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Rev dip issue

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srhutch
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Rev dip issue

Post by srhutch » Thu Sep 07, 2017 8:16 pm

Dealers don't like bring challenged do they.

Mine know what I'm like now so as long as I deal with somebody I know I get decent service.
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Sam1977
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Rev dip issue

Post by Sam1977 » Thu Sep 07, 2017 9:12 pm

srhutch wrote: Thu Sep 07, 2017 8:16 pm Dealers don't like bring challenged do they.

Mine know what I'm like now so as long as I deal with somebody I know I get decent service.
They'll get used to me! Its got its own parking space inside their workshop now!!

But seriously I am spending hours now reading up on diagnostics and how air intake temp, MAF, O2, TPS, ICV etc. all can be tested - as someone else answered me already on my question about TPS testing using live-data its probably outside of the ability of the kit I have, but these people MUST surely have the ability to test all these components and figure out which one is not giving precisely the right data? My mate summed it up quite well when we looked around the parking lot - loads of cars in for service, brake swaps, plug-it-in-and-change it type repairs - why would they really bother with mine?! Easier just to fob me off. Well lets see what happens next - I suspect what will happen is they will change the plugs, do the detailing work and tell me there's nothing else wrong with it.

So time for a plan B i think.
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AndyBeech
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Rev dip issue

Post by AndyBeech » Thu Sep 07, 2017 9:39 pm

Do BMW actually do detailing work that's beyond wiping it over with a gritty chamois?! :o Never heard of them being used to detail, do they actually have machine polishing equipment?!
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Rev dip issue

Post by Sam1977 » Thu Sep 07, 2017 10:02 pm

AndyBeech wrote: Thu Sep 07, 2017 9:39 pm Do BMW actually do detailing work that's beyond wiping it over with a gritty chamois?! :o Never heard of them being used to detail, do they actually have machine polishing equipment?!
:D know what you mean!! Was watching a guy slopping suds all over someone car with a broom today!!

This one has a BMW bodyshop who do insurance repairs separate from the main garage

My car has what look like something has sprayed on it on one half of the bonnet and wing, run off and then slightly eaten into the paint. You can only see it under sunlight if you move to the right angle but since rest of the car is immaculate I wanted to get this done. Tried tiny area with a bit of T cut but didn't shift it and although I have a polisher I didn't fancy risking it!
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Rev dip issue

Post by mad4slalom » Fri Sep 15, 2017 11:43 am

Very frustrating to get techs, dealers , service desk personel or any one else to Listen to what you are saying, often the desk staff , m or f ,know nothing of mechanics or tech stuff so relay totally misunderstood info to the service guy. Who again only wants to do brake pad changes or inspections that are robotic and he doesnt need to think out of the box, the hour test is really an excuse to get out of the garage for an hour, go for a cruise in a m car , probably rag your pride and joy whilst he is at it and then brings it back and says nothing wrong mate. Had this recently on one of my vans for a warranty issue, they sent a valeter out for an hour to see if the lights cam on ! Ffs! I bet they billed renault for a tech tho, same scenario. Nothing wrong mate , and they didnt tell me the t**t backed into something and smashed my rear light!💥😤 hope you get it sorted mate 👍

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Rev dip issue

Post by Sam1977 » Fri Sep 15, 2017 4:42 pm

Dear all

Finally got the car back today. The problem would appear to be solved. All they did was replace the non-OEM spark plugs for OEM spark plugs. Now from warm idle pulling away with light throttle it no longer wants to stall.

Unfortunately they couldn't machine polish out the tiny splatter marks in the paint which are visible in certain angles in sunlight. However they didn't charge me for this: interesting one - they said because when I brought the car in I said "Sort these marks out" and they suggested they would easily polish them out they won't charge me. If I had told them the solution was to polish them out and do that they would have charged me! Anyway its going back to their body-shop next month to have the bonnet resprayed. Estimated cost 400 euros but they will give me a written quote before hand.

I'll keep an eye out for the weekend and see if any problems return but fingers crossed in my case it seems to have been a simple issue

Thanks everyone for all the advice as usual
Sam.
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Porsche 911 Turbo S / Boxster S
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Hyundai Accent Copa (Andalucia Cup) x3
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Rev dip issue

Post by ph001 » Fri Sep 15, 2017 4:49 pm

I'm amazed that was caused by plugs. Learn something new every day.
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Rev dip issue

Post by Sam1977 » Fri Sep 15, 2017 5:07 pm

ph001 wrote: Fri Sep 15, 2017 4:49 pm I'm amazed that was caused by plugs. Learn something new every day.
Hi - to be honest I share your amazement! I would never in a million years put that issue down to plugs. I can only report back as I have the car now. So my caveat would be I have only driven it once for about 20kms since. Maybe the demon will return tomorrow .... I hope not. I will of course report back so nobody is sent in the wrong direction by my "solution" if it turns out not to be in fact a solution.

Sam
BMW Z4M INTERLAGOS BLUE
Other tin:
Porsche 911 Turbo S / Boxster S
BMW E60 M5 / E38 740i / E46 320d / E36 316i / E46 330Ci (Time Attack car)
Mercedes SL500
Hyundai Accent Copa (Andalucia Cup) x3
Audi A6 Avant x2
Nissan Navara
Fiat Punto Sporting

D4dawg

Rev dip issue

Post by D4dawg » Fri Sep 15, 2017 11:53 pm

Thing is people think a plug is a plug

They have running temps and set working range plus pre gapped and different cores
So if not OE used God knows what some Muppet had put in it as too hot or too cold a plug it wont fire how the cars set up to do:)

Never will understand why people buy performance cars with a budget to run it on of a 1ltre car

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ph001
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Rev dip issue

Post by ph001 » Sat Sep 16, 2017 5:54 am

Maybe the OP can tell us what plugs were in there before?
2007 E85 Z4 3.0Si manual :driving:
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Rev dip issue

Post by D4dawg » Sat Sep 16, 2017 12:27 pm

ph001 wrote: Sat Sep 16, 2017 5:54 am Maybe the OP can tell us what plugs were in there before?
Good call

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Rev dip issue

Post by Sam1977 » Sat Sep 16, 2017 10:18 pm

Hi guys sorry I can't I should have asked but didn't. In my defense I literally arrived back to Gibraltar at 12 and was picked up my a friend went straight into Spain to pick the car up. Have just checked now and they didn't leave the old plugs in the boot.

On a good point I drove the car this morning gave it a good work out and no issues again

Since it's going back again for front end respray soon I will ask and see if he remembers
BMW Z4M INTERLAGOS BLUE
Other tin:
Porsche 911 Turbo S / Boxster S
BMW E60 M5 / E38 740i / E46 320d / E36 316i / E46 330Ci (Time Attack car)
Mercedes SL500
Hyundai Accent Copa (Andalucia Cup) x3
Audi A6 Avant x2
Nissan Navara
Fiat Punto Sporting

D4dawg

Rev dip issue

Post by D4dawg » Sat Sep 16, 2017 10:28 pm

Good good

Lower
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Rev dip issue

Post by Lower » Sun Sep 17, 2017 9:34 am

I bet they reset the dme too.

That clears the problem for a while and then it gradually comes back as the ecu learns to adapt to whatever is causing the problem in the first place.
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Rev dip issue

Post by Sam1977 » Thu Sep 21, 2017 7:43 pm

Lower wrote: Sun Sep 17, 2017 9:34 am I bet they reset the dme too.

That clears the problem for a while and then it gradually comes back as the ecu learns to adapt to whatever is causing the problem in the first place.
Maybe. But its been good for a week now so it must be a slow learner like me!! :D
BMW Z4M INTERLAGOS BLUE
Other tin:
Porsche 911 Turbo S / Boxster S
BMW E60 M5 / E38 740i / E46 320d / E36 316i / E46 330Ci (Time Attack car)
Mercedes SL500
Hyundai Accent Copa (Andalucia Cup) x3
Audi A6 Avant x2
Nissan Navara
Fiat Punto Sporting

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