Back to basics. Why won;t my car crank over faster?

[marc_scirocco at sympatico.ca (marc_scirocco@xxxxxxxxxxxx)]

Measure how many volts at the battery posts AND at the starter terminals while you crank. This will tell you if you draw too much current for what the battery can provide.

How much resistance did you actually measure?

Something to think about, if you paid 30 buck for a multimeter it will not be acurate to measure just about anything below around 2 ohms.

Best to measure the voltage at the starter and at the battery, then you know how much voltage you lose across your wiring.

Am I repeating myself here? sheesh

Maybee the battery is not strong enough to provide all the juice.

Maybee the starter is about to die and is drawing too much current.

If you need electrical ideas, I am home tomorrow. Give me a ring and we'll think about something.

Cheers.

Marc

> 
> De: "C Boyko" <roccit_53@xxxxxxxxxxxxxxxxxxxxxxx>
> Date: 2007/05/02 mer. PM 10:33:55 EDT
> ?: <scirocco-l@xxxxxxxxxxxx>
> Objet: Back to basics. Why won;t my car crank over faster?
> 
> Okay, so officially my car cranks at a blistering 150rpm. Too slow I think,
> should be 200-250 according to my reference (Dan B.). So, what are the
> basic bare bones reasons for this sort of thing? I have done the following;
> Checked for resistance in the large wires to the negative side of the
> battery and sanded them as well as their contact patches, reinstalled
> good'n tight. (battery to frame/frame to tranny)
> Verified that I have the wires on the starter correctly, and that they are
> in good condition.
> Cleaned and tightened the clamps on the terminals/cleaned the terminals
> (all ths stuff looked good anyway)
> Cam and ignition timing seem fine
> Battery's at 12.6V, and has always been a good one, I'll try swapping it
> for a different one.
> 
> 
> This car started happily a week or so ago on MSnS, I've gone over all kinds
> of things with Dan and it seems to check out fine, there's 5V to the hall
> sender, fuel pump is going, all that but the cranking speed is just not
> where it should be. Which may have nothing at all to do with MS.
> 
> So what's left besides swapping in a different starter? Throw all the wild
> stuff at me too, it may be something obscure, or dead stupid. Thanks.
> Cathy
> 
> 
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