All to often I see techs chasing their tails trying to fix in an issue and assuming the new part they put on was the wrong diagnosis simply because the symptom they were attempting to repair is still there. Always go with the data and never assume NEW means GOOD. -Enjoy!

50 thoughts on “Just because it’s new, doesn’t mean it’s good”
  1. Avataaar/Circle Created with python_avatars Jason Marks says:

    ABS all bullshit

  2. Avataaar/Circle Created with python_avatars Casey Powell says:

    Brand new ac Delco coil on a head gasket job on a 1995 chevy pickup the thing ran beautifully for 2 months then the coil was just go figure these days lol!!!!

  3. Avataaar/Circle Created with python_avatars Jon Hodgkins says:

    02 duramax lb7 (yes, the worst injector one) PO replaced injectors with ebay special injectors, 8hrs of labor later, truck still spewed white smoke. Took to diesel shop for balance test… junk injectors. New,junk injectors. Another 8 hours of labor and the correct injectors from bosche, no more issues.

  4. Avataaar/Circle Created with python_avatars Mikey P.C. 747 says:

    I know this one bellhousing bolt that was a pain in the ass to get too lol

  5. Avataaar/Circle Created with python_avatars Roy Yazzie says:

    A defective part there

  6. Avataaar/Circle Created with python_avatars Eddie Bear says:

    I installed three bad thermostats once from autozone. I gave up and finally went to the dealer. It was on a dodge intrepid which is the hardest ones I have ever done and had to do it four times. Horrible.

  7. Avataaar/Circle Created with python_avatars chris harris says:

    Put a new cat on my impala because the original was plugged and the new one was plugged.

  8. Avataaar/Circle Created with python_avatars Eugene Whipple says:

    back in the day u could trust new adays u cant cause most everything is made in china with cheapest labor possible n crappy quality control

  9. Avataaar/Circle Created with python_avatars Mark Fortwengler says:

    I changed 3 altonators out from my car,and at the 4th attempt, the guy at auto store tells me we don't sell aftermarket parts for your car!!went to junk yard found used one had it rebuilt, put it in the 4th time,and it finally worked!Bob's your uncle!!:)

  10. Avataaar/Circle Created with python_avatars OcRefrigeration , Hvac & Electrical Video's. says:

    Good vid ! in My trade i Have to inspect everything before i even leave the supply house. some boxes get dropped and u open the box and the new part is cracked inside , motors that dont turn or turn badly from being dropped. a bad looking box 📦 is a part i usually try to stay away from ive found.
    inspect BEFORE install. allways.
    test before install. ohms etc.
    can save alot of Headaches.

  11. Avataaar/Circle Created with python_avatars Jake M says:

    I wish I would have found your channel years ago! Thanks for the great videos! Thanks der folks!

  12. Avataaar/Circle Created with python_avatars fixed game says:

    I only drive cars pre 1975 -3 computers to turn on headlights lol no way

  13. Avataaar/Circle Created with python_avatars TigerDude333 says:

    this should be told to everyone who wants to buy a new Chrysler product

  14. Avataaar/Circle Created with python_avatars matthew bick says:

    I’ve Been at this way to long thinking 54 years this year my list is everything new means a little better chance then used lol 😂

  15. Avataaar/Circle Created with python_avatars Eric d says:

    for me it was fuel pump & water pump both was bad.

  16. Avataaar/Circle Created with python_avatars MeMakeSparks says:

    That's better…. And creepy 😆😆😆😆

  17. Avataaar/Circle Created with python_avatars Spinonemaster says:

    Decades ago I when I was maybe 21 I had a new 1975 Saab EMS ( I was a professional skier/racer, good car in the snow) went to the movies with my girlfriend on week 2, came out and it wouldn't start, diagnosed no audible fuel pump action (in tank) I had had a few Saabs … my Dad was a dealer, had it towed, they replaced the fuel pump … a week later it happened again, another new fuel pump, a month later it happened again, replace (all warranty work) … I was experienced enough to know that there was no way 3 pumps (I think Bosch) could all be bad … and it happened again out on the highway rest stop heading to VT, was getting tired of taking all my stuff out of the trunk including the carpet liner to the access port and harness … wires were fine, connections good … hot and ground only … then saw a small port off to the right, open it and there was the green ground wire sunk into a frame piece with a self tapping screw .. screw was stripped (at factory) and a little corroded … cleaned the frame and has a slightly larger screw in my bag of tricks witch made a firm ground connection … so in retrospect, while replacing fuel pumps they would pull/jar the ground to contact, then it would jar and "un-ground" itself again randomly … pain in the ass, but a very good lesson in the importance of checking ground, harnesses and to not just throw new parts at problems … my Dads mechanics were all GM guys and hated the Saabs and Subaru's back then … and it showed in there work … I finally convinced my Dad to hire a good/skilled foreign car mechanic and it solved many of the "transition" to foreign car problem most dealer were experiencing back then … I'm now 66 yrs old and grounds are still the first thing I check 40 years later … lol … just replaced a sometimes funky coolant fan relay today on my 2000 Jeep Cherokee … and while doing it I cleaned and lubricated the main fuse block ground ; ) some lessons do stick Eric … and I never assume that new fancy part in the box is actually functioning … I routinely bench test before install if I can …

  18. Avataaar/Circle Created with python_avatars Jeffrey Blair says:

    I like the acronym for new.

  19. Avataaar/Circle Created with python_avatars Alex says:

    I work with large enterprice IT networking and my worst experience with this was a firewall where my brand new cat6 cable did not work and I went through so much diagnoses for finding the fault

  20. Avataaar/Circle Created with python_avatars David Warren says:

    We called it bnb brand new droke

  21. Avataaar/Circle Created with python_avatars Mark Belden says:

    Ole moms 4.0, I put a rock auto coil on it. 6 months it had a intermittent miss, replace with oem Ford, runs like a champ

  22. Avataaar/Circle Created with python_avatars Marcus Landhuis says:

    About a year ago, the ABS light on my girlfriend's car turned on and the thermometer for outdoor temp started functioning erratically. After a shop said it was a bad ABS sensor and I checked it with a cheap OBDII scanner, which came up with the same diag, I thought I'd try to change it. New sensor was about $250, put it in, didn't work. Thankfully I ran across a break in the wiring while I was doing the work – it looked as though a small rodent of some type had chewed through the wiring. Same problem for the thermometer. I was able to fix both with about $10 of wire and parts, and to return the ABS sensor!

  23. Avataaar/Circle Created with python_avatars Greg Hill says:

    this is the problem in all trades cheap fake crap made in china no quality control or any pride in their parts there

  24. Avataaar/Circle Created with python_avatars J J says:

    Mine was a spark plug. I did the plugs and fired it up on a 5.3 Chevy and when I started it, i was not happy. I thought my coil was bad. I called my buddy and he told me replace all my plugs again. Everything was happy after I replaced them. He came over and found a very fine hairline crack in the porcelain. Someone probably dropped the box of plugs.

  25. Avataaar/Circle Created with python_avatars HotelCarolina says:

    Was doing a 5.2 V8 swap into my 95 Dodge Dakota 3.9 few years back. Rebuilt the whole motor and put all new advance auto sensors in. After months of building, the time came to drop her in. Hooked everything up and started it up. The thing struggled to run, ran rough for a few seconds then would just die. Went through weeks of trying to diagnose what was going on. Finally gave up and brought it to a shop who could also not figure it out. Got it back and went junkyard searching and picked up a Mopar crank sensor. Took the old BWD sensor out (Broke When Delivered) and put the OEM junkyard one in and the thing fired right up and ran with no problem. Finally got to drive it down the road for the first time in 3 months since putting the motor in and I beat myself up for not going with OEM parts. I haven't stepped foot into another auto store unless I'm buying brakes or fluids. Always go OEM when it comes to electrical components/sensors people

  26. Avataaar/Circle Created with python_avatars varanidguy says:

    I had an old 87 Honda CRX, the thing was a crap-box, to put it nicely. Cold idle was terrible, RPM's were really low and it would stall while idling during the winter time. Damn thing had a carb rather than injectors. I found a local shop that sold me a brand new carb for it, looked sweet. Didn't fix the problem (the vacuum lines to that thing were a joke). That didn't fix the issue…turns out the stupid thing just needed a deep clean of all the carbon deposits then it ran pretty well, until it didn't. Engine eventually gave up and scrapped it, but holy crap did that thing send me on wild goose chases when it still existed.

  27. Avataaar/Circle Created with python_avatars Big Daddy says:

    Brake master cylinder failed on the bench. It was the last one on the shelf. Took a few days to get a replacement.

  28. Avataaar/Circle Created with python_avatars MrOnemanop says:

    Critical thinking. You do it very well.

  29. Avataaar/Circle Created with python_avatars chris gollihar says:

    That's why I buy mostly from Napa! Lol… NAPER. LOL

  30. Avataaar/Circle Created with python_avatars Simon Robertson says:

    Mine was gmc knock sensors on an 05 6.0l. Changed the front and back 3 times before I got the code to clear. First time was cheap knock sensors. Then I read online to by the ac delco part. So I found some ac delco knock sensors on Amazon ( maybe the were knock offs, not sure ) and that didn’t work so finally I went and sourced proper ac delco knock sensors and it finally worked. I got pretty good at pulling the intake off. That was my learning lesson if I’m gonna save money and do it my self then i should at least by good quality parts.

  31. Avataaar/Circle Created with python_avatars Mark Ferrick says:

    2004 Ram fuel pump. Lifted the bed off, replaced the pump, truck started fine. Sucess… Put EVERYTHING back together and truck runs fine. Noticed the fuel sensor not reading. Took bed back off, bad sensor in the NEW fuel pump. Ugggh.

  32. Avataaar/Circle Created with python_avatars BigD teakettle says:

    In 1976 I had a brand new Chevrolet Caprice, with less than 10 miles on it, in my stall at the dealer. When you would step on the breaks all of the parking lights, front and rear, came on. I started testing the circuit by removing a bulb and seeing what kind of electric signal I got on each terminal in the socket. As soon as I removed the first bulb everything started working right. I put a new bulb in it and everything was fine. I still have the bad bulb in the top of my toolbox and magically found its way into a couple of other vehicles and they had the same problem.

  33. Avataaar/Circle Created with python_avatars pSiLoKaTaLiSt says:

    1993 trans am lt1 had all the codes for Opti spark sensor,. Replaced with the fancy $500 msd unit because u can't find a nice oem anymore. It started to run but was having issues idle was all over some times like 2500 rpm. When u drive it would accel then just drop back to idle even with ur foot mashed to the floor. Sent it back got another did the same thing even after msd said their was no issues. Replaced with the cheapo oriely part ran fine. Spent so much time trying to diagnose it and replacing it had to take the balancer and water pump ever time I changed it

  34. Avataaar/Circle Created with python_avatars Peter Torregrossa says:

    Multiple optisparks on an lt1 camaro

  35. Avataaar/Circle Created with python_avatars Ride With Chris says:

    Just finished a mobile job (at the time of this posting) on a '97 Chevy 1500 pick up. Did a new oil pump, oil filter stud and pan gasket. Go to start it and now has a crank but no start issue. Spent a week chasing down what turned out to be the wires to the crank sensor were exposed and touching thus causing a short to ground. Separated them, wrapped them up and sure enough, truck fired right up.
    Always check/test your wires, relays and fuses to start off.

  36. Avataaar/Circle Created with python_avatars skelafeti says:

    my pickup coil went bad, bought new at parts store, didn't want to run worth a crap, new part ohm'd correctly but still wouldn't run the truck right. I retimed it from one extreme to the other with no improvement. I chased this issue for a while since it was a old truck not driven much.
    Guy said did you try replacing the new part? I said no why it tested ok? He was like try it anyway, so I did with a OEM part.. Yep that was the problem. cheap chinese crap had me chasing my tail.

  37. Avataaar/Circle Created with python_avatars William Vangorden says:

    It's a good way to make somebody look bad because of these damn Outsource parts. That is one of my biggest fears not so much the quality of the car but the parts that are lacking the quality.

  38. Avataaar/Circle Created with python_avatars kaimanson says:

    The Odyssey is well known for being rough on the alternator…people going with any other brand than Denso are likely doing it any time soon again….and it is a pain of a job. Do it right, do it once.

  39. Avataaar/Circle Created with python_avatars Crystal says:

    What a damn mess from Chrysler again… I swear they just seem to slap everything together no matter how dumb it looks,

  40. Avataaar/Circle Created with python_avatars Corrupting Virus says:

    installed new brake pads on a dodge charger, noticed the rotors were warped after. installed new rotors and my calipers seized while driving. installed new brake calipers, noticed my brakes sucked again, installed more new pads, noticed the rotors were warped…
    took quite a few brake jobs to get everything right

  41. Avataaar/Circle Created with python_avatars Mark Hastings says:

    Bought a new clutch for my figure eight car. Wanted a good one, I had already chewed up cheap clutch disks pretty quick. Opened the box at the auto parts store, someone had put a cheap disk in the box of an expensive disk and returned it for a refund. The parts store owner found out one of his employees pulled the swap. The guy got fired and I picked up the auto parts store as a sponsor. Got 3 years out of the good clutch.

  42. Avataaar/Circle Created with python_avatars Ivan Olsen says:

    did you try the one you took out ..after you did the cleaning

  43. Avataaar/Circle Created with python_avatars Ivan Olsen says:

    and …just because someone said they replaced it ( the old one ).
    …..doesn't mean they did …. whose to say it was even making contact with all that crud you found need to clean off ( and out )

  44. Avataaar/Circle Created with python_avatars Scott Wilcoxson says:

    Recently, repairing my 1990 Buick LeSabre. The Ignition Control Module tested bad. Got a new one from a reputable dealer. No improvement. Tested it later as bad. Got another in replacement. Tested it first. Good. Now the car runs. The ICM turned out not to be the whole problem. That entire repair was a learning experience. But new bad parts don't help. I'm very suspicious of new parts now.