on the fuel rails evenly, they will all pop out together, pull them straight up together you'll have to wiggle it around a little but you can get enough room to work

10) Take the 10 10mm bolts out of the manifold

11) Loosen the plenum bolt (The strap clamp) there are also 3 10mm bolts that hols the plenum in. You'll see them from driver side, pretty easy to get to

12) Hold the fuel rails up out of the way and start from passenger side and lift the manifold up and out

13) Turn manifold over replace all 8 Blue gaskets (most local parts stores have these $15-$20 for a set of 8 )

14) Take off old plenum ( I used a big screwdriver and pryed up around the sides)

15) Put your $30 new plenum on (the same way the old one came off)

16) I took my shop vac and vacuumed out everything so nothing would fall in engine, then just wiped it down with old shirt rag

17) Hold fuel rails back up and drop the manifold back into its home

18) Reassemble everything you just did. On the manifold bolts just start in the middle and work your way around, don't tighten till there all hand tight. 89 INCH lbs has been posted by others. Holgatelbi

That’s pretty much it. Of course inspect everything as you go.
When I did this job all 10 of my manifold bolts were loose like all of them were just hand tight. I thought that was crazy.