Won’t crank single click

Daliceo

New Member
Feb 18, 2016
7
0
1
24
All I’m getting is a single click when trying to start up my fox. I’ve checked the battery it’s good and I’ve replaced the ign switch as it was getting loose. This is my daily and it happened minutes after it was cranking perfectly fine. Below a video that shows me testing at the solenoid. Goes from 12v to 0.5v when cranking. Any ideas???

View: https://imgur.com/gallery/pKbalzL
 
  • Sponsors(?)


General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
17,184
5,494
193
polk county florida
The battery could have a shorted cell. Load test (kinda like what you did on the video)
Bad connections. Remove and inspect/clean
Bad starter, old cables. Voltage drop test
 

jrichker

StangNet's favorite TOOL
SN Certified Technician
Mar 10, 2000
27,243
2,594
234
74
Dublin GA
lowendmac.com
All I’m getting is a single click when trying to start up my fox. I’ve checked the battery it’s good and I’ve replaced the ign switch as it was getting loose. This is my daily and it happened minutes after it was cranking perfectly fine. Below a video that shows me testing at the solenoid. Goes from 12v to 0.5v when cranking. Any ideas???

View: https://imgur.com/gallery/pKbalzL
No Crank checklist for 5.0 Mustangs

Revised 05-Oct-2010 to update Fluke references.

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 grouped together.
Use the same initial group of tests to find the root cause of both no crank and stuck solenoid problems.

Since some of the tests will bypass the safety interlocks, make sure that the car is in neutral and the parking brake is set. Becoming a pancake isn’t part of the repair process…


1.) Will the car start if it is jumped? Then clean battery terminals and check battery for low charge and dead cells. A good battery will measure 12-13 volts at full charge with the ignition switch in the Run position but without the engine running.
A voltmeter placed across the battery terminals should show a minimum of 9.5-10 volts when the ignition switch is turned to the Start position and the starter engages or tries to engage. Less than this will result in a clicking solenoid, or slow cranking (if it cranks at all) or a starter solenoid that sticks and welds the contacts together.

Most auto parts stores will check your battery for free. It does not have to be installed in the car to have it checked; you can carry it with you to the auto parts store.

The battery posts and inside of the battery post terminals should be scraped clean with a knife or battery post cleaner tool. This little trick will fix a surprising number of no start problems.

The clamp on with 2 bolts battery terminal ends are a known problem causer. Any place you see green on a copper wire is corrosion. Corrosion gets in the clamped joint and works its way up the wire under the insulation. Corroded connections do not conduct electricity well. Avoid them like the plague...

If the starter solenoid welds the contacts, then the starter will attempt to run anytime there is power in the battery. The cables and solenoid will get very hot, and may even start smoking. The temporary fix for a welded starter solenoid is to disconnect the battery and smack the back of the solenoid housing a sharp blow with a hammer. This may cause the contacts to unstick and work normally for a while.

A voltmeter is handy if you are familiar with how to use it to find bad connections. Measure the voltage drop across a connection while trying to start the car: more than .5 volts across a connection indicates a problem.

See http://assets.fluke.com/appnotes/automotive/beatbook.pdf for help for help troubleshooting voltage drops across connections and components. .



2.) Check the battery to engine block ground down near the oil filter, and the ground behind the engine to the firewall. All grounds should be clean and shiny. Use some sandpaper to clean them up.

3.) Jump the big terminals on the starter solenoid next to the battery with a screwdriver - watch out for the sparks! If the engine cranks, the starter and power wiring is good. The starter relay is also known as a starter solenoid.

The rest of the tech note only concerns no crank problems. If your problem was a stuck solenoid, go back to step 1.

4.) Then pull the small push on connector (small red/blue wire) off the starter solenoid (Looks like it is stuck on a screw). Then jump between the screw and the terminal that is connected to the battery. If it cranks, the relay is good and your problem is in the rest of the circuit.

5.) Remember to check the ignition switch, neutral safety switch on auto trans and the clutch safety switch on manual trans cars. If they are good, then you have wiring problems.

Typical start circuit...
Diagram courtesy of Tmoss & Stang&2birds



6.) Pull the starter and take it to AutoZone or Pep Boys and have them test it. Starter fails test, then replace it. If you got this far, the starter is probably bad.


Starter solenoid wiring for 86-91 Mustang

Starter solenoid wiring 92-93 Mustang or earlier Mustang with upgraded high torque mini starter.


Electrical checks for the switches and starter solenoid

Remove the small red/blue wire from the starter solenoid. Use a screwdriver to bridge the connection from the battery positive connection on the starter solenoid to the small screw where the red/blue wire was connected. The starter should crank the engine. If it does not, the starter solenoid is defective.

If the starter does crank the engine, the problem is in the clutch safety circuit (5 speed) or Neutral Sense Switch (auto trans) or ignition switch.


Typical start circuit...
Diagram courtesy of Tmoss & Stang&2birds



You will need a voltmeter or test lamp for the rest of the checks. Connect one lead of the voltmeter or test lamp to ground. The other lead will connect to the item under test.
Look for 12 volts on the white/pink wire when the ignition switch is turned to the Start position. Check the ignition switch first.
No 12 volts, replace the ignition switch.

The next step will require you to push the clutch pedal to the floor (5 speed) or put the transmission in neutral (auto trans) while the ignition switch is turned to the Start position.
Good 12 volts, check the clutch safety switch (5 speed) or Neutral Sense Switch (auto trans) for good 12 volts on both sides of the switches. No 12 volts on both sides of the switch and the switches are defective or out of adjustment. Check the wiring for bad connections while you are at it.
 

Gs87GT

Active Member
Sep 25, 2019
238
77
38
Penn's Woods
Your battery is probably bad. Pull it and have it load tested to confirm. 12V static is ok, no load. Many are 12.5V static. Under 12V static, no load is a bad battery.

It can have proper static voltage and still fail the load test, go get it checked and then you'll know
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
28,692
10,658
224
Box behind Walmart
www.stangnet.com
Resting fully charged 12-volt batteries are around 12.8-12.9 volts, and flat dead ones are at 12.0 volts, so 12.4 volts on a resting battery means it's about 50% charged.
 
Thread starter Similar threads Forum Replies Date
B Won a mustang The Welcome Wagon 2
Jason Esquivel I Won 20” Tis 536 Rims What Offset/backspacing Do I Order? 2010 - 2014 Specific Tech 0
stang10V6 won a $1000 gift card from LMR, what should i get for my 2012 V6? 2010 - 2014 Specific Tech 0
4Jenna I won at a Chevy Show haha 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 7
stprorolla49 Look what I won!! 1996 - 2004 SN95 Mustang -General/Talk- 10
R for all the nay sayers on the 400M...kaase won the engine masters classic 2 years 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 13
R I won a free Stage 5 port from Steigemeier, wooooohoooooooo. 2007 - 2014 Shelby GT500 Tech 3
Flghtmstr1 Won Car Show tonight! 1996 - 2004 SN95 Mustang -General/Talk- 5
warriorpluto just won a 2000 explorer gt40p engine 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 45
joshjwc9 Just won these on eBay! 1996 - 2004 SN95 Mustang -General/Talk- 9
scupking I won!!! 1996 - 2004 SN95 Mustang -General/Talk- 5
deftsound Look what i just won! 1996 - 2004 SN95 Mustang -General/Talk- 10
04YELLOWGT Won My First Car Show! 1996 - 2004 SN95 Mustang -General/Talk- 14
mixedbreed02gt won;t be long now... 1996 - 2004 SN95 Mustang -General/Talk- 5
Unbrdld07 who won 2005 - 2014 S-197 Mustang -General/Talk- 4
RUNINAGT Finally won something worthwhile... 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 11
fobra559 **OMG!!! I WON THE GT500KR!!!** 1996 - 2004 SN95 Mustang -General/Talk- 14
aflacjack Won a new cobra! Question? SVT Tech Forum 32
the98stang won some cash today 1996 - 2004 SN95 Mustang -General/Talk- 4
bloopbloob If i won the lotto, I'd still drive the stang 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 40
RacEoHolic330 Wow...I won the CarDomain Face Off against an 85 Camaro 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 6
strtrcr50 Won my first Ebay Purchase! 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 3
TweekedGT I Just Won An NHRA WALLY! 1996 - 2004 SN95 Mustang -General/Talk- 5
Redsnk95 I actually won something...lol 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 5
B Mach WON! 1996 - 2004 SN95 Mustang -General/Talk- 37
krash kendall Look what we WON! 1965 - 1973 Classic Mustangs -General/Talk- 8
Nik_95Cobra Just Won Snap-On Loaded Roll Cart 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 14
T Won best engine now showin' it! 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 22
S *Sigh* If I only won the megabucks..... 1996 - 2004 SN95 Mustang -General/Talk- 7
Adam95GT Won $40.. 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 2
woodyy24 looky what i won 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 19
S Classic Mustang won The Showoff of the Year Award on Cardomain.com 1965 - 1973 Classic Mustangs -General/Talk- 1
W Looky at what I won/got.... 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 16
grey5.0beast ortiz won dangit 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 14
mustangkid05 remember i won the $20,000 ? 1996 - 2004 SN95 Mustang -General/Talk- 46
mustangkid05 I JUST WON $20,000 1996 - 2004 SN95 Mustang -General/Talk- 85
7 I WON!! Regional Forums and Event Information 3
Bosko5.0 removed intake now won,t run right 1994 - 1995 Specific Tech 13
ABQGT Won a KB 1.7 in a bar bet... SN95 4.6L Mustang Tech 24
Cannoball888 If you won, would you take a genuine '65 Sheby GT 350H or $100,000 in cash? 1965 - 1973 Classic Mustangs -General/Talk- 22
woodyy24 looky what i won!! 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 17
The Green GT I just won $200 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 7
9 won 50 bucks off a bosnian named elvis 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 16
S won`t start, need advice Fox 5.0 Mustang Tech 6
Daniel50 my 94gt vs 05 cobalt ss! who won? 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 5
RysRed96GT accidently won a 75mm mac TB... SN95 4.6L Mustang Tech 22
bjl95mustang My g/f just won OZZFEST tickets. Yah 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 6
pony ride Won 1st place at the big show today! Regional Forums and Event Information 22
E Our 73 won "best under construction" yesterday at a show!! 1965 - 1973 Classic Mustangs -General/Talk- 10
L AIRBAG HELP, CAR WON"T START Fox 5.0 Mustang Tech 4
Similar threads