Thread: Diagnostic soldiers- throwing parts in hope

Originally Posted by LandyAndy

We had an Isuzu truck in to the dealers to diagnose a "check engine" light/power de-rate.
They charged over 10 grand for a new fuel pump and injectors(common rail motor),it was back a week later looking for the same fault.They couldnt get it to fault and did nothing.
Next time it happens they want us to call them and they will send a spannerman out.OH,they expect us to leave it where it is with the motor idleing to they get here.They are 175kms away.Key off resets the issue and its not leaving a calling card in the ECU.
Andrew

Further info on this truck.
It is undergoing a major refit instead of trading it on a new truck.
Our mechanic found the turbo manifold to be cracked and the turbo had enough play in it to warrant a service,it was sent off to Turbotech.Came back all good after a service,it had a faulty wastgate causing overboost.
Im guessing that was the reason for the check engine light.
Why didnt the dealer spot the cracked manifold and look at the turbo????
They also told us they removed and cleaned the fuel tank,funny thing is the bands that support the tank have never been undone,2 bolts are bent and all the dirt we sent it there with is still in place
Andrew

Electronic Diagnostics

Any one that has actually had to do this on a daily basis would Know that it actually an Electronic BEST Guess using data collected.I would love it if it was a dead cas or coil.

in the work shop today our hino refuses intermitantly to fast idle.we have a hino scan tool that is next to useless.we have 2 other scanners.
so we spent 2 hours labour with no wiring diagram--not available.have to use other vehicles to test.Diagnostic soldiers- throwing parts in hope

the switch tests fine back to the ecu.the only cancel for fast idle is gear selection. no fault to ecu.
intermitant history logged of clutch switch fault.common with hino cruise control.currently operating.

how have we got to the point that its off to the dealer under new warranty [hopefully] with 4 hours labour + down time.
we purchased a product that was promised to be cheeper to operate and fully backed service.

but still every odd time its started the fast idle wont operate--used to operate PTO crane.

my last employer would stand there and say show me what the problem part is-spend days pulling stuff apart to find one fix all issue-then complain that the customer wont pay,knowing that the vehicle had been to other non repairer and it was name your price for fixing it deal.

in the 80's in a multi francise dealer we not only had electronic parts as test units but we also had complete cars to rob or test parts.
stuffed if i know how little country dealers--small work shops delt with new mindless tech improvement [humour].I know the phone rang often and you help as many in those days as you could---not happening now.

I read in a trade mag and we had a visit from holden club.rep-holden is looking at helping nongenuine repair workshops-----return to the 90's?

last few weeks the local transpot driver came to the shop to ask what i was doing with a few dead AU falcon.he had been to mechanics-over 18 months-electricians-and 2 dealers with his pride and joy to be told its normal for AU to stall when you turn on the A/C or the head lights to flicker or if you buy a new UTE then you get rid of you AU wories as these are dogs.the electricians told him its best to buy a cheep au thats running and swap bits.

I told him to look an earth wires battery charge and look for dodgey wiring.and see me if he need bits.

came in today and thanked me-the electrician said it had a tps and map code.so he swaped the manifold from a $300 car with the engine loom.
the gasket was missing in spots.then on the other side he noticed that the earth battery cable was attached to the engine and not the body.

carton beer in order.