got annihilated by smog today. also, timing issues.
#1
Registered User
Thread Starter
Join Date: Mar 2008
Location: Santa Barbara, CA
Posts: 63
Likes: 0
Received 0 Likes
on
0 Posts
got annihilated by smog today. also, timing issues.
took my 22re in for a smog today. first of all, my timing was reading at 28 BTDC. the technician postulated that my harmonic balancer is messed up. ideas?
here are my smog results:
IDLE
%CO2: 9.4, %O2: 4.1, HC: 976, CO: 4.95
2500 RPM
%CO2: 11.0, %02: .7, HC: 409, CO: 5.62
These results would have me labeled as a gross polluter, luckily, he ran me as a pre-test inspection, so i have some more times to try.
I recently changed: the oil, oil filter, spark plugs, spark plug wires, rotor, cap, air filter, PCV valve.
Immediately i think that my Catalytic converter is clogged or just old. Also, i wonder how my 02 sensor is doing. any other ideas or suggestions? i'm concerned about my timing too.
kenny
here are my smog results:
IDLE
%CO2: 9.4, %O2: 4.1, HC: 976, CO: 4.95
2500 RPM
%CO2: 11.0, %02: .7, HC: 409, CO: 5.62
These results would have me labeled as a gross polluter, luckily, he ran me as a pre-test inspection, so i have some more times to try.
I recently changed: the oil, oil filter, spark plugs, spark plug wires, rotor, cap, air filter, PCV valve.
Immediately i think that my Catalytic converter is clogged or just old. Also, i wonder how my 02 sensor is doing. any other ideas or suggestions? i'm concerned about my timing too.
kenny
#4
Registered User
Join Date: Mar 2008
Location: BC canada
Posts: 50
Likes: 0
Received 0 Likes
on
0 Posts
do you have a heat gun?
the exhuast leaving the cat should be hotter then the gas entering it. That is one way to test the cat. To test the o2 you need a multi meter. hook up the + lead to the signal waire on the o2 and the - to a ground or chassis. turn multi meter on and to the volt setting. when the truck is warm the o2 should fluctuate between 0.1 to 0.9. it should flutuate fast, like 1-3 times a second.
the exhuast leaving the cat should be hotter then the gas entering it. That is one way to test the cat. To test the o2 you need a multi meter. hook up the + lead to the signal waire on the o2 and the - to a ground or chassis. turn multi meter on and to the volt setting. when the truck is warm the o2 should fluctuate between 0.1 to 0.9. it should flutuate fast, like 1-3 times a second.
#6
Registered User
Join Date: Mar 2008
Location: Temecula Valley, CA
Posts: 12,723
Likes: 0
Received 4 Likes
on
4 Posts
28 deg at idle doesn't sound that far off... if the ECU was not put into test mode that is or the ECU is not getting the IDL signal from the throttle position sensor. You didn't post the NOx reading so it's hard to say if the EGR is working properly and the timing is within reason.
Since it looks like your HC was high at idle definitely make sure your TPS is adjusted properly. If I remember correctly, the O2 sensor is not used when at idle. Also check the PCV valve and vacuum lines for leaks.
Also, where are you at and what are the pass/fail limits?
Since it looks like your HC was high at idle definitely make sure your TPS is adjusted properly. If I remember correctly, the O2 sensor is not used when at idle. Also check the PCV valve and vacuum lines for leaks.
Also, where are you at and what are the pass/fail limits?
Trending Topics
#8
Registered User
Thread Starter
Join Date: Mar 2008
Location: Santa Barbara, CA
Posts: 63
Likes: 0
Received 0 Likes
on
0 Posts
im in southern california, santa barbara to be exact. my EGR was tested both visually and functionally and it passed both. and im pretty sure that the truck was in test mode for the timing, so that is still strange.
i replaced the PCV valve.
i replaced the PCV valve.
#9
Registered User
Join Date: Mar 2008
Location: Temecula Valley, CA
Posts: 12,723
Likes: 0
Received 4 Likes
on
4 Posts
For the record, if the throttle position sensor does not correctly signal 'idle' to the ECU, putting it into test mode will not affect the timing. You'll still get the check engine light and all that, but the ECU will not turn off it's own timing maps.
If you've got a high-impedance DVM or a continuity tester, you can verify the TPS is in fact registering idle by checking for continuity between the bottom two terminals on the sensor when the throttle is closed. If you don't have continuity between those two terminals, you can loosen the two screws on the TPS and carefully rotate the top of the sensor towards the front of the truck until you do have continuity. But you'll want it to be where you 'just' get continuity, not turn it so far that you have to open the throttle 1/4 inch before continuity is broken- it should just be a slight opening that breaks the signal. There are more technical details about it here: http://www.4crawler.com/4x4/CheapTri...#TPSAdjustment
If you've got a high-impedance DVM or a continuity tester, you can verify the TPS is in fact registering idle by checking for continuity between the bottom two terminals on the sensor when the throttle is closed. If you don't have continuity between those two terminals, you can loosen the two screws on the TPS and carefully rotate the top of the sensor towards the front of the truck until you do have continuity. But you'll want it to be where you 'just' get continuity, not turn it so far that you have to open the throttle 1/4 inch before continuity is broken- it should just be a slight opening that breaks the signal. There are more technical details about it here: http://www.4crawler.com/4x4/CheapTri...#TPSAdjustment
#10
Registered User
Thread Starter
Join Date: Mar 2008
Location: Santa Barbara, CA
Posts: 63
Likes: 0
Received 0 Likes
on
0 Posts
UPDATE:
so i installed a new O2 sensor and then i went to work on my timing issues. but before that, i gave it some throttle body cleaner. so i hooked up my timing light, and shorted the TE1 and E1 sensors with a paper clip. my timing read 5*. i then took out the clip and my timing was at 12*. could i have fixed the problem just by spraying throttle body cleaner or was the smog technician just an idiot.
so i installed a new O2 sensor and then i went to work on my timing issues. but before that, i gave it some throttle body cleaner. so i hooked up my timing light, and shorted the TE1 and E1 sensors with a paper clip. my timing read 5*. i then took out the clip and my timing was at 12*. could i have fixed the problem just by spraying throttle body cleaner or was the smog technician just an idiot.
#11
Registered User
Thread Starter
Join Date: Mar 2008
Location: Santa Barbara, CA
Posts: 63
Likes: 0
Received 0 Likes
on
0 Posts
also, if i do need a new catalytic converter, am i going to have to do some welding, because it looks like it just unbolts. and i just realized that i have two o2 sensors. is that normal?
Last edited by skinnyhb; 04-10-2008 at 03:12 PM.
#12
Registered User
Get a Denso O2 sensor from sparkplugs.com. It's a genuine Toyota part but cost a fraction of what the dealer would charge.
Thread
Thread Starter
Forum
Replies
Last Post
GreatLakesGuy
The Classifieds GraveYard
8
09-04-2015 09:27 AM