emissions FAIL

[wilmas4life]

hey everyone.. I have a problem... I took my truck into a smog test shop and it failed due to the MIL/check engine light:supergay:. It passed all other tests just fine. I am not sure what the cause of it is...but the guy at the shop said drive it for about 100 miles and come back...i have read on google that people have had the same problem but sometimes driving the 100 or so miles hardly ever fixed the problem. i havent found a answer to a fix..I know my Check Engine Light(in the dash) does not light up at all when i turn the key or anything. but i ran a code scanner and the scanner says that the light is not on(i.e. No codes or reasons for the light to be on) ...So basicly what im asking is do i need to drive the thing for a 100 miles or so? or do i need to replace the bulb for it to pass? Thx for any advice/help from everyone


Would a Moderater please move this to the Gen discussion section.. Sorry for posting in the wrong section

[bowtiefreak]

Wait, they failed it for the light....yet there is no light or code?

[SunlitComet]

If your bulb does not light up at start up for a moment then your bulb or bulb circuit is at fault. You can be failed if the test cannot verify a properly functioning light. Check your gauge and igntion fuses any way but your lamp may be broken. It may have been listed on your report as on becuase in did not have an preset entry for bulb failure.

---------- Post added at 09:53 AM ---------- Previous post was at 09:52 AM ----------

Driving doesn't fix it.

[grimm]

Yeah. California is strict with that crap, and a smog pro can lose his license for passing car with a CEL/SES light that doesn't work regardless of how well every other test went, even if you're not throwing a code.

In August, went to smog my RX-7, and failed because the bulb did not light up during the bulb test prior to starting the car. Dude let me borrow his tools, took a working bulb from the "Buckle Your Seatbelt" light circuit, swapped it in, it lit up before ignition, started the car, it went off as it was suppposed and it passed.

[wilmas4life]

Thx for the info guys!!

[wilmas4life]

well i found a place that will replace the bulb for $50. first place i went to wanted $130
and 3 hours...i damn near pissed myself laughing at him. and moved on...second guy said about an hour.

[SunlitComet]

could have done it yourself for $2

[wilmas4life]

it hasnt been done yet.. I am just scared of breaking a clip or cracking my dash. i figure if he breaks it i can make him replace it :)..i would try it but just cant find anything that shows me in enough detail for me to feel comfortable doing it..and thats just the dash.. if i was to try it what bulb would i use? get a new one? upgraded to LED? (if possible because i have a red LED set coming in). or like Grim said take the bulb from the seat belt light? i want to try and get this done today b4 work so i can smog and all that shyt. any further adivice is appreciated

[SunlitComet]

Your model may have one of the following bulb numbers:161-194-74-195 typically. they switched bulbs mid year so take it out and match it up.



http://www.sunlitcomet.com/pdf/automotive/tahoe/98-99/1999-Chevy-Tahoe-Instrument-Panel-Cluster-Replacement.pdf

[wilmas4life]

thx bud. Ill be trying this when i wake up

[Hart]

i would try it but just cant find anything that shows me in enough detail for me to feel comfortable doing it..and thats just the dash.

This (http://www.tahoeyukonforum.com/forum/showpost.php?p=140975&postcount=1) might help with cracking the dash open.
As for bulb type.. try this (http://www.tahoeyukonforum.com/forum/showpost.php?p=21719&postcount=1)?

[wilmas4life]

ok well i got the light replaced.. took it back and the guy tells me i have 3 out of 9 monitors not ready.... 1 is the ecg vavle...the other 2 i forgot atm and dont feel like looking for the paper work. would anyone be able to tell me a drive cycle to get my monitors all set to ready? OR if you know a shop in so cal that will pass me HOLA

[SunlitComet]

Thorough little bastards aren't they?

use these: