Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

[MYYellowTY]

Yes, I know it sucks to live in CA with the Emissions Crap but you gotta play by their rules. So yesterday I put all the stock equipment back on and stock chip, egr, injectors, etc.... and I passed all but one test.Need some ideas on what to look at.

------------------------ %CO2-----%O2------HC(PPM)-----------CO(%)---

Test--------RPM-------Meas------Max------Max----Meas-----Max----Meas
Idle----------746-------14.8-------0.0-------120---*(833)*-----1.00----0.36
2500RPM-2521------15.0-------0.0-------180------35--------1.00----0.02

Only thing was Idle HC was way high.If it was a cap& rotor or wires or plugs it would affect the 2500rpm test also, right?I think a stock injector was not closing all the way so I took them out a while back.1 Cylinder was low on compression and fuel soaked.Since changing them comp. has come up and no fuel on plug.So it seems pretty obvious to me but you never know.Im gonna track it down and put a 38# in its place to retest but if thats NOT it what would cause this? Its all stock now except AFPR and MSD ign and coil.What could cause it to be soooooo rich at low RPM but not high????? Thanks as ALWAYS for the Help!!!!! :tup:

 

[gkrcr882]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

Did you drive straight to the test station or around a little to heat the cat up? Is your PCV system hooked up and working properly as well? The MSD wouldn't affect emissions, if anything it will help it pass by ensuring a complete burn. I'm still leaning toward a cold cat, especially if they do the idle test, then the 2500. The correct way is to start at the highest speed, then do idle last. If you have to sit in line for a test, periodically bring the rpms up to 1000 or 1500 for a little bit to keep the catalyst hot. Make sure the fuel pressure is dialed down to stock levels as well. The CO levels are right in line with the HC, since CO is partially burned fuel.

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

Now you mention it Im thinking I didnt run it long enough to heat the cat all the way up.But would that make that large of a difference or is it possibly the injector and cold cat?The PCV system is ok and FP is back down.Im 95% sure a injector was bad so gonna check that out but if not ill just put 30-40 miles on it right before the next test.

 

[It's just a six]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

Tell them to "light off the cat"
They hold the engine RPM to 2500 for 5 minutes IIRC,, that will cause the cat to get hot & "light off the cat"
I passed @ the 2500 mark & failed @ idle,, I changed cap ,rotor, & plugs, passed easy.

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

Thanks Dave, Unfortunately he put it thru and the max HC is 120 and Gross Polluter is 270- and I hit 883. It says gross polluter on the fail sheet.So now im stereotyped!!!! I put anew cap & rotor in it which was carboned but not super bad.I was gonna change it but call me lazy!!!! Plus I think I found the bad injectorand put a 38# just for the test. So ill see tomorrow if I pass. Any other ideas if it fails? If so im gonna change to all 38#s and lower the FP to try , till I can get the stock inj. cleaned and tested.Anyone know a good place to do it?(Mr injector.com) Well Ill be praying tonight!!! Thanks all for the help!!

 

[It's just a six]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

Pull the tan & blue stripe wire & the passenger side floor board & cover up your check engine light w/a business card.
Just a thought.

 

[SkyeTy]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

do you have a 160 degree thermostat? because after i put one in mine it still can cause high hc's at idle. the cat appears to be operating correctly. if you are that rich you don't have to worry about the heat in the cat, it will be plenty hot. with hg's that high i think it would be to cold of cylinder temps or possible egr stuck partially open

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

Thanks guys for the input, I havent gone yet but have a few other things to check now.I do have a 160 t-stat in it so I might put a 180 in it And I had to put the egr back on so i checked it with a vaccum pump at 7# or so and it held so theres no hole but I did notice the shaft on the diaphram was rusty.I pt some oil on it ad worked it in and out a bt which helped but I have noticed that when cold it doesnt want to stay running unless I 2 foot it.Which does sound like egr open.So im gona check it out now. And ill try to hook up DM and check it out also.Might hold off till tomorrow now since have a few days.Thanks again ALL!!!!! :tup:

 

[gkrcr882]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

EGR is mostly NOx emissions, it shouldn't be open unless you're under cruising conditions. A 160* T-stat would increase HC and CO.

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! Need Help

Re: Failed the ROOM OF DOOM!!! Need Help

WELL, IT FAILED AGAIN!!!! It went down 744 and was cleaner yet everywhere else on the test. The guy at the station is cool about it.He saw by the AFPR but thinks it migh be to blame and if I take it to the referee it wont pass for sure.So im gonna change it to the stocker(just a PITA) and put the 160* stat in plus unplug the LC-1 and put a stck EGR in and swap with another ECM and Memcal.I thought my lazyness of not doing the cap and rotor plus the injector was it and it was $22 to retest ot $60+ to find the fix at another station.Now my next test is only $11 so ill change these things and try again.I hope the 160* is it, and shuld I put a 180 or 195* to burn cleanest? And any other ideas???????

I ran DM but only showed IPW which was 1.40-1.50. I could only check the counts on the 128 and adjusted till it climbed the most and left it.FP was at 41 so im puzzled on this thing if it fails again!!! Thanks Again ALL for the ideas and help!!!! :lol:

Gotta love CALI smog!!! :roll: :roll:

 

[4C FED]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

A stock thermostat is 195 deg. I believe.
Did you disconnect the IC pump prior to testing?

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

Cool Thanks!! Bought Robert Shaw Stats when bought truck in all three temps so ill put the 195 in.Didnt know to disconnect the IC Pump before test?? Just the 12v ign jumper or on the pump itself?? What for,higher tempatures???

Also my parents house is a 1/8 mile from me and my tools are there so I started it today to work on it and was ready to 2 foot it because it barely will stay running but it started and idled beautifully.I guess thats because its in open loop, so would that point to O2 or ecm or something along those lines?It ran great for the whole minute it was running.Is there a chance a setting on the LC-1 could be wrong and throw off the reading back to the ECM?? I have the LC-1 in place of 02 and using its signal for ecm o2 signal. Never messed with the adjustments on it since bought it. So its coming out to be sure. You guys are AWESOME!!! Id be lost without YA!!!!! :tup:

 

[fivetodrive]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

To disconnect the intercooler pump just pull the fuse behind the alternator.

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

Yeah but why?Is it standard to do on these when smogging?Is it to heat the engine up more? Just curious, but consider it pulled!!!! Thanks Again!!!

 

[gkrcr882]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

if the IC isnt "on" it cant lower intake temps, therefore the intake manifold stays warm and the fuel can vaporize much easier and more completely.

 

[It's just a six]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

Does the smog guy check your timeing everytime & check for codes?

If not,,,, unplug the brown wire w/blue stripe & the passenger side floorboard, it will pass. :tup:
If not, you have some problems...

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

Well the 2 times ive been there was a different tester, but both were really cool.The second time the guy ran it twice becausde after the 2500 test he let off andit stumbled at idle so the second time he slowly backed it down and kept it near the 1000 mark to burn cleaner as long as possible. The only other thing I can think of now is the module in the dist.. Since you said timing, would that do it?I have a msd module in my Astro 4.3 CMPI and it passes so I dont think it would.

As for the CEL, He did check inside for it but he also9 winked and hinted about hiding a vacuum leak might do it.So I think ill try tomorrow like this and see and if it fails Ill ask if I can "Do Something real quick" and pull it.If it dont pass then, what would cause it??? Intake leak,rings,turbo shot(boosts NP),TB?????

The WORST 4 Letter word I can think off now is S--M--O--G!!!!!!!!

 

[Deanzsyclone]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

yup sucks here in cali, but I think other states are on their way to our type of rules soon.

 

[MYYellowTY]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

OK, IM OFICIALLYCONFUSED!!!!!! I did all the swaps and its weird.The BPW at idle in park is 1.5-1.6 and in drive goes to 2.1.If I pull the timing wire it goes to 2.1 in park.It shows 23* timing at idle in park. Yesterday the BLM was at 128 all around, now at idle is Rich at 105 till 2k rpm. The truck shakes and chugs from idle to 2k then purrs.And if I turn on the ac in park it dies. IT NEVER DID THIS WITH THE PERFORMANCE STUFF ON IT!!! WHY?????What would cause it to run SOOOO rich at idle??? Plugs are Iridiums with 8k on them new cap rotor, wires have 8k. Could the msd ign. module affect the timing that much????I need some ideas and explaining because im going nuts!!!!

Im on Disability or I would take it to a shop but I really cant!!!IM LOST!!!!!!

 

[It's just a six]

Re: Failed the ROOM OF DOOM!!! AGAIN!!! Need More Help

Does the smog guy check your timeing everytime & check for codes?

If not,,,, unplug the brown wire w/blue stripe on the passenger side floorboard, it will pass. :tup:
If not, you have some problems...

Does the smog guy check your timeing everytime & check for codes?If not,,,, unplug the brown wire w/blue stripe on the passenger side floorboard, it will pass. :tup:

Yes ,,retarding the timeing will most likely make it pass, that is what happens when you unplug the brown wire, it retards the timeing.
PS, do not run your engine hard w/the brown wire unplugged, it will super heat your combustion chambers, valves exhaust etc & will most likely cause detonation also.

hold the engine RPM to 2500 for 5 minutes IIRC,, that will cause the cat to get hot & "light off the cat"
Did they do that also???????