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Ian
Dodge Dakota
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10/15/2003
15:19:45
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 Subject: Rotten egg smell: 2000 4.7
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Hi,
I have a bad rotten egg smell from my 2000 CC 4.7, 5spd. It is still under warranty (just!) and the dealer has been unable to do anything about it. They now say that there is nothing wrong (no code) and that the smell is normal. I say bull! There is no way a smell that bad can be normal. I drove the truck home from the dealer and my wife could smell it in the street 30 seconds after I pulled in the garage!
I have read a few posts on the board but couldn't find any definitive solutions. Anyone else had this problem and solved it?
other details: seems to be worse when cold start (ie: open loop mode) but will still do it warmed up, but not as bad. RPMs are slow to drop to idle or when shifting, will not 'hold back' going downhill most of the time. Dealer did a PCM flash as per some TSB, but it made no difference to the smell and now the truck has no bottom end torque and pings going uphill on hot days.
Thanks for any input,
Ian
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CThomp
*GenIII*
10/15/2003
16:56:25
|  RE: Rotten egg smell: 2000 4.7
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Your dealer gave you the "death" flash. They retarded your timing. You've lost pretty much every bit of power you had. I'd send my PCM to Mike Leach and have him reflash it if I were you. You can find his number in some older posts. Just do a search. As for the rotten egg smell...could be your cat converter or muffler? Just a hunch.
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DavesKota
Dodge Dakota
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10/15/2003
18:09:01
| RE: Rotten egg smell: 2000 4.7
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Message:
I had the same thing happen when I burned out the
clutch on my 99 wrangler. When the clutch was about to
die it smelled like rotten eggs.. Something to do with
sulfur in the clutch pads, I was told. probably the clutch,
that wouldnt show up on the PCM.
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Ian
Dodge Dakota
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10/15/2003
18:24:03
| RE: Rotten egg smell: 2000 4.7
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It is NOT the clutch. No slippage. Only 35000 miles. Minimal towing.
Re: "Death" flash. Is there any way to get the original code back?
It has been suggested by my friends that the cat may be partially plugged. Is there an official (ie: warranty) way to tell? Obviously it is not so bad that the PCM is picking up on it.
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Cris
Dodge Dakota
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10/16/2003
00:30:08
|  RE: Rotten egg smell: 2000 4.7
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You probably bell a head gasket. The smell your getting is coolent entering the cylinders.
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01Motorsport
Dodge Dakota
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10/16/2003
09:00:12
| RE: Rotten egg smell: 2000 4.7
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How old are your spark plugs? An engine out of tune will make the catalytic converter smell like rotten eggs. Find the source of the problem before you ruin the converter. A bottle of injector cleaner in the tank may help.
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Ian
Dodge Dakota
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10/16/2003
11:23:37
| RE: Rotten egg smell: 2000 4.7
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I replaced the plugs 1000 miles ago (approx.) at the appropriate service interval. The factory Champions were badly worn and maybe a touch dark (running rich). I replaced them with NGK Platinums. The problem was there before and after the plug swap with no changes. I pulled a couple of the plugs the other day because the dealer said that I had probably bought the wrong heat range. (I figured he was full of s***, one has to be a long way out AND usually the vehicle runs poorly to boot). The plugs are running much cleaner than the Champions. A very light tan colour.
I am not the original owner of the vehicle. It was traded to the Dodge dealer I bought it from. I believe the problem was happening even then, which is a year ago. This leads me to the conclusion that the cat may have suffered damage, but not enough for the PCM to pick up on it yet.
To Cris: re coolant - Burning coolant smells sweet and is usually seen in the exhaust as white 'smoke' even after the pipes heat up. Also one runs low on coolant, which my truck never has.
-Ian
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DakStPete
Dodge Dakota
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10/18/2003
23:24:09
|  RE: Rotten egg smell: 2000 4.7
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I've always heard that a bad catalytic converter smelled like rotten eggs...just my pennies worth.
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DAKX01
Dodge Dakota
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10/19/2003
17:14:00
| RE: Rotten egg smell: 2000 4.7
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Message:
DakStPete is exactly right. It is your catalytic converter. The reason is it smelling is because you are burning your cat. Stop flooring it everywhere. The reason i know this is... my bro has a 1993 5.2 and his cat was burnt bad cause he floored it all the time... he went and installed another one, and the smell went away... go to an exhast place and ask them to check ur cat.
Paul...
P.S.- if thats not it, i have no idea what it could be.
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bigl22
Dodge Dakota
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10/20/2003
08:38:14
| RE: Rotten egg smell: 2000 4.7
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the catylitic converter has collpased internally -- get a new one afer getting that tested -- also check on a vacuum leak to see if it was running lean and that overheated the cat -- the cat will have a long term warrenty as far as the part goes
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Ian
Dodge Dakota
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10/20/2003
11:34:03
| RE: Rotten egg smell: 2000 4.7
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OK, here's the deal: How do I get my dealer to replace any of this stuff under warranty? He's seen the vehicle 3 times recently and claims there is nothing wrong!
Personally I'd like him to replace the front O2 sensor, the TPS and the cat. But until it starts throwing codes I doubt he will do anything.
Suggestions?
Thx,
Ian
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Kowalski
Dodge Dakota
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10/20/2003
16:15:34
| RE: Rotten egg smell: 2000 4.7
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Try another dealer if you can. That smell is typically related to pollution controls. I don't think there is any reason for someone to tell you you got the death flash without knowing the flash code.
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Ian
Dodge Dakota
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10/20/2003
17:48:38
| RE: Rotten egg smell: 2000 4.7
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Dealer PCM modifications:
TSB 18-001-00 (I think this is a typo of 18-001-01)
P/N 08194496 4.7l engine performance enhancements
Re: another dealer.
I'd love to...but...it is a least 1hr 15 minutes away. I'd have to drop it off one week and pick it up the next. I'd really rather not have it sitting on the lot waiting to be broken in to. I may end up having to do this, because I doubt going into my local dealing and throwing a fit will do much good. If anyone has any tips about how to encourage my local dealer to see things my way I'd like to hear them.
Thx, Ian
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Lance
Dodge Dakota
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10/20/2003
18:01:34
| RE: Rotten egg smell: 2000 4.7
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Just take out the Cat they sucks as long as you arnt in cali you shouldn't have any problem
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blackrtaz
Dodge Dakota
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10/20/2003
19:20:38
| RE: Rotten egg smell: 2000 4.7
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Message:
talk about REDNECK! just cut off yur whole dang der muffler an leavher let be...as long as yur aint in dat der cal-I-forn-I-a o'er der yonder...
good fer 10 da 15 dang der horsies...WHOOOPIEEE!
ps...fer some REAL dang der power stickon one er dese edlebrock perfomance stickours and yer be faster dan dat der blue prized hog o' mine...
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Woodrow
Dodge Dakota
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10/20/2003
23:10:03
| RE: Rotten egg smell: 2000 4.7
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Climb under it and bang on it with a block of wood if it rattles then it is bad.You then need to replace not only the cat but the muffler also.Have an exhaust shop look at it and let them determine that it is bad if it is then get it in writing from them and take it to the dealer.At this point if the dealer still won't replace it then write a nasty letter to dodge and explain to them the problems you are having with the dealer.If dodge does nothing then buy an after market cat and replace it.Summit racing has them for about 80 bucks.
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DakUSA
DakotaEnthusiast
10/21/2003
09:41:26
| RE: Rotten egg smell: 2000 4.7
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I have the same smell in mine. and my Gas milage has gone to hell. I got 6mpg towing my camper this weekend all highway. so next week off with the stock cats and on with the GS motorsports True duals
Chris Lambert
Dakota USA
01 Graphite QC -- 4.7 Auto, MBRP Dual Exhaust Custom bent on 45s,
Bed Rug, Bed Rails, CF Euro Tails, Clear Fronts, Leer 100XQ, Custon Leather seats, NR Auto gauges, Kenwood CD, 350 amp, JL 10" sub in console, DVD player
18X9 ALT at200s, GTS style hood, SS front
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Rob454
Dodge Dakota
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10/21/2003
11:58:44
| RE: Rotten egg smell: 2000 4.7
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I agree that most likely the cats are going bad. The cats are under the emmissions warranty ( 80 000 miles). I would go find another dealer. If you are in California a small threat of calling the CARB will get their a$$in gear. there is no reason for them not to fix it because its a warrnaty item so the Dodge corp. is paying for it not the dealer. speak to the service manager. or general manager.
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