slow cranking

[emeracing]

ok i have a 95 eagle talon tsi i have a new battery a new starter and a alternator but some times the cranking is slow but fires over its like a 50/50 chance if i get fast start or slow start when i try to start it what do you think it is ive done a voltage test and everything looks and so does the wires so im stuck what do you all think

 

[Turbo Spyder]

Check your Starter, might be starting to fail.

 

[Schmegma]

Did you do a voltage drop test on the starter, battery?

Sounds like wiring or not getting proper voltage. If that all checks out and wires power/ground are good check for spark and fuel. Timing good?

What mods?

 

[wolf alchemy]

It could have something to do with the realative position of your crank or pistons.

 

[BostonGST]

I've been having issues with that. My problem was bad cable connection at the battery. Make sure all the power terminals are clean and getting juice not just the one to the starter

 

[DSM1G90]

Seen new (actually reman) starters go wacky from the beginning. Had do put another one in right after I did the install two days later with the same issue .. slow starting.

Got a warranty return with that bad one.

-DSM

 

[keltalon]

Its your ground wire that goes from the battery to the transmission just to make its connected. let us know it sounds simple but will lead to issue at hand!

 

[Old Mitsu Tech]

Take a good quality multimeter. Set it on the Volts DC scale. Put the black or ground on the battery - post. Check the voltage at the positive post. Crank the car and see what the battery is holding at. Remember, a fully charged battery is 12.6 volts at rest. A battery that is either discharged or bad is around 12.2 or so. If you are dropping below 9.7 volts while cranking, most vehicles do not have sufficient energy to fire the plugs. If that part is good, leaving the ground on the negative post, put the positive probe on the battery terminal and repeat. If that is good, then go to the starter post. The drop should be absolutely minimal. You can reverse the procedure and check the grounds. Somewhere you should be able to locate your either bad connection or defective component. It's all process of elimination. I wish you well.

 

[emeracing]

Update: the alternator voltage reg failed today when my problem got worse so im 95% sure that was the problem for my slow starts but also when i cranked it over it dropped to 9.2 volts on the tester and they tested battery and it passed but alt didnt