crankshaft position sensor, slow crank?

[willholl79]

Will an unplugged or bad crankshaft position sensor cause a slow crank?

I put my truck back together after studs, injectors, etc and it cranks VERY slow. The batts are good, the starter is 1 month old.

The only thing I know that's not right is the clip is broken on the crankshaft sensor and the plug will not stay on. I am wondering if this is causing a slow crank.

[willholl79]

Checked starter, it's good.
Removed all glow plugs, still cranks slow, not hydrolocked.
Zip-tied crank position sensor plug (for now).
Digital battery charger says both batts are 100%.

What am I missing? Grounding issue?

[southend]

Digital battery charger is not a load tester, get your batteries load tested.

Sent from my phone that somebody didn't help me get.

[willholl79]

Originally Posted by southend

Digital battery charger is not a load tester, get your batteries load tested.

Sent from my phone that somebody didn't help me get.

1st on the list tomorrow.

[sargar]

With the plugs out it should zing over pretty quick. I'll bet the batteries are weak/bad.

Was it a Ford starter or a parts store piece?

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[willholl79]

Originally Posted by sargar

With the plugs out it should zing over pretty quick. I'll bet the batteries are weak/bad.

Was it a Ford starter or a parts store piece?

Sent from my DROID X2 using AutoGuide.Com Free App

The starter is a Napa reman, about a month since installed. Took it off today and had it load tested, good.

Gonna have the batts load tested tomorrow.

[sargar]

Originally Posted by willholl79

Took it off today and had it load toasted, good..

So the starter is toast...that'd do it. Hehe

The batteries will take care of it I bet.

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[willholl79]

Originally Posted by sargar

So the starter is toast...that'd do it. Hehe

The batteries will take care of it I bet.

Sent from my DROID X2 using AutoGuide.Com Free App

Lol, tested not toasted.

[willholl79]

Tested batteries, one was bad, replaced it. Still cranks slow.
Removed, cleaned, reconnect all ground on engine. Still cranks slow.

Gonna check voltage at starter. Maybe a bad wire.

Any other ideas?

[southend]

Other than what you said you was going to check, Batteries should always be replaced in pairs, the "old" one will eventually wear the new one down. A bad starter will "drag" a motor down.

Sent from my phone that somebody didn't help me get.