Heater Core Reliability - Page 3 - 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 #31 of 41 Old 04-05-2018, 03:40 AM
 
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would shoring up those plastic end caps with jb weld or fiberglass or some such help prevent failure? Anyone try something preventative?
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post #32 of 41 Old 04-06-2018, 05:26 AM Thread Starter

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IMHO, if you go to the trouble of getting to the heater core, it's time to go all metal.
KTBD
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post #33 of 41 Old 04-07-2018, 05:01 PM
 
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That makes sense. I guess they are a big pain to get to.
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post #34 of 41 Old 04-12-2018, 04:58 AM
 
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The heater core started leaking on my '03 Coupe at just shy of 60k. Really disappointing. Just not in my budget to repair and the winters aren't severe in central Virginia, so I had my guys bypass, and I just don't get to enjoy it for a few months...

'03 Coupe GT 6-speed, Tubi
'86 Alfa Romeo GTV6 (a pair)
tres Hondas: '02 Fireblade; '86 and '07 Interceptors
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post #35 of 41 Old 08-18-2018, 04:16 PM
 
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Quote:
Originally Posted by kissthebricksdad View Post
IMHO, if you go to the trouble of getting to the heater core, it's time to go all metal.

KTBD


How hard is it to get to it to do the bypass? If not too bad what about some JB Weld smeared all over the connectors where they tend to fail as a preventative measure? Thoughts?

I donít want it to happen to mine!!


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post #36 of 41 Old 08-18-2018, 04:56 PM
 
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Quote:
Originally Posted by campipilot View Post
How hard is it to get to it to do the bypass? If not too bad what about some JB Weld smeared all over the connectors where they tend to fail as a preventative measure? Thoughts?

I donít want it to happen to mine!!


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Bypass is easy to get to from the engine bay. Craigwaterman.com has the guide on his web site.
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post #37 of 41 Old 08-18-2018, 11:33 PM
 
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Been following this (and a lot other..) threads as a newbie owner.

Looking at the posts, would I be correct in assuming that this issue mostly affects only earlier Coupes (not QP?), of the 4200 vintage? Was this issue fixed in later cars?

Thanks,
Hans.
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post #38 of 41 Old 08-19-2018, 01:51 PM
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Not fixed on latter cars. No new part was made.

I can't see JB Weld being a solution either as it's just too big an area. And having spent all that cash getting in there, do you want to risk doing it all over again?

C

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post #39 of 41 Old 02-02-2019, 02:28 PM
 
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heater shut down

I have now for a few months a 2002 spyder with 29K miles on it. I bought it in the US in 2018. The seller never told me the central door lock is not working. Now it is shown the heater box is leaking and the relais is dead because of the leak. I think it is sold with this problem to me and i have now to repair it. Not a happy camper now, the repair is not sheap. I think i will do it myself with de replacement of the Saab core. Oh, i live in Europe Neherlands and yes, there are not much spyders in Europe. Everybody knew that the build of this car was not the most perfect one, and ttha is a understatement. But who cares it got 400+ horse, i drove it already with almost 300 km per our on the start and running way in the Netherlands
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post #40 of 41 Old 04-26-2019, 05:15 PM
 
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Just replaced the core in my Spyder - had been misting the windscreen for several weeks. Used a Saab ONS core as recommended by MAS master mechanic - now perfect!
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post #41 of 41 Old 05-15-2019, 01:13 PM
 
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Quote:
Originally Posted by jacek View Post
Bypass is easy to get to from the engine bay. Craigwaterman.com has the guide on his web site.
Can you link the guide here? Thanks!
Nevermind, found it: http://craig-waterman.com/?cat=37
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