Adam- you couldn't be farther from the truth. When your Disco pops a misfire code but it won't stay running, what do you do? What will your computer do? Put a plug wire on it... then try again... then a plug... then try again...
If one understands the basic fundamentals of what makes an engine work, you can use that theory in addition to scientific method to decide the course of action. If you pull a spark plug and it's grainy and gray, what will the computer tell you? Can your computer run a compression test- will it tell you when to do one? Computers are but one tool in the tool box- and really not more important than a simple volt/phm meter.
Educate yourself of what makes it tick- don't rely on the laptop. Can the laptop tell you what the fluid smells like when it's bad? geez- God forbid there's a truck with no codes and doesnt run well. Whetever will you do?
We have a D90 in the shop now with a slipped liner- no codes on the OBD. Happens all the time. What about when the MAF fails and it tells you "improper gear ratio, 3rd gear" and that's it? new transmission? That's what the dealer told a guy with a P38 two weeks ago and quoted $7K. I put a used MAF on it just to see- fixed it, $58 out the door.
See ya on the computer!
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2002 Freelander
2000 DII w/CDL
1967 SIIA 109SW
Former Rovers
2004 Modded "S" Disco, R.I.P.
2004 G4 Disco
2002 Modded Freelander
1995 Modded Disco
1994 D-90 #8
1993 NAS D110
1990 Range Rover County
1973 SIII 88
1972 Range Rover 2 door
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