Guys help please... I dunno what to do anymore, I replaced my IACV, my TPS as well but my idle is still at 4000 rpms.

i have been watching a lot videos about how to read a monitor and you just explained everything in simple and easy way. Thanks a lot mahn

What if my downstream o2 sensor is at 1.275V and not moving, closed circuit ofc.

Hey I have the same exact scan device how do I get too that page

Bank 1 sensor 1 rich p2196 Nank 2 sensor 1 Lean p2197 Bank 2 sensor 1 rich p2198

Hello I have a 2008 mustang have lean and reach condition at same time. New catalitycs new oxigen sensor but my upstream sensor don’t fluctuate always on 900 mv. New spark plugs new cables. help thank you.

What about the actual values of the rear O2 sensors. My 2004 Corvette is running lean, and the rears (while still relatively consistent) will hold at .130, then .5, then .7.... Roughly a minute or so at each stage

I have question if I’m reading rich condition are that mean that my car is running lean since computer getting info to reduce fuel ? It’s kinda confusing for me. Thank you.

Thank you. Trying to fix a sluggish start from stop situtation.

Toy Ridges

stoichiometric. . . A word I learned since messing with my o2 sensors

Miller Amy Lee Christopher Jones Jeffrey

Hi. What if O2 sensor stuck 1652 Fahrenheit? How I can diagnose that ?

simple, i like it. that throttle body valve is super dirty lol

excellent! Important to consider the best cleaning methods..... and the main causes for lean and rich conditions. I just chased down several AIR leaks: intake and exhaust. One of the exhaust donut gaskets at the exhaust manifold had completely crumbled when I dismantled the connection, for example. SMOKE MACHINE is a simple and powerful tool everyone must have!

Ive a question. How can we tell if its the 02 sensors or the catalytic converter. Would we be looking for something different?

Pfannerstill Cliffs

Thompson Thomas Gonzalez Ruth Lopez Lisa

Ernestina Camp

White Betty Anderson Matthew Martinez Lisa

Hello, question. My bank 1 sensor 1 stays constant at 2.3 V? Is the sensor bad? Fuel injectors are fully functional, maf sensor works. I have the turbo pressure sensor codes on my scanner also

To diag a MAF all you need to do is monitor the MAF data stream on a scam tool. An engine will draw in a certain amount of air per engine size. To diag look at the data stream for the MAF sensor with the engine at idle. Data is read in grams per second. A 3.0 liter engine MAF sensor should report at least 3.0 grams per second at idle. If the reading is higher than 3.0 grams per second your MAF sensor is fine. If it's below the spec inspect your engines Intake system for leaks. Look at the air filter condition. Inspect for exhaust leaks ahead of the first O2 sensor. If all is well no leaks and the sensor still reads below 1 gram per second for each liter of engine size, remove the sensor and inspect for dirt or contamination on the hot wire in the sensor. Clean it with MAF sensor spray cleaner and retest. If the readings are still below normal recheck your previous work for vacuum and exhaust leaks and if all is well replaced the sensor I have fixed many many other techs comebacks after they replaced a MAF sensor but didn't verify engine integrity. Usually it's a vacuum leaks in the intake stream or an exhaust leak at the manifold doughnut gaskets. Retired after 40 years as a GM tech. It amazes me how many people don't bother to read or understand the proper diagnosis in auto repair.

Great work thanks indeed

Arlie Glen

Well done. Much better than any others I've found. Thanks from Canada 'eh' 😂

best video

i’m chasing a high idle at 1k in my 95 f150 5.0. Unplugging the iacv drops the idle to normal 650-800

I too, got a P0340 code (intake camshaft position sensor circuit) after changing my ICM on my 2.2L Ecotec. The ICM that I bought was a cheap Chinese knock-off ($28). It may not have the Ion Sensing Technology mentioned in the video. I don't have a camshaft position sensor on the side of my engine.

is this at idle??

Is this still relevant if the front O2 is a wideband/linear sensor?

Good explanation - Thanks!!

Cool You're a great teacher. Thank you. My dad was a machinist for John Deere's for 31 years

How do you know its not a vacuum leak? Is it possible that the MAF is dirty?

U shut it off to quick

I have the same scanner, how did you get yours to show % mines show in decimal

Except that's not the continuity setting. Continuity is the sound or wifi looking sign. You set into ohms, the same sign thats on the red lead. kzbin.infodqCIx06oeNg?si=y5QnmYxGX4-QShHR

Thanks for the info man, diagnosing mine for sudden loss of power after a while of driving. Mine is the inline 6 engine, so only 1 o2 before and 1 o2 after. I thought it couldve been the cat, but the charts look like your top 2 o2 readings. They look perfect. Thanks for this info again

50x pulses im 10ms? Doesnt sound right or the china tester box is mislabeled etc One pulse is anywhere from 2-20millseconds long i.e how long injector is open and spraying. 10 milliseconds x 50 = 500 millseconds which is half a second and your test was 4-10seconds long. And listening to the audio sounds more like 20-50 pulses. The typical injector pulse width for an idling engine at normal operating temperature is between 2.5 and 3.5 ms. typical pulse width is 2 to 4 milliseconds at idle and as high as 15 to 18 milliseconds at wide-open throttle. But maybe the tester is telling you open time on injector of 10ms but not time between pulses so could be 250 milliseconds in-between puleses tgat last 10ms long

Can the reading be done on a standalone o-scope?

Just watched this video in the cab of a truck I’m diagnosing 😂 you’re a saint man thanks for the clear cut straight to the point Info

Ford Cologne 2.8l engine for reference. There are 4 cam bearings of 4 different diameters. The outside bearings are larger than the 2 inner bearings. To remove them you have to place your cam tool all the way through the engine until it contacts an outer bearing. Press that one out. Then move back into the engine to the inner bearing. Tighten your tool and press that one out. The inner bearing is smaller than the outside and it will pass through easily. Then remove your cam tool and flip it around through the other side of the engine to remove the other outside bearing. Press it out then back the tool up to the last remaining inner cam bearing. Press it out and again, it will pass through the outer opening easily.

Awesome! Could you show how to test a MAP sensor as well?

Could you explain how to know if the o2 sensor is bad? Great video thanks!

Can you to tell me how to test the connector to the IAT sensor? I have high input. I am wondering if I just need to change the connector/wires.

Hrrmmm - shouldn't you be supported the ends and measuring the middle?

It's great that these can be measured from driver seat

there are some spikes inbetween the E1 & E4 marked area what are these( when sensor was installed in frame). Thakyou for uploading

Thank you - trying to work out why my aftermarket instruments work for all my OEM readings except the ECT - ( it just reads 0) looks like I need to Incorporate an adjustable resistor for the oem temp sensor to be recognized by the aftermarket dash - its a Honda st1100 motorcycle restoration/custom project

Awesome. You do a great job at walking through the process. Where can I score one of those electro trainers?

Great video !!!