Are most problems with "modern" vehicles electrical? - Chevy Traverse Forum: Chevrolet Traverse Forum
 
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post #1 of 10 (permalink) Old 09-10-2019, 07:47 AM Thread Starter
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Are most problems with "modern" vehicles electrical?

I would say they are. And...therein lies the "rub"......so to speak. Having read multitudinous posts where DIY'S ,upon seeing a code, start changing parts, hoping against hope, they'll "eventually" hit on the problem instead of analyzing the problem and changing the "bad" part. No wonder the auto parts stores' stock are in the hundreds.


It appears most DIY'S are electrically "challenged",............ when a 12 volt system is really simple. There can be only 3 problems; An open, A short to ground,or high resistance. Check and find, or eliminate, these potential problems then the bad part can be changed. It has been shown that an added 1 ohm resistance in a particular circuit can stop a 500 hp diesel engine. As vehicles age loose connections, corrosion, etc. really becomes a problem.



Caveat Emptor: Take the computer out of the circuit before checking.........Or, if your "savey" enuf to check the "reference" voltage,witch is 5, coming out of the computer controlling a particular sensor be very careful not to inadvertently add any load, witch test lights and some volt meters can. Computers are not cheap.


I could be way off base here, but after awhile looking at these forums thats the way I see it.

Last edited by srwa; 09-10-2019 at 07:55 AM.
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post #2 of 10 (permalink) Old 09-10-2019, 08:33 AM
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I tend to agree... manufacturing tolerances and procedures as well as engineering advancement have produced drivetrains that are very reliable, what you find is a sensor or something else that goes bad and it's much more difficult to track down that problem in the supercomputers that are modern cars vs. classic cars.

I will say, because there aren't as many issues with the drivetrains they are much more difficult to work on and when a mechanical problem does occur (Traverse waveplates, etc.) they seem magnified because they are now the only problem with that model. Classic cars just always had a bunch of small issues and always required more maintenance to keep them running well, but they could tolerate being out of tune or having issues more than a modern car can.

Current Vehicles:
-2015 Pilot EX-L AWD
-2014 Traverse LT2 AWD
-1961 Impala 2 Door Sedan 283 3MT

Family Muscle:
-1969 Camaro SS 350 4MT
-1957 210 2 Door Wagon (project)
-1939 Ford 3 Window 2 Door (project)

Past Vehicles:
-2008 Sonata SE V6
-2012 Silverado LS 4.8 4WD EC
-2011 Rogue SL AWD
-2006 Accord Sedan EX-L K24 5MT
-2012 Tacoma DCSB V6 6MT 4WD
-2011 Civic Si Sedan
-2001 Pathfinder VQ35 5MT 4WD
-1997 Pathfinder VG33 4AT 4WD
-1999 ML320 4WD
-1997 Accord LX Sedan F22 4AT
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post #3 of 10 (permalink) Old 09-10-2019, 01:00 PM
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I can add that most back yard mechanics were able to do their maintenance the easy way like points, timing with the strobe light, plugs etc. Not anymore.

Traverse 2017, chevy Uplander 2009 LT short wheelbase, Impala 2003, jeep cherokee Laredo 1990, chevy citation 1984 2.8 v6, vauxhall Firenza1972, rambler american 1964 model 330, vauxhall velox 1956 rebuilt, NSU Prinz 1961 2 cylinder micro car rebuilt, Renault Dauphine 1960 rebuilt, ford prefect 1952 ( english car with non hydrolic brakes rebuilt. Honda 1986 motorcycle in new condition and 13 travel trailers from a Boler 1300 to a Rockwood mini lite 20 feet.
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post #4 of 10 (permalink) Old 09-10-2019, 01:07 PM
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Quote:
Originally Posted by Capucine View Post
I can add that most back yard mechanics were able to do their maintenance the easy way like points, timing with the strobe light, plugs etc. Not anymore.
Right... even something like replacing head gaskets wasn't all that complicated, could be done in a couple hours.

Current Vehicles:
-2015 Pilot EX-L AWD
-2014 Traverse LT2 AWD
-1961 Impala 2 Door Sedan 283 3MT

Family Muscle:
-1969 Camaro SS 350 4MT
-1957 210 2 Door Wagon (project)
-1939 Ford 3 Window 2 Door (project)

Past Vehicles:
-2008 Sonata SE V6
-2012 Silverado LS 4.8 4WD EC
-2011 Rogue SL AWD
-2006 Accord Sedan EX-L K24 5MT
-2012 Tacoma DCSB V6 6MT 4WD
-2011 Civic Si Sedan
-2001 Pathfinder VQ35 5MT 4WD
-1997 Pathfinder VG33 4AT 4WD
-1999 ML320 4WD
-1997 Accord LX Sedan F22 4AT
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post #5 of 10 (permalink) Old 09-10-2019, 03:39 PM Thread Starter
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Have ya'll ever heard of Dan Sullivan and his LoadPro.?




Now, in my extremely humble opinion, this is electricals 101 and the tool to do it with.


I stumbled on to this awhile back.


Disclaimer: I'm not selling these things nor do I even own one......... yet


This fella got several videos out that are pretty good.....check it out.


Just my 2 cents worth..
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post #6 of 10 (permalink) Old 09-10-2019, 05:31 PM
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That's why you have to be extremely careful buying a used car - an inch or two in the passenger compartment, could be from an open sunroof, leaking windshield, or parked in a flood area and dried out buy the owner with no Carfax. etc. WIll work fine for a few months until all the splices and multipin connectors in the driver's side tunnel and under the seats start to oxidize and corrode; changes in resistance and capacitance readings change sent over the CAN bus confusing the ECU and any unpredictable electrical screwup is possible.

Current Chevys -'19 Silverado RST;'18 Malibu LT Redline;'18 Traverse Premier Redline<br /><br />Previous&nbsp; Chevys:16 Silverado LT;16 Malibu LT2;'17 Impala;'16 MalibuLT;'15 Camaro LS;'15 Traverse; '13,'12 and '07 Avalanche LTs; '11 Tahoe LT; '13 &'11 Malibu LTs; '08 Trailblazer;'06 Colorado WT..... Chrysler era.....'80 Citation;'75 Impala;'72 Chevelle;'69 Camaro R/T;'65 Impala SS;'62 Nova
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post #7 of 10 (permalink) Old 09-10-2019, 09:01 PM Thread Starter
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First car was a 39 Packard, bogt it in 55 for $95.00, year I finished high school. Black, weighted 8 tons, solid steel, suicide doors. Gear shift on the steering wheel, low was in your lap, second was thru the windshield, high dropped thru the floorboard. Straight inline 6,pistons the size of dinner plates. Believe it first belonged to Al Capone............just kidding.


No emissions, sensors, computers,etc. Also, no power anything, especially a/c. A/C? What was A/C?


But, it was easy to work on, witch, as old as it was ,was on a daily basis. Miss the old days? Not hardly, enjoy the creature comforts these modern vehicles have. But it comes with a price witch these forums can attest to and we have discussed here.
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post #8 of 10 (permalink) Old 09-10-2019, 10:28 PM
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Following your tread SRWA my first car was a Ford Prefect 1952 paid $60. Mechanical brakes all around. Could hardly stop this oldie. Transmission would not hold in second and floor shifter had to be held to stay in second gear. Oil had to be made thicker so pouring bananas in the transmission was a way to make the oil thicker no joke. Flat head engine was a piece of cake to repair. It was the good old days. Now we can return to the modern time . Lol

Traverse 2017, chevy Uplander 2009 LT short wheelbase, Impala 2003, jeep cherokee Laredo 1990, chevy citation 1984 2.8 v6, vauxhall Firenza1972, rambler american 1964 model 330, vauxhall velox 1956 rebuilt, NSU Prinz 1961 2 cylinder micro car rebuilt, Renault Dauphine 1960 rebuilt, ford prefect 1952 ( english car with non hydrolic brakes rebuilt. Honda 1986 motorcycle in new condition and 13 travel trailers from a Boler 1300 to a Rockwood mini lite 20 feet.
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post #9 of 10 (permalink) Old 09-11-2019, 06:12 AM Thread Starter
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Capucine; forgot about the mechanical brakes. Those were real "dandies" when they worked, might as well stuck your foot out
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post #10 of 10 (permalink) Old 09-11-2019, 06:46 AM Thread Starter
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Speaking of codes....don't recall anyone speaking of codes. Anyway, back last year when I bought the 15 Traverse,in May, was gonna pull a little maintenance, change oil, filter, PCV valve etc.



Well, I literally destroyed the top of the valve trying to remove it. There's pictures somewhere. Never did come out. I started the vehicle with the hose off. It didn't idle very well, understatement, pulling a straight open vacuum.



CEL came on, 17 pending codes were set. Spent half the night rebuilding the top of the valve and reattaching the hose,pictures somewhere. The codes went away



Point? the computer didn't know what was happening and just started setting codes.



Meanwhile, back at the ranch, GM doesn't show anything concerning a PCV valve..........But, O'Riellys & Autozone Auto Parts sell them.
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