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im sure youll see the positivity in unmac's advice if you try. Anyway, leave I REALLY HOPE MY CAR IS FIIIIIINEEEE. I will relay all the info i get from mclaren troy asap
Has any of the crack mechanics solved your issue? LOL. No one is going to solve your issue other than the Mclaren tech's. If you were out of warranty and wanted to DIY then what you are posting is relevant (you're going to need other people's help and even then it will be generic and a fishing expedition. If people actually told you their buying/servicing experience with Mclarens (which they won't ) then you'll know how much credibility to give them.

I haven't gone through the entire thread since the last time I posted. However, emergency roadside service with exotic cars is not an on demand service. It can take a while. Sometimes even days. Mclaren and other marques will not ship it to another dealer of your choice on their dime. it goes to the closest dealer to where the car is.

Just too much confusion being given by people on these forums.
 

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Discussion Starter #62 (Edited)
Has any of the crack mechanics solved your issue? LOL. No one is going to solve your issue other than the Mclaren tech's. If you were out of warranty and wanted to DIY then what you are posting is relevant (you're going to need other people's help and even then it will be generic and a fishing expedition. If people actually told you their buying/servicing experience with Mclarens (which they won't ) then you'll know how much credibility to give them.

I haven't gone through the entire thread since the last time I posted. However, emergency roadside service with exotic cars is not an on demand service. It can take a while. Sometimes even days. Mclaren and other marques will not ship it to another dealer of your choice on their dime. it goes to the closest dealer to where the car is.

Just too much confusion being given by people on these forums.
Dear sir, last week my advisor told me that they couldnt find anything wrong with my car. Your fishing expedition analogy instantly clicked in my head and I understood my advisor. I was nonetheless very worried as i know (darn certainly) that there has been a recurring problem with my car since March. If it had not been for some of the other members I wouldve given up and made an honestly huge emotional sacrifice by selling the car (i would be honest to the buyer, car does have warranty will march). But having corroborated my secular decision with all the advice i got, i decided to check every possibility and therefore tell the dealer ill pay in order for them to check my inlet pipes (just like you did). All im trying to tell you is that this thread and many people in it, including you has indeed helped me, the help may have not fixed my car yet but sure did help me (a relative newbie) dealing with the process. Now if the dealership replies by telling me that the air inltet pipes were fine, all the advise would still seem relevant as my only other approach for me would be to bring my "diagnosed" car back for the third time and just cry in confusion. I can gather from your posts that youre a really cool mclaren owner, i urge you to not be mean towards other members as it does not suit you(lol this is my first thread why am i being like this), there are people who definitely look up to you!
I get your point about road side assistance sir but do they really take days to get to you sometimes? I guess it would make sense in death valley or sth. I digress, I honestly dont know. All my other supercars were out of warranty and never broke down but bmw and mercedes always got to me (3times) in like 1.5 hours or less and i always imagined roadside assistance to be stamped out by one main outsourcing entity. Anyway. Will also update this thread once i hear back from my dealer again!
 

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Discussion Starter #63
Update!!! Problem diagnosed. Dealer confirmed that there is a problem with the passenger side turbo air inlet baffle and is having the faulty part replaced. Guess some of you guys were on point!
 

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congrats but ask them if they can replace the other one also. not sure mac will pay for the warranty if the other doesn't have the issue YET.
and hope it didn't make contact with the compressor wheel.
 

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Discussion Starter #65
congrats but ask them if they can replace the other one also. not sure mac will pay for the warranty if the other doesn't have the issue YET.
and hope it didn't make contact with the compressor wheel.
Thank you for noting that, I will ask my SA whether he would help me take the preventative measures suggested. Car's going under the knife on Friday. Will update with more info!
 

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Update!!! Problem diagnosed. Dealer confirmed that there is a problem with the passenger side turbo air inlet baffle and is having the faulty part replaced. Guess some of you guys were on point!
And your car is completely stock, correct??
 

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Haha. I was going to say the same thing. Electrical system warranty claim would definitely be denied!

I wonder how many 720s are driving around with broken inlet pipes and owners dont even know? Esp if they dont drive the car often or hard enough to notice? I wish McLaren would add this to the recommend ed list for the annual inspection...
 

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Discussion Starter #71
Haha. I was going to say the same thing. Electrical system warranty claim would definitely be denied!

I wonder how many 720s are driving around with broken inlet pipes and owners dont even know? Esp if they dont drive the car often or hard enough to notice? I wish McLaren would add this to the recommend ed list for the annual inspection...
Also note that the few times owners do mention it to service departments, they tell them it's fine and was probably a glitch. The nature of the problem is very complex and neither party should be blamed but given the growing number of cases Mclaren should more strongly acknowledge this potential fault.
 

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Hey guys, hope everyone's healthy and well. I have a fully stock 18 720s that I bought last september from Ohio with 1200 miles for 262k. Its VIN ends with 1805. If you'd like to go straight to the problems facing my 720s, kindly skip to the next paragraph gentlemen (and the one lady who thought this was her husbands dating site). I parted with my '14 SLS for it which was a big deal for me. Although I made a hefty sum on the SLS, I willingly got into a car that I knew was a money pit because I never intended to sell it. You see, I am kind of in love with the 720s. Its presence is strong yet sublime and its speed is second to none in the segment. I am not going to discribe the 720s any further in fear of being superfluous after so many other reviews. Anyway, I am one year and 9000 miles in. I changed the oil twice and the tires once so regular maintenance have been like 8-9k. I drove it from Ann Arbor to Boston and back with no problems.and after the first six months I began to.think it's the best car ever made (very subjective reasons). But around the time the two year service interval of the car came close it started to show some problems.

You see, I had other smaller issues which I don't mind and got taken care of (mostly) and they are the following:
1) Leather moulding surrounding b pillar getting its clip broken and replaced.
2) Driver side door sill leather panel sliding down and needing to be re-glued.
3) Passenger door seat housing discoloring
and having the part replaced
4) rear badge logo peeling off and having the badge replaced.
5) Rear passenger side area rattle > still to be diagnosed :(
6) passenger mirror squeaks likes an old door > still to be diagnosed
7) Door struts giving out and being replaced
8) Vehicle shaking roughly at 193mph due to dealership in Boston putting new rear tires with 37psi on the left and 33psi on the right. Minor error by the dealership honestly. I should've known better.
The real issues that have been bothering me/bothered me are:
1) Vehicle bogs at around 7000 rpm. This is the main problem omg. I need some knowledgeable advice please. Mclaren Boston replaced the fuel pump controller and it fixed the issue from like March to June but it came back. There is usually an engine system failure light at wide open throttle and it goes away after a few more WOTs but after a while the bogging at 7k rpm starts (INTERMITTENTLY). I am finally writing today as I got it on tape actually. Video link provided. I just came back from an oil change and warranty repairs a few weeks ago in Troy, Michigan and they said the power train was fine but the problem's consistent to this day.
2) Suspension Failure. I diagnosed the problem to the accumulators as when I set the dynanics of the car to track while the car's idling on neutral, the whining suspension noise starts going crazy lol like the noise the car's suspension(?) usually makes is long-ish but now it goes, swizuswizuswizuswizuswizu... it constantly goes on with the suspension failing to adjust. If i turn of the car off without putting the dynamics back to sport/comfort (in which after a while the suspension suddenly adjusts and the noise is normal again), upon turning the car on again I am 90% of the time greeted with a suspension failure light..love it.
3)Check engine light, p420 and the 30 or whatever catalyst codes. Both cats and downpipes replaced a few weeks ago at Mclaren Troy, Michigan. Problem solved (in so far). BUT WHY

The Mclaren dealers were great. Real gentlemen, the service advisors. Just wish they were quicker, but that is not a mark against them! Love mclaren and id be delighted to get the successor as well. They respected the warranties and never treated me any different from older multiple mclaren owners. Now the worst ordeal here is having my car's performance restricted since March and with the impeding cold season, I am very sad about my first world problem of not being able to thrash around in my beloved 720s.

Anyhoo here is the link to the video please watch it carefully. Engine revs up fine on second gear but bogs around 7k rpm on 3rd. Maybe bogs twice. I only put 93 and only from Shell. Notice there no fault lights this time. Its kind of random but the bottom line is, the car bogs bad!!! I really want my car back as it were in the first six months, idc if i have to pay for it really. I just hate to see it like this.

Engine bogging at high RPM is almost definitely the coil packs. Same thing happen to me and a friend of mine. Granted we both drive 570's but its the exact same problem i had. Dealer should replace coil packs and plugs whilst theyre there and you shouldnt have the issue anymore.
 

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Discussion Starter #73 (Edited)
No problems with the coil packs sir...

Both side turbo air inlet issues resolved with updated parts. Service confirmed that Mclaren acknowledges this issue and has updated the part. They now have welded component to remedy the issue. Cant get too technical, i just dont have the knowledge.

This along with the 4 new accumulators im getting makes me feel like a fat cat :D
 

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No problems with the coil packs sir...

Both side turbo air inlet issues resolved with updated parts. Service confirmed that Mclaren acknowledges this issue and have updated the part. They now have welded component to remedy the issue. Cant get too technical, i just dont have the knowledge.

This along with the 4 new accumulators im getting makes me feel like a fat cat :D
Good to know
 

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Discussion Starter #77 (Edited)
good. sounds like the dealer did the right thing.congrats!
Thank you sir, I really am grateful for the help I got here. I have no problem recommending Mclaren Troy from my experience :) but i will still follow up with a few notes about the after service condition of the car.
 

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Discussion Starter #78
Just talked to my service advisor, the car is all set and ill pick it up after the detail. I asked him about the air inlet pipes one more time. those who had it replaced will be (or should have been) given identical looking parts but they were made by a different manufacturing process that should help reduce the chances of failure.
 

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Discussion Starter #80 (Edited)
the dacia sandero..


The problem is not fixed. This is me driving the car the very night i get it back (today). Pay extra attention from 20 second onwards. Its 4 degre3s celsius and i have corsas so the tc is on. So i use 4th gear to example the bogging so tc is not a factor in this video. Whats wrong? The turbos? Coil packs?Dealership gave the car back looking like it was kept at a construction site but they did utter "mechanically perfect" thrice with me
 
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