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Old 06-12-2019, 10:45 AM   #16
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Re: Suggestions for Best Affordable Code reader/diagnostics


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My Ancel AD350 test unit came yesterday and I hooked it up and went through some of the things it tells. But to be honest, I don't have a clue what all that stuff means or how to use the information it is reading. I know how to operate the unit, it is the understanding of what is going on that I don't get.

I do know the Pathfinder doesn't have any codes outstanding right now. I also know the truck has cleared all monitors that would stop me from getting it inspected, it passed with no problems at all.

I also know the battery is operating at full, at least that is what the graph shows. What I want to know now is how do I tell if the truck is running rich or not. The gas mileage is not very good. Maybe we are use to the gas mileage of the little Nissan Altima that got wrecked. We are at this time checking to see what the actual gas mileage is.

Back to the tester, I do like one of the things it does, because when it does post a code, it will state what to check that usually causes the problem, and I really like that. It also will show any codes that have ever popped up.

I need to do a setup so I can read the temps of the engine and transmission from C to F. I also need to plug into my pc to see if there are any updates for the tester.

I guess I will learn as I go, I sure hope so.

Pull up short term fuel trim (stft). Should be bouncing around 0 to 10 and -10. Anything bigger than that, you have a problem. Pull up Long term fuel trim (ltft). Should be small numbers. If it's -20 or -40, it is pulling fuel away which means fuel is being introduced some other way as in fuel regulator is dumping fuel through the vacuum side. If trim readings are 20 on up means it's adding fuel because of vacuum leak or plugged up fuel injectors. When you get bad readings of fuel trim, it could be anything as a coolant temp at -40 cause it's broke or just bad. So onward. Give us some readings and we'll go from there.
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Old 06-12-2019, 04:47 PM   #17
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Re: Suggestions for Best Affordable Code reader/diagnostics


Couldn't help but laugh at Raylow32's last post. Too many hobbies to remember all the codes, until I need 'em. I'll share this though, I just had the slickest smog check ever. I live in SoCal, where we are notorious for taking the fun out of everything, not the least of which is driving but hope spings eternal. This year, the smog guy connects up to the OBD2, pops the hood and looks around, shuts off the car 5 min later and says, "You passed", no sniffer, no high/low rpm, nada....but it gets better, 5 mins later I was in my local Albertson's Grocery store standing in front of the DMV kiosk w/ renewal in hand, scanned the barcode, typed in some keystrokes, fed it my CC, and voila, it spits me out a registration renewal WITH a sticker! Keep that up and I may even consider telling strangers what state I live in.

Last edited by measure2cut3; 06-12-2019 at 05:16 PM. Reason: incomplete post
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Old 06-12-2019, 05:11 PM   #18
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Re: Suggestions for Best Affordable Code reader/diagnostics


My stars, that is unreal, I didn't understand a word you said. No wonder these units are as reasonable as they are, only the smartest of the smart can understand how to understand them. I will do my best to get some numbers and post them and let you interpret them for me.

Man, what ever happened to just a plain ole 327 or 427 chevy, if it didn't run right just adjust the carbs or readjust the points or valves and you was good to go. These new cars now days are totally unreal, you have to have an education of a doctor just to understand them.
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Old 06-12-2019, 05:29 PM   #19
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Re: Suggestions for Best Affordable Code reader/diagnostics


It all began under the auspices of emission control, and just morphed from that, but I have to admit, I find certain aspects of the computer control system worthwhile, dare I say enhancements not even attainable from the Rochestor Quadrajet or even (perish the thought), that Holley 650 cfm sitting atop my '68 Gran Sport Convertible . Nah.
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Old 06-12-2019, 07:13 PM   #20
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Re: Suggestions for Best Affordable Code reader/diagnostics


I use a bluetooth adapter called OBDLink LX. It comes with free software for android and windows. I use the android exclusively on a Samsung tablet. Works great for live data feeds. I monitor fuel trim, MAF g/s, cylinder head temp, transmission fluid temp, coolant temp... pretty much anything I want. Since I have a Ford and Lincoln I also use a free program called Forscan, that can read all the Ford codes that generic scanners can't. It will display trouble codes that are OEM Ford specific too. That's how I found out my wife's Windstar had a bad MAF sensor. No MIL light ever came on but it had a MAF Intermittent Fault code stored. I graphed the MAF sensor voltage output and it was all over the place. Replaced it with a junkyard part and her stalling at stoplignts problem disappeared.

I think a high quality scanner is pretty much essential. You can get an OBDLink MX+ for $80. My LX is $50. I have old cars that don't require the MX+.
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Old 06-12-2019, 07:26 PM   #21
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Re: Suggestions for Best Affordable Code reader/diagnostics


I don’t know what vehicle you want a scanner for, but for my pickup I use an Edge Insight. It mounts to the windshield and gives me real time engine parameters right off of the OBD II port.
It also reads and describes codes.
IIRC they are available for both gasoline and diesel powered trucks.
In the 5 or 6 years I’ve owned it it’s proven quite useful several times over.
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Old 06-12-2019, 09:25 PM   #22
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Re: Suggestions for Best Affordable Code reader/diagnostics


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It all began under the auspices of emission control, and just morphed from that, but I have to admit, I find certain aspects of the computer control system worthwhile, dare I say enhancements not even attainable from the Rochestor Quadrajet or even (perish the thought), that Holley 650 cfm sitting atop my '68 Gran Sport Convertible . Nah.
How about the old two barrel Strumburg carb, I hated that thing, three springs on just the pump, never could get them right. lol
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Old 06-12-2019, 10:04 PM   #23
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Re: Suggestions for Best Affordable Code reader/diagnostics


Yea, those too Jim, love/hate relationship, Carters too, all made in America, plus Webers & Solex across the sea... My mechanic "career" started with a Citroen Dlr (2 bays with O feet of free space) but he was all there was in Az, we'd get 'em on the hook from Tucson, Flagstaff, not much else back then. My first car in MS was a Citroen, my school chums had Impalas and pick ups, lol. Early lesson in being apart from the crowd-1962 Citroen ID 19 w/ 4 on the column.
https://images.app.goo.gl/RAj3UDcmFpVvrNxK8

At least our generatioin had the experience of being on both sides of the changes, something those that come after won't ever know...unless they enjoy trudging around junk yards.
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Old 06-13-2019, 09:09 AM   #24
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Re: Suggestions for Best Affordable Code reader/diagnostics


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Yea, those too Jim, love/hate relationship, Carters too, all made in America, plus Webers & Solex across the sea... My mechanic "career" started with a Citroen Dlr (2 bays with O feet of free space) but he was all there was in Az, we'd get 'em on the hook from Tucson, Flagstaff, not much else back then. My first car in MS was a Citroen, my school chums had Impalas and pick ups, lol. Early lesson in being apart from the crowd-1962 Citroen ID 19 w/ 4 on the column.
https://images.app.goo.gl/RAj3UDcmFpVvrNxK8

At least our generatioin had the experience of being on both sides of the changes, something those that come after won't ever know...unless they enjoy trudging around junk yards.
I remember seeing those, I didn't know what they were called though. My first car was a 49 Plymouth, that thing smoked like a tar kiln. When I gave it the gas I had to hold my head out the window to see where I was going it smoked so bad. LOL Life sure was a lot simpler back then. As for being a part of the crowd, I was always an outsider, never had any britches with the little buckle in back. lol Went to the same school Elvis did, had the same English teacher he did, didn't do me any good. lol
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Old 06-13-2019, 01:30 PM   #25
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Re: Suggestions for Best Affordable Code reader/diagnostics


Too funny, we were definitely known by the car we drove, probably why folks couldn't figure me out...they didn't know what the heck I was driving...until Dodge and GM saved me! lol No need for a tat for you either, Jim, probably had enough markings from the smoke alone, & bumping your forehead on that window frame. LOL How I Love those stories, but how'd we get from that to where we are today...with so many pot holes on that road of life our kids are driving down? But I digress....
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