Hot start/Slow cranking problem

[d8v8]

Having read the hot start problems related to starter motors can anyone help me on this one?

I have a 94 Griff 500 which ocassionally when hot is very very slow cranking. When I say slow, I mean its slow enough to sound like the battery is flat (battery is fine) but gradually winds up and starts. Its is worrying enough to make me think its gonna let me down big style soon!

When starting from cold all is fine.

I have had the starter replaced but it is still apparent. When it happens it is normally as hot as it can be (fans on), say after a good run of 30 mins or so and pull in for fuel.

[joolzb]

Can't help I'm afraid, sorry. Not that it's much help but the problem does sound different to the thread I posted recently which was probably down to a solenoid problem.

[d8v8]

Thanks for your reply Joolzb, Its really baffling me this one.

CMon gang, someone from the Griff hardcore must be able to wave a wand for this new TVR owner.

Must say, the grin factor is priceless

>> Edited by d8v8 on Monday 26th January 19:26

>> Edited by d8v8 on Monday 26th January 19:27

[heliox]

Sounds like the starter-motor is on the way out or it could be the fuse connectors underneath the car need cleaning up.

Try a search for starter-motor, im sure you'll get more info as it seems a common problem especially in the summer months when temps are high.

h

[T88CAN]

Id go for heat soak on the starter motor, try some form of insulation on the starter to check this theory out, Tony

[d8v8]

Thanks all, I am assuming the new starter would rule this problem out but will check fuses and earth points I think.

Time to buy the bible I guess

[PlenumPete]

d8v8 said:

Thanks all, I am assuming the new starter would rule this problem out but will check fuses and earth points I think. Time to buy the bible I guess

I had the same problem on an early Griffith and it was solved by fitting higher current rated cabling in the starter circuit.

[wixer]

Check your starter motor bolts are tight. My engine has just been stripped and it was found that one of the bolts had been sheared off and the other was loose, as were all the bell housing bolts. I too had a warm starting problem and I've put it down to the fact that as the starter was loose, it wasn't making a good enough earth to the engine, especially as the area was covered in oil. Worth checking all these small things first, before spending any cash.

[simon.b]

Some modified high performance engines do tighten up when hot or at least this used to be the case thinking back to my old rallying days. I wouldn’t have thought this likely on one of our V8’s but has the engine been modified.

Cheers,

Simon.

[david beer]

My 99 500 does just the same, really slow when hot, just forgot about it, it always fires up.If i had a bit more time i would probably take a look. I do have a tip for the "wont crank when hot" though, worth a go.
The mod is to make sure you have max voltage at the solenoid, i used a relay in the footwell so the solenoid now takes its max. Take was 6amps standard and now 12 amps, so hopefully when the starter gets hot and "sticky" the new supply will throw the solenoid like it should.


>> Edited by david beer on Wednesday 28th January 18:45

[d8v8]

Cheers all, I am minded to take the stance of the classic mechanics line for 'intermittent' faults and "let it develop sir" particularly after the last post.

Mind you with the snow due it may be time to have a fiddle and check some of the other things mentioned here.

Thanks again y'all