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Mechanic Martyn
Mechanic Martyn, Mechanic
Category: Car
Satisfied Customers: 1002
Experience:  Advanced trade certificate in Automotive engineering
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1978 VW Bug: car wont start..ignition starts..cools

Customer Question

I have a 1978 VW Bug and the car wont start after aXXXXX The new Blue Bosch ignition coil is very hot and car starts only after the coil cools. Whats wrong>
Submitted: 6 years ago.
Category: Car
Expert:  Mechanic Martyn replied 6 years ago.
Hello and welcome to Just Answer.
It could be the wrong coil. It may be a ballast coil when the car requires a non ballast type.
The coil overheats and reaches saturation and dies.
You need to replace it with the correct coil.
Mechanic Martyn
Customer: replied 6 years ago.
I had an identical blue coil in the car for several years when this situation ocurred and had it replaced it with a new one. Now this condition reocurred so it does now apprer to be the coil. A VW mechanic did the installation.
Expert:  Mechanic Martyn replied 6 years ago.
The coils differ slightly in their internals rather than their externals.
If the coil is drawing too much current it will get hot and fail. It could over stress the other components of the system and cause them to fail prematurely too.
Get the mechanic to have another look at it. He should fix it for free.
Mechanic Martyn
Customer: replied 6 years ago.
Hi, we confirmed that the new coil was identical to the old one in configuration and the old one had no problems for several years. It appers the new one failed for the same reason as the original. Problem must be elsewhere and my question is where?