Come along with Eric O. at the SMA shop as he looks into this "low power" complaint on this Nissan Frontier Pickup. We also get to bust out the Pico Scope to aid us in our diagnostic and learn how it can tell if the exhaust is plugged.
How to check back pressure: https://www.youtube.com/watch?v=rB8rKwh2twU
A look in the cat: https://www.youtube.com/watch?v=jPlifvgyrVI
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--Eric O.
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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.

48 thoughts on “Nissan frontier – low / no power complaint”
  1. Avataaar/Circle Created with python_avatars Mingeri Garry says:

    Nissan NP200 no current on the coil, injectors., almost every socket on the car. Can you help?

  2. Avataaar/Circle Created with python_avatars ED Harry says:

    Clearly The Cat or Cats are plugged , The Rattle is the guts of one of the cats.

  3. Avataaar/Circle Created with python_avatars Antonio Claudio Michael says:

    Defenitly clogged Cat nice Diag Eric O she just can't breath and pass its gas 😬🤣 @SouthMainAutoRepairLLC

  4. Avataaar/Circle Created with python_avatars Eddie Abraham says:

    That part under the exhaust manifold is NOT the CONVERTER…that is the SPARK ARRESTER…CATALYTIC CONVERTER is further down the exhaust pipe with the 02 sensor

  5. Avataaar/Circle Created with python_avatars klrmoto says:

    My first view of your channel. Thank you so very much for showing me how things are done these days.

  6. Avataaar/Circle Created with python_avatars Scuba Joe says:

    How much is that diagnostic computer. That thing is sweet!!

  7. Avataaar/Circle Created with python_avatars dan Gatto says:

    If you get 440 degrees in front of front cat, and 440 degrees behind front cat; does it need a catylitic.

  8. Avataaar/Circle Created with python_avatars Marvin Naputi says:

    Sacnner

  9. Avataaar/Circle Created with python_avatars Peter Pratley says:

    I just starte4d watchina g your videos recently. I am 75 years old and my very first car was a 1955 Chevy with a 265 V8 which burned oil so In decided to tear the engine apart and relace the rings. I got most of my tools from Sears and parts by mail from J C Whitney catalogs. In 1963 that was the equal to Amazon today for cars and truck parts. I got it done and all reaasmbled but Im ended up with 2 bolts left over. Not a clue where from. The car ran well for a while but then started to burn oil again. So I took everything apart again and found out that I left the 2 bolts off the main bearing cap on the crankahaft. Solved the mystery of the 2 extra bolts. I enjoy watching auto repair videos but the electronics lose me.
    Keep up the good videos Pete

  10. Avataaar/Circle Created with python_avatars Mikeybob W says:

    If my 07 Frontier exhibits the same symptoms can I check the exhaust temps as my baseline. I don't have diagnostic equipment.

  11. Avataaar/Circle Created with python_avatars zfoxfire says:

    Interesting to see what goes into troubleshooting modern cars.

  12. Avataaar/Circle Created with python_avatars Javier A. Cestero says:

    This is exactly what you tube should not allow. Too much talk however; no evident results to prove the truck was properly diagnosed. In my opinion, This video did not show or better said will not help anyone. One of the things we look on these videos is precisely how to do it ourselves basis.

  13. Avataaar/Circle Created with python_avatars Tom Beilman says:

    Didn’t know you could get a 4 in a frontier, I have the Xterra with the V6 , 05 with 127000 miles, no problems so far

  14. Avataaar/Circle Created with python_avatars NotMe says:

    It's a japanese toy truck… That's why it has no power.

  15. Avataaar/Circle Created with python_avatars Cesar Jorge Murillo Barientos says:

    good

  16. Avataaar/Circle Created with python_avatars Rene Peralta says:

    Hi im rene beers i like the way u work can u give us an advise how to do test old school u dont have to do it just let us know how u will do it without tek tool

  17. Avataaar/Circle Created with python_avatars Sebastian Villela says:

    Thanks helped me diagnose a 17 frontier with p0304 same problem

  18. Avataaar/Circle Created with python_avatars Send It says:

    Love watching a true genius

  19. Avataaar/Circle Created with python_avatars Send It says:

    This guy does great videos so give him a thumbs up

  20. Avataaar/Circle Created with python_avatars Cris Knapp says:

    time 2 buy a vehicle with 6 or 8 cylinders lol

  21. Avataaar/Circle Created with python_avatars Jeffery Powell says:

    dip stick was broke n holding flap in oil pump tube open

  22. Avataaar/Circle Created with python_avatars Jeffery Powell says:

    than had a caddy with oil pressure truble chilton manel said broken pump or out of oil

  23. Avataaar/Circle Created with python_avatars Jeffery Powell says:

    once i had a fiero n a chiltions said on hard starting check butterfly choke in carb hell it had efi

  24. Avataaar/Circle Created with python_avatars Jeffery Powell says:

    some of the best work ive seen

  25. Avataaar/Circle Created with python_avatars Hawk 1966 says:

    The orange radio and info center. Eww! Who could drive around staring at that all the time. Even the old 'everything is green' dashboards of the 70s is better than that. Friend had a Firebird or some lame sporty car with all red on the lighting, it was like battle stations in a submarine. I like Chrysler's white dashboards.

  26. Avataaar/Circle Created with python_avatars Brian Adams says:

    All Nissans are 14mm spark plugs.

  27. Avataaar/Circle Created with python_avatars Jimmy, Making it work says:

    I like to use my 02 adapter and a vacuum gauge to read exhaust pressure, besides intake pressure and MAF data. This is an old video, but lets bring it back up. 🙂

  28. Avataaar/Circle Created with python_avatars Chris Boucher says:

    i thought i knew a lot about cars till i started watching you. you're very good

  29. Avataaar/Circle Created with python_avatars Major Payne says:

    👍Scotty Kilmer had a clogged converter & soaked it for 24 hours in either acetone or lacquer thinner 5 gal bucket then reinstalled w/ no issues.
    Any thoughts?

  30. Avataaar/Circle Created with python_avatars Ted Striker says:

    You diagnosed it the hard way. Just unscrew the O2 sensor in front of the cat to give the exhaust a place to go. It will run normally. Replace it with a $100 cat from ebay, done. I'm so glad I live in a state that has no vehicle inspection. What a bunch of crap that is to have to deal with. In this guys case, he should repair the cat himself. Takes the heat off the repair shops who have to follow all those rules.

  31. Avataaar/Circle Created with python_avatars strange beautiful music says:

    What in the thunder is that rattling, it's driving me nuts!

  32. Avataaar/Circle Created with python_avatars Goodbye California says:

    The cat plugged up on a Chevy S-10 suddenly and it wouldn't Rev beyond 2k, I unbolted the exhaust on the side of the road and drove it home dragster style, then bought another replacement cat and welded it in. They can plug up suddenly.

  33. Avataaar/Circle Created with python_avatars Dodger Fan120 says:

    Thumbs up for explanation.

  34. Avataaar/Circle Created with python_avatars Kenneth Huff says:

    Put a straight pipe on that baby ,make it sound like a six banger, glad I live in a free state.

  35. Avataaar/Circle Created with python_avatars A LOUIE IN A BOX says:

    This is why I only drive older cars…to many sensors in top of sensors .. I like the ability to look at a engine..and figure it out…I would need 6 years of computer automotive classes to work on these new cars cuz I couldn't understand any of that computer stuffs

  36. Avataaar/Circle Created with python_avatars m Cave says:

    A pickup with 4 cylinders is like a man with 1 ball worthless.

  37. Avataaar/Circle Created with python_avatars Ryan Villa says:

    Drill a hole through the honeycomb

  38. Avataaar/Circle Created with python_avatars ugh3012 says:

    Did anyone see what it looks like cracked weld at 17.20 bottom right?

  39. Avataaar/Circle Created with python_avatars Bill Groel says:

    Good video thank you for sharing

  40. Avataaar/Circle Created with python_avatars Bruce Sheehe says:

    I really enjoy this channel.

  41. Avataaar/Circle Created with python_avatars Kyfer Ez says:

    I absolutely LOVE how you make your decisions based upon data! You are the best automotive tech I've seen. I WISH ALL automotive techs had your level of professionalism and data-driven decision making processes. From now on I'm going to request factual proof from any auto tech looking at my car before approving any repair. From your videos, it's clear the data can be provided.

    You know what I would love to see from you? A collection of videos where you publish known automotive issues and how to identify them based upon the OBD2 or CAN bus data. Please please please do something like that!

  42. Avataaar/Circle Created with python_avatars blcdad says:

    What should the pressure reading be normally at idle and 3000 rpm?

  43. Avataaar/Circle Created with python_avatars Paublus Americanus AMERICANUS says:

    I had the same thing happen and I ran a bar through it at home and the car had more acceleration than when new. This poor guy just lost his vehicle that could be corrected with a tiny forging furnace that will run up to around 800 to 900° with oxygen softly flowing through it for about 50 to 100 bucks just because it needs taken off and would then work perfectly and pass fed law.

  44. Avataaar/Circle Created with python_avatars Hola! Stephen Gordon says:

    Had to replace all four of my converters on my 07 pathfinder ,it did almost the same thing !

  45. Avataaar/Circle Created with python_avatars Shane Harrison says:

    Sounds like a plugged exhaust or a messed up egr valve and what's that rattling

  46. Avataaar/Circle Created with python_avatars Quiet Knolls says:

    Before you even tested it I figured that's what it was.. I have a v6 pathfinder of the same era and I have replaced…. All.. 4.. catalytic converters (with cheap ass ones that'll probably only last a few years). Those O2 and AFR's are actually pretty stout on these. I took mine off about 5 times and it was tough the first time but not horrible.

  47. Avataaar/Circle Created with python_avatars Lisa Cullen says:

    That's a lot of wasted Diag for a clogged cat. Next time take your truck to the dealer and save some money. A simple test drive from a professional, will identify an exhaust restriction. I hope he didn't charge the customer for all that fancy Diag.

  48. Avataaar/Circle Created with python_avatars what ? says:

    the ol banna in the tailpipe trick .

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