Does anyone have any published emissions specs from the factory on
this truck? Does anyone know how low they have blown on emission
tests? It's again a 5.2l 1999 US emissions.
Thanks Again!
On Sat, Jul 19, 2008 at 2:34 PM, Mike Guzinski <mguzinski@gmail.com> wrote:
> It seems that everything else on the truck has been checked and double
> checked. The cat does not rattle and isn't rusted any worse than the
> rest of the exhaust. Not even any dents. I don't think I have seen a
> bad cat without it falling apart. I can't remember who told me but I
> thought I was told that if the screen was in tact and not plugged it
> works. Do they just wear out? I know Dodge had some recalls on cats
> for other Daks and Rams of this era. Bernd, you do seem to be the
> foremost expert in this area. Think I'll look for a new cat. I mean
> everything I have done has had little or no effect. Thanks!
>
> On Sat, Jul 19, 2008 at 2:13 PM, Bernd D. Ratsch <bernd@dodgetrucks.org> wrote:
>>
>> Yes, it can be a bad cat. Cat's convert HC, CO, and NOx into CO2 and H2O.
>> However, I'd be calling the repair bureau and find out what they can do
>> since even in stock configuration, it can't pass.
>>
>> - Bernd
>>
>> ----- Original Message -----
>> From: "Mike Guzinski" <mguzinski@gmail.com>
>> To: <dakota-truck@dakota-truck.net>
>> Sent: Saturday, July 19, 2008 12:20 PM
>> Subject: DML: Failed Colorado Emissions High NOx A little long....
>>
>>
>>>
>>> Hey all,
>>> It's been a while since I have done much on the list but now it seems
>>> I am (or Air Care Colorado is) having a problem with my 99 Dakota. I
>>> have a 5.2 L 4x4 with a K&N FIPK Mopar Performance PCM MSD wires,
>>> brass cap and roter, Viper electric fan, 180 deg stat. I don't put
>>> too many miles on this a year, My daily driver is an 06 Magnum R/T.
>>> Here are my results in the 3 yes 3 tests I failed!
>>>
>>> The first test I had the oil changed and cleaned the K&N and put in a
>>> quart of denatured alcohol in the tank with 4 gallons of gas. I ran
>>> it up to temp for about 45 minutes.
>>>
>>> Reading Limit
>>> HC GPM 0.6615 1.2 Pass
>>> CO GPM 8.5833 15.00 Pass
>>> CO2GPM 520.8941
>>> NOx GPM 2.7288 2.0 Fail
>>>
>>> The second test I installed new factory spec NGK plugs gapped to .045.
>>> I put in a bottle of B&G 44k then I ran the tank of gas down to about
>>> half a gallon and refilled it with 10 gallons of premium 91 octain.
>>>
>>> HC GPM 0.8090 1.2 Pass
>>> CO GPM 6.6932 15.0 Pass
>>> CO2GPM 519.0306
>>> NOx GMP 2.6831 2.0 Fail
>>>
>>> The third time I took out the 180 stat and put in a new 195. I took
>>> out the Mopar Performance PCM and replaced with the factory PCM.
>>> Regapped the plugs to .040 which is factory spec. I followed the
>>> reprogram procedures on the list for the OBDII. I also checked the
>>> cat, it "appears" to be good and I also checked for vac leaks. I
>>> looked for the EGR valve...lol....there isn't one.
>>>
>>> HC GPM 0.9292 1.2 Pass
>>> CO GPM 11.3572 15.0 Pass
>>> CO2GPM 512.0061
>>> NOx GMP 2.9614 2.0 Fail
>>>
>>> I also looked back to see what my truck was at on my older emissions
>>> test from 2004 and 2006 Here is what I got:
>>>
>>> 2004
>>> HC GPM 0.8641 4.0 Pass
>>> CO GPM 12.6890 20.0 Pass
>>> CO2GPM 511.1926
>>> NOx GMP 2.8967 9.0 Pass
>>>
>>> 2006
>>> HC GPM 1.6168 4.0 Pass
>>> CO GPM 17.8321 20.0 Pass
>>> CO2GPM 512.0025
>>> NOx GMP 4.5176 9.0 Pass
>>>
>>> Now they toughened the standards since 2006 and on the new tougher
>>> standards my truck would have never passed. Now it has 158000 miles
>>> on it and it's cleaner than it was when it was only 4 years new. I am
>>> just finding nothing that will change the NOx levels at all. Could it
>>> be the CAT? Wouldn't the other leveles be high if the cat was bad? I
>>> have never had any check engine lights and does not show any codes.
>>> Any suggestions you have would be great.
>>> Thanks,
>>> Mike
>>>
>>>
>>
>>
>>
>>
>
This archive was generated by hypermail 2b29 : Fri Aug 01 2008 - 00:06:48 EDT