Heater Core Reliability - Page 2 - Maserati Forum
View Poll Results: Have you ever had a 4200 heater core issue & at what mileage
YES, 20K or less 0 0%
YES, 20K-40K 9 20.00%
YES, 40K-60K 4 8.89%
YES, 60K-80K 3 6.67%
YES, 80K-100K+ 2 4.44%
NO, 20K or less 4 8.89%
NO, 20K-40K 12 26.67%
NO, 40K-60K 5 11.11%
NO, 60K-80K 5 11.11%
NO, 80K-100K+ 1 2.22%
Voters: 45. You may not vote on this poll

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post #16 of 41 Old 02-10-2018, 12:46 AM
 
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Hey Jacek, take it easy man, you did not buy a Maserati for the build quality...I mean it's not that bad but it will never live up to the German made cars.


George (stable below from oldest to newest)


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Maserati GT 6 spd 2003 and 50,000 kms (31,000 miles) - yes, the heater is shot and I did the bypass as per Dave's instructions; running A OK :-)
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post #17 of 41 Old 02-10-2018, 12:58 AM
 
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No worries- I got what I paid for. Love the car. But, we must acknowledge that very few people will put up with that. It also hurts the company bottom line....
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post #18 of 41 Old 02-10-2018, 01:53 PM
 
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I actually have never replaced one, but we work on way more M139 and M145 cars...Jason

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post #19 of 41 Old 02-12-2018, 01:53 AM
 
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I am the fourth owner of a 2006 GranSport with about 75,000 miles on the odometer. There was no record of the heater core replacement however I do not have any records before 2010 when the car was probably leased by the first owner. I prepared a little "Emergency Core Bypass Kit" with clamps, hose, tools, etc. and placed it in a big ZipLock bag hidden in the Spare Tire well. I am hoping that having the bypass kit ready will bring me good luck and I will never need it....kinda like insurance.
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post #20 of 41 Old 02-12-2018, 04:01 AM

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Quote:
Originally Posted by jacek View Post
There is definitely an issue with the heater core. I have never had a car that would start leaking at 37k miles. No matter how old. The heater core is one of the poor quality components in these cars. There is a long list of those. Much longer than on a typical car. I don't mind most that much but this one I do. Totally unnecessary, massive undertaking to replace it. Oh well...nobody said it was easy....
You have never had a car... ?

For what it's worth, my 1980 Mercury Capri got a rotten heater core; it was 11 years old at the time and had about 35K miles. But I think it was much easier to replace than on a Maserati 4200!

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post #21 of 41 Old 02-12-2018, 06:08 AM
 
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Originally Posted by SeanFulop View Post
You have never had a car... ?

For what it's worth, my 1980 Mercury Capri got a rotten heater core; it was 11 years old at the time and had about 35K miles. But I think it was much easier to replace than on a Maserati 4200!
I had 5 fox body mustangs (including 83 capri) and never heater core problem. There you go...
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post #22 of 41 Old 02-12-2018, 05:14 PM
 
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Sorry, But I would rather have the Maserati with it`s double A arm suspension front and rear compared to a live axle and struts in the front...We can fix the suspect heater core, you can`t make up for just a flat out terrible chassis in the Mustang. I have instructed in a few at tracks around the south....F-ing scary! Jason

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post #23 of 41 Old 02-12-2018, 05:21 PM
 
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Originally Posted by [email protected] Enzo`s Atlanta View Post
Sorry, But I would rather have the Maserati with it`s double A arm suspension front and rear compared to a live axle and struts in the front...We can fix the suspect heater core, you can`t make up for just a flat out terrible chassis in the Mustang. I have instructed in a few at tracks around the south....F-ing scary! Jason
Scary is right. That heavy V8 engine hanging over the front axle made it good just about only for gravel road traction. I rolled one and banged another one into a barrier in the mountains....
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post #24 of 41 Old 02-12-2018, 11:57 PM
 
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All cars have some shitty parts on them based on my experience...You either deal with them or find another car you love that has other shitty parts...pick your poison......Jason

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post #25 of 41 Old 02-13-2018, 12:17 AM
 
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Also the newer cars are so packed with"stuff" that servicing or replacing anything is a hassle... I miss the times of easy access to all major components. Right now I'm rewiring my restomod '73 Firebird Formula. No problem- child's play...
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post #26 of 41 Old 02-13-2018, 12:59 AM
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All cars have some shitty parts on them based on my experience...You either deal with them or find another car you love that has other shitty parts...pick your poison......Jason

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post #27 of 41 Old 02-13-2018, 03:38 AM

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All cars have some shitty parts on them based on my experience...You either deal with them or find another car you love that has other shitty parts...pick your poison......Jason
So true -- there's always some kind of design flaw and/or crappy part somewhere. As long as this is not deep inside the engine or drivetrain you are in luck and should just shut up and fix whatever it is. Like when my son broke the interior door handle on my QP, I just smiled and said "don't worry son, it's a design flaw, they all do that!" $500 later it's all fixed and I have to remember to unlock the doors before he starts pulling the handles...

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post #28 of 41 Old 02-17-2018, 07:35 AM
 
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Youíre all dreaming if you donít think yours will fail. Itís just a shi!!y stupid design.
Attaching the plastic end caps to the center aluminum core (with GLUE) appears to be the problem.
The coolant eventually breaks it down. Ours failed, on our 2003, two years ago this April with about 32,000 on the odometer.
We replaced ours with a ...should never fail Brassworks, for around $600.00
I liked the idea that it would never fail again (of course the hoses could)
I think to spend 15-20 hours of labor taking it out and putting the new one in ...
OR spending a few thousand on labor...
To put another crappy OEM similar model is silly, but maybe thatís just us.
BTW for you amateur or even skilled mechanics who think you can do it in a few hours...GOOD LUCK.
Iím laughing at your hubris already.
There is a reason why dealers charge the quoted numbers, and the independents who have done it. (For the labor alone)
I believed the time estimates...from others before us (my wife and I), and they werenít lying.
Which reminds me, a second person/set of hands is almost essential at times.
If it took a couple hours, then I as well would have put another OEM version in (Maserati /Saab etc)

For you 2004, 2005, 2006 owners...
As Chet said in Weird Science
Time to pay the Fiddler

2003 Rosso Bologna Coupe GT. My wife's car- YES she drives a stick. Cuoio interior, BMC air filter, Brassworks heater core, TUBI exhaust. Giggity!
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post #29 of 41 Old 03-25-2018, 03:29 AM
 
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Heater Core Reliability

My 2004 coupe has 173k miles. The heater core was fine up until it failed absolutely catastrophically and emptied the entire cooling system contents into the interior in about 45 seconds. This happened last summer at about 172k Miles. I have it bypassed for now since i donít generally drive the car in the winter.


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post #30 of 41 Old 03-28-2018, 01:57 AM
 
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I have 50,000 miles on my 04 coupe gt. I bought it with 25,000 4 years ago. After I got the car home and was looking around I found some anti freeze up on the insulation/pipe from the heater core, nothing on the carpets. I made a bypass kit and put it in the trunk for the dreaded failure, side of the road fix. Still has not failed after 25,000 miles (knock on wood).

ETA Maybe the previous owner already fixed it and what I found was residual anti freeze.
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