Resolved 1991 vert, 5.0, auto won't even turn over

cwthompson2000 · Dec 31, 2023

Acts like there is no battery for starting. Everything elect. works but won't start. No turn over and no click. New battery 6 months ago and shows a good charge. Have had it on a batt. tender.
Any suggestions appreciated. I'm used to the older stuff where I could find the solenoid and starter easy.
Chuck

limp · Jan 1, 2024

Check the easy stuff first.... Are you in park or neutral?
Assuming original battery cables? They are probably corroded on the inside...This seems to be a common malady on here....
Can you turn over the engine manually as in using a breaker bar on the front pulley?

KRUISR · Jan 1, 2024

Try jumping power from battery positive to starter solenoid trigger post (small one with one small wire on it). Make sure you are in park. This should crank the engine whether the key is on or not. If it doesn't crank you probably have a bad starter solenoid.

Also want to check the ground wires to battery and from engine to chassis. Its a place to start.

General karthief · Jan 1, 2024

There is a 'no crank checklist ' around here somewhere let me look around, be right back
here it is:

No Crank Checklist

No Crank checklist for 5.0 Mustangs Revised 24-Oct-2013 to update voltage drop figures. No crank, slow crank and stuck starter solenoid problems have the same root causes – low battery voltage and poor connections. For that reason, they are...

stangnet.com

Opal GT · Jan 1, 2024

Does it have an alarm system? On mine you have to press the unlock button on the keyless FOB to disable the alarm and allow it to crank.

cwthompson2000 · Jan 1, 2024

Tried it in park and neutral. Terminals are clean and making good contact. Batt. reads good on my tester and the voltage reads 13.3 volts...

Opal GT · Jan 1, 2024

Try what KRUISR said... your relay is under the plastic cover with the vacuum diagram on it near the battery.

nickyb · Jan 1, 2024

You know the ignition switches suck on these, check on the column to see if it's coming apart.

cwthompson2000 · Jan 1, 2024

I'll try jumping direct to the solenoid tomorrow. That makes sense.
Thanks, I'll let you know what happens..
Chuck

Jarhead67 · Jan 10, 2024

cwthompson2000 said:
Acts like there is no battery for starting. Everything elect. works but won't start. No turn over and no click. New battery 6 months ago and shows a good charge. Have had it on a batt. tender.
Any suggestions appreciated. I'm used to the older stuff where I could find the solenoid and starter easy.
Chuck

Use a

cwthompson2000 said:
Acts like there is no battery for starting. Everything elect. works but won't start. No turn over and no click. New battery 6 months ago and shows a good charge. Have had it on a batt. tender.
Any suggestions appreciated. I'm used to the older stuff where I could find the solenoid and starter easy.
Chuck

if jumping the starter solenoid doesn’t work, use a test light on the solenoid signal wire and see if it’s getting power from the ignition switch.

cwthompson2000 · Jan 10, 2024

Sorry for the late update. It was the solenoid, replaced it and it starts like a champ.
Thanks for all the advice!!
Chuck

General karthief · Jan 11, 2024

We (at least I would) would like an explanation of how you came to this solution, pics of damaged, worn, blow'd up parts along with captivating narration is a plus and can win discounts for yearly dues on memberships here (not really).
I mention this cause I can't count how many times I've found starting issues came down to loose, old wire and dirty connections, also slow crank and long cranking times will kill old wires, starters.
I could tell you stories.
I guess that makes me 'old'

cwthompson2000 · Jan 11, 2024

Didn't take any pics to post. Figuring it had to be the solenoid I just went and bought a new one. Cleaned all the connectors before installing the new one. Everything went in fairly easy.
Chuck

Noobz347 · Jan 12, 2024

General karthief said:
also slow crank and long cranking times will kill old wires, starters.
I could tell you stories.

Particularly if the starter is you.

Resolved 1991 vert, 5.0, auto won't even turn over

cwthompson2000

Member

limp

wrap a little cheese around it and its a done

KRUISR

General karthief

wonder how much it would cost to ship you a pair

No Crank Checklist

Opal GT

New Member

cwthompson2000

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Opal GT

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nickyb

I gotta say i never painted my nuts, Never Ever

cwthompson2000

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Jarhead67

cwthompson2000

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General karthief

wonder how much it would cost to ship you a pair

cwthompson2000

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Noobz347

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Resolved 1991 vert, 5.0, auto won't even turn over

Member

wrap a little cheese around it and its a done

wonder how much it would cost to ship you a pair

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New Member

I gotta say i never painted my nuts, Never Ever

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Member

wonder how much it would cost to ship you a pair

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Stangnet Facilities Maint Tech... Er... Janitor

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