Failed SMOG Check. HELP

Bassinfool · 09-27-2006, 01:23 PM

OK, I failed SMOG Check today (that crap is the devil!). The only thing that failed is that my idle was too high (950, should be 800), so they couldn't check my timing. Any ideas? I recently put a new (used, but tested OK) TPS on it, and I THINK I have it adjusted correctly. If not, would that cause the high idle? Would this be an easy fix, or should I take it in to someone who knows what the heck they're doing? Thanks guys!

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kmcc78240 · 09-27-2006, 01:45 PM

I think mine idles at 900-950 with AC on? Is 800 what the state says it has to idle at?
Sorry I can't help good luck.

Yota82 · 09-27-2006, 02:22 PM

I think your SMOG guy is blowing smoke the last I heard it couldn't idle above 1100 RPM. I have my idle set at 1000 and I have never had a problem, even at a Test Only. Lover the idle and take it back for a free re-test.

Bassinfool · 09-27-2006, 02:56 PM

That's my question, what is the best way to lower the idle? AFM screw? Thanks, again!

Crymson · 09-27-2006, 03:19 PM

There is a screw on the throttle body facing the front of the vehicle which will adjust idle speed.

4Crawler · 09-27-2006, 03:26 PM

Set the TPS correctly: http://www.4crawler.com/4x4/CheapTri...#TPSAdjustment

Then set the base timing (w/ test jumper installed) and set the idle speed to the proper value (using the large air bypass screw on the throttle body).

rdharper · 09-27-2006, 04:47 PM

Quote:

Originally Posted by Bassinfool

OK, I failed SMOG Check today (that crap is the devil!). The only thing that failed is that my idle was too high (950, should be 800), so they couldn't check my timing. Any ideas? I recently put a new (used, but tested OK) TPS on it, and I THINK I have it adjusted correctly. If not, would that cause the high idle? Would this be an easy fix, or should I take it in to someone who knows what the heck they're doing? Thanks guys!

If the performance is otherwise fine, or better than before, it is entirely possible that the TPS replacement is responsible, and is now correct.

As a previous guy said, lower the the idle with the TB screw adjust, clockwise if I recall correctly.

4x4spaz · 09-27-2006, 04:52 PM

Just got mine checked. I don't know about you guys, but in Idaho the idle speed is set at 775 rpm +/- 425.

Bob_98SR5 · 09-27-2006, 05:38 PM

http://www.yotatech.com/showthread.p...adjusting+idle

see roger's post #5

bob

Bassinfool · 09-29-2006, 01:37 PM

Thanks, guys! I rechecked the TPS last night & lowered the idle per your posts & passed smog this morning. Thanks so much!

09-27-2006, 02:56 PM	#4 (permalink)
Bassinfool Contributing Member Join Date: Jan 2005 Location: Citrus Heights, CA Posts: 695	That's my question, what is the best way to lower the idle? AFM screw? Thanks, again! __________________ '07 Tacoma Double Cab V6 4WD

09-27-2006, 03:26 PM	#6 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 7,832	Set the TPS correctly: http://www.4crawler.com/4x4/CheapTri...#TPSAdjustment Then set the base timing (w/ test jumper installed) and set the idle speed to the proper value (using the large air bypass screw on the throttle body). __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs or 35x12.50 MTRs r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

09-27-2006, 04:52 PM	#8 (permalink)
4x4spaz Contributing Member Join Date: Jul 2006 Location: Beale AFB, CA Posts: 125	Just got mine checked. I don't know about you guys, but in Idaho the idle speed is set at 775 rpm +/- 425. __________________ '83 Toyota 4x4 '79 Chevy Luv '68 VW Baja Bug

09-29-2006, 01:37 PM	#10 (permalink)
Bassinfool Contributing Member Join Date: Jan 2005 Location: Citrus Heights, CA Posts: 695	Thanks, guys! I rechecked the TPS last night & lowered the idle per your posts & passed smog this morning. Thanks so much! __________________ '07 Tacoma Double Cab V6 4WD

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09-27-2006, 02:22 PM	#3 (permalink)
Yota82 Registered User Join Date: Sep 2006 Location: Sacramento, CA. Posts: 365	I think your SMOG guy is blowing smoke the last I heard it couldn't idle above 1100 RPM. I have my idle set at 1000 and I have never had a problem, even at a Test Only. Lover the idle and take it back for a free re-test.

09-27-2006, 03:19 PM	#5 (permalink)
Crymson Registered User Join Date: Oct 2005 Posts: 106	There is a screw on the throttle body facing the front of the vehicle which will adjust idle speed.

09-27-2006, 05:38 PM	#9 (permalink)
Bob_98SR5 Contributing Member Join Date: May 2002 Location: Los Angeles Posts: 10,092	http://www.yotatech.com/showthread.p...adjusting+idle see roger's post #5 bob

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