Problem incorrectly identified by garage. What happens now?
Problem incorrectly identified by garage. What happens now?
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Discussion

mcdk2

Original Poster:

137 posts

262 months

Monday 17th November 2014
quotequote all
Hi, I have a Renault Megane with a starting problem that was incorrectly identified by the garage. Could anyone give me some advice please? I'm in a pretty bad situation here. Thanks.

Problem identified by garage as dephaser unit, which would an expensive fix at around £500.

Conversation:
Me "Is this definintly the problem? Is there anything else that it could be?"
Garage "This is the problem, there is nothing else"
Me "ok, go ahead"

The garage convinced me that they should also fit a dephaser solenoid which could cause dephaser failure again. Also cambelt and pump whilst they were in there.

Total £726 paid in full. Receipt states: “investigate problem with running and bad starting. Fault diagnosed to be dephaser fault and vvt control module. …fixed…etc”

Next morning, car would not start. Identical symptoms.

So, they have incorrectly diagnosed the problem and charged me a lot of money to do the wrong work. They claim that the car now runs better but it ran perfectly ok before, other than the real problem. Assuming they can now identify the real problem, who pays for it and what should be done about all of the incorrect work? In my view, this is a risk that a professional/company takes on. If I did my work incorrectly then I (my company) would pay (and I would get a telling off or a warning), not the customer.

Thanks again.

liner33

10,861 posts

232 months

Monday 17th November 2014
quotequote all
Whats a dephaser unit ?

SarGara

415 posts

206 months

Monday 17th November 2014
quotequote all
It's present on Renaults VVT engines, something to do with camshaft and oil? Im sure someone more technical will be along to explain it but as you've found out the expensive way, this will not stop your car from starting it just makes a noise when its on its way out.

mcdk2 out of interest, what are the symptoms of your issue?

rallycross

13,757 posts

267 months

Monday 17th November 2014
quotequote all
The problem with fixing faults like this is you don't know for sure what it is the fault codes dont give them an exact solution just symptoms.
A good garage will start off with the lowest cost possibilities before going for the expensive option like this.

I would expect them to check/change the crank sensor and cam position sensors before doing the above (TDC signal) can cause intermittent start and is not easy to detect.

Buff Mchugelarge

3,316 posts

180 months

Monday 17th November 2014
quotequote all
The dephaser pulley won't have any affect on starting.
It essentially controls the cam change when the revs rise.

I imagine the actual problem is more to do with a coil pack, cam/ crank sensor but hasn't logged codes.
Mr mechanic plugs his computer in sees a de phaser code and gets a hard on for the £££ he'll make.

TA14

14,332 posts

288 months

Monday 17th November 2014
quotequote all
Go Back to the garage and ask whether they will now correct the problem for free or for a substantial discount if it turns out to be a very expensive fix. If they say no then go elsewhere, permanently.

thecremeegg

2,099 posts

233 months

Monday 17th November 2014
quotequote all
I'd put £50 on it being the crank sensor - had the same on my Clio, cost a pittance to fix.
This is what annoys me about garages, like you say if I cock up at work the company pays and that's that. Garages expect you to foot the bill for their incompetence which makes me angry.

Calza

2,068 posts

145 months

Monday 17th November 2014
quotequote all
What age / mileage is your car?

Just thinking of a silver lining with getting your cambelt changed..

mcdk2

Original Poster:

137 posts

262 months

Monday 17th November 2014
quotequote all
Thanks very much for the replies so far guys. The arrangement is that I call the garage this afternoon and see what they have found.

Original symptoms that were all reported to the garage:
- Cut out once whilst driving, engine fan on, low battery warning light on, buzzer sounding. Eastgate recovered the car.
- Did not start, low battery light, usually started after 45minutes of trying. This occurred three times before the work was done.
- Once, the engine stuttered at about 40mph
- Whistling sound whilst changing gear (like a turbo sound but the car doesn’t have one)

Are you absolutely sure that the dephaser unit error can't prevent the car from starting? If this is the case then what is states on the receipt is not correct.

steveo3002

11,215 posts

204 months

Monday 17th November 2014
quotequote all
i guess you find out what the garage is like when you go back

id expect some bluff about that part was about to fail anyway and they were right to do it , mustve been that and something else about to fall off and give us some more money

mcdk2

Original Poster:

137 posts

262 months

Monday 17th November 2014
quotequote all
Cambelt was changed in 2012. It had about 20k on the new one.

Car is a 2006 megane 1.6 petrol with about 85k (roughly) on the clock.

mcdk2

Original Poster:

137 posts

262 months

Monday 17th November 2014
quotequote all
The garage just called me.

They say that it is the alternator overcharging. He has a photo of it at 15.22V and it sometimes charges at 13V. He claims it to be an intermittent charging problem. He says that as a gesture of goodwill he will fit it for free and alternator is £189+VAT. He also said that it might not fix the problem and that other parts might have been damaged by the overcharging.

He also said that the dephaser problem CAN cause starting problems.

I said that I need to think about it and will call him back today.

Any thought ?!?

monthefish

20,467 posts

261 months

Monday 17th November 2014
quotequote all
I had this recently...
But the garage were decent and noble and fixed the issue without any quibbles:
They collected the car, left a courtesy car, fixed the actual problem and credited me for the cost of the part they changed incorrectly (and did a few other odd jobs also).
It's this kind of response when things go wrong that retains customer loyalty.

(B for BMW in Clydebank if anyone's interested)



It will depend on the garage though. Good luck. As long as you didn't say "I've got a problem with XXXXXX, I think it's because of a faulty YYYYYY"
(easily done if you're into cars and you're trying to be helpful, but in the end, it's better to leave the diagnosis to the garage)

TA14

14,332 posts

288 months

Monday 17th November 2014
quotequote all
mcdk2 said:
Are you absolutely sure that the dephaser unit error can't prevent the car from starting?
That's a red herring: either way the dephaser is what they diagnosed and they stated that the problem has been fixed. which it hasn't.
mcdk2 said:
Receipt states: “investigate problem with running and bad starting. Fault diagnosed to be dephaser fault and vvt control module. …fixed…etc”
Have a chat with them and see if they will rectify their mistake to the tune of you not being out of pocket. I wouldn't throw good money after bad.

steveo3002

11,215 posts

204 months

Monday 17th November 2014
quotequote all

mcdk2 said:
The garage just called me.

They say that it is the alternator overcharging. He has a photo of it at 15.22V and it sometimes charges at 13V. He claims it to be an intermittent charging problem. He says that as a gesture of goodwill he will fit it for free and alternator is £189+VAT. He also said that it might not fix the problem and that other parts might have been damaged by the overcharging.

He also said that the dephaser problem CAN cause starting problems.

I said that I need to think about it and will call him back today.

Any thought ?!?
overcharging isnt right, but i cant see it being the cause of non starting

rallycross

13,757 posts

267 months

Monday 17th November 2014
quotequote all
steveo3002 said:
overcharging isnt right, but i cant see it being the cause of non starting
The alternator will not cause intermittent not start.
They sound like they don't know what they are doing.

Crank sensor and or camshaft sensor is the next thing they should change alternator will not stop it from starting.



BoRED S2upid

21,070 posts

270 months

Monday 17th November 2014
quotequote all
mcdk2 said:
Cambelt was changed in 2012. It had about 20k on the new one.

Car is a 2006 megane 1.6 petrol with about 85k (roughly) on the clock.
Well they have screwed you on the cambelt that's for sure it wasn't due for another 40,000!

SarGara

415 posts

206 months

Monday 17th November 2014
quotequote all
BoRED S2upid said:
Well they have screwed you on the cambelt that's for sure it wasn't due for another 40,000!
Nvm reading fail.

Edited by SarGara on Monday 17th November 11:23

Jimmyarm

1,962 posts

208 months

Monday 17th November 2014
quotequote all
BoRED S2upid said:
Well they have screwed you on the cambelt that's for sure it wasn't due for another 40,000!
It's standard to change the Cambelt and its tensioner/idlers if it is being removed. For the cost of the kit it isn't worth the risk of refitting the old one.

mcdk2

Original Poster:

137 posts

262 months

Monday 17th November 2014
quotequote all
They said that the cambelts can take a 'set' and if removed and refitted for the dephaser pulley replacement, and so it might not last long before failure. They only suggested the cambelt replacement. Considering the implications of a cambelt failure (broken engine), I made that call and accepted their suggestion.
I don't know if their is any truth in the risk of belt failure but that isn't the main focus of my attention now.

Just to repeat, my receipt states: “investigate problem with running and bad starting. Fault diagnosed to be dephaser fault and vvt control module. …fixed…etc”. They were confident enough to state that in writing but now say that anything might have been damaged by overcharging. So I don't know where the end of this problem will be.

Car cost me £2000 from a second hand dealer, in March.

Thanks again, your comments/suggestions are all very helpful