Stater amp draw?

Ok guys I have car that "sounds" slow when starting. Car starts and runs ok everytime. I have tried to find the spec for starter draw but no dice, I did find a spec on NAPA auto parts and just wanted some input.

Battery 12V Battery 730 CCA Amps cranking (stater) 260

NAPA's site list two starters a 1.4 KW and 1.7KW

1000 X KW / Volts = Amps

1000 X 1.7 / 12 = 141.66A

or

1000 X 1.4 / 12 = 116.66A

Math look ok? Looks like a bad stater.

BTW: The car is a 2006 Chrysler 300 HEMI C AWD

Thanks Paul B

If I read correctly, I see 260 amps to the starter? If so, thats too much. Generally, you will get a spike to around 250 as the starter accelerates, but it should settle down somewhere in the 125 to 150 amp range as its "cruising".

This is what I was thinking ^^

I am using almost 30% of the CCA and today is 67*F, this draw sounds much to hi to me.

Paul B

Streetwiseguy wrote: If I read correctly, I see 260 amps to the starter? If so, thats too much. Generally, you will get a spike to around 250 as the starter accelerates, but it should settle down somewhere in the 125 to 150 amp range as its "cruising".

I'm not doubting this, just questioning. That's pretty much the spec I always was taught, but that was way back in the 90's. Today's engines are a little higher compression, not sure if that'd make much difference. In theory the starting and charging systems would have been uprated to match, but in theory VW's would be very reliable. Theory doesn't care though.

DrBoost wrote:

Streetwiseguy wrote: If I read correctly, I see 260 amps to the starter? If so, thats too much. Generally, you will get a spike to around 250 as the starter accelerates, but it should settle down somewhere in the 125 to 150 amp range as its "cruising".

I'm not doubting this, just questioning. That's pretty much the spec I always was taught, but that was way back in the 90's. Today's engines are a little higher compression, not sure if that'd make much difference. In theory the starting and charging systems would have been uprated to match, but in theory VW's would be very reliable. Theory doesn't care though.

Very generic numbers. Also- engines have higher compression, but they have lower internal friction and the starters are also more efficient. Honestly, I go by a combination of "It cranks too slow, sounds funny, and I know the battery and cables are good. The draw looks higher than I remember from tech school."

Some where in my tool archives I have a starter draw tester. Simply held it on the cable to the starter and had some one activate the starter.

another simple test is to read the battery voltage while cranking. 10 v is the minimum. Of course that could indicate a weak battery.

Streetwiseguy wrote:

DrBoost wrote:

Streetwiseguy wrote: If I read correctly, I see 260 amps to the starter? If so, thats too much. Generally, you will get a spike to around 250 as the starter accelerates, but it should settle down somewhere in the 125 to 150 amp range as its "cruising".

I'm not doubting this, just questioning. That's pretty much the spec I always was taught, but that was way back in the 90's. Today's engines are a little higher compression, not sure if that'd make much difference. In theory the starting and charging systems would have been uprated to match, but in theory VW's would be very reliable. Theory doesn't care though.

Very generic numbers. Also- engines have higher compression, but they have lower internal friction and the starters are also more efficient. Honestly, I go by a combination of "It cranks too slow, sounds funny, and I know the battery and cables are good. The draw looks higher than I remember from tech school."

Yeah, this is what I do. I stopped using the given specs after a few years or wrenching.