97 7.3 Difficulty Starting

[WhiteStroke13]

Hey guys, Ive done some research here, and have a few ideas but I really wanted to start my own thread to maybe get my own answers.

I have a 97 7.3 CCSB I bought a few months ago. The truck is in great shape, has been really taken care of. Just started having an issue with the truck starting, if it sits overnight or for a long period. The truck will try and try to turn over, almost like a dead battery, but wont start until 2nd or 3rd try.

I just took out the batteries, had them tested and one was bad so I replaced with a new one. I also occasionally get the battery light on and off on the dash. Will come on if I really romp on the gas on the highway.

All battery connections are tight, as I just changed them out yesterday.

Starter? CPS? Whats your thoughts?

Thanks guys

 

[WhiteStroke13]

anybody?

 

[DIE5EL]

Have you tested the alternator? Sounds like you still don't have enough juice to get it to light. Maybe you have a current draw on the batteries when it sits. Trucks are touchy with voltages. Got to be pretty much 12 or higher while cranking


Sent from my ifone

 

[POWER-STRUCK]

measure battery voltage at each battery while it is running, if there is a voltage difference then suspect the cables (start by looking where the grounds bolt to the block, one might be loose)

 

[Arisley]

Check the belt tensioner. Test the alternator, check the cables. Always replace batteries as a pair, not one at a time.

 

[TERRCO]

Are you saying the starter turns over slow or the starter cranks fine but the truck will not start till you have tried it 2-3 times?

 

[WhiteStroke13]

Starter cranks, it just wont fire. Im gonna replace the glow plug relay and CPS

 

[POWER-STRUCK]

takes a min. of 125 rpm for the pcm to allow it to start! fun fact

 

[Arisley]

Nevermind.

 

[TERRCO]

Check the oil level in the HPOP reservoir. While your at it check the oil in the engine. Sounds like maybe injector o-rings.