slow cranking when engine is warm

Shawn Eicholtz · Aug 7, 2019

Anyone have any input, after my 97 yukon haz been running for more than say 30 minutes it is freaquently slow to crank and start,
Battery is good
Starter is good
New distributor and set on 0 degrees
Crank position sensor is 6 months old
Plugs and wires are good
No trouble codes
Ecm is original, perhaps it needs replacing?

Many thanks in advance!

Shawn

evilunclegrimace · Aug 7, 2019

test your cables for proper tightness and for excessive resistance

Shawn Eicholtz · Aug 7, 2019

Tightness is good, i will check for proper resitance, cables are original could be deteriorated , i had not thought about that. Ill let yall know.

Thanks!!

evilunclegrimace said:
test your cables for proper tightness and for excessive resistance

Stumpy · Aug 8, 2019

Yes, on two different vehicles, I had battery cable ends cause starting problems. On one set, they were just a few months old, but cheap, replaced with some better quality versions, had no more trouble out of that vehicle. Just a couple weeks ago had no start issue on my OBS, sounded like starter solenoid, but wound up being the cable ends. I bought some really nice ones, and problem solved.

Shawn Eicholtz · Dec 9, 2019

replaced battery/starter cables, helped a bit however the problem persisted, i replaced a very expensive battery that was testing as being good, but i found it to be defective. it would completely die in less than 5 minutes of a 3-5 load, manufacture would not budge. the upside is everything ended working better, it was frustrating.

slow cranking when engine is warm

Shawn Eicholtz

Newbie

evilunclegrimace

Does not always play well with others

Shawn Eicholtz

Newbie

Stumpy

Heavy Chevy

Shawn Eicholtz

Newbie

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