I have a very interesting situation! 06 mustang won’t start unless I remove fuse HELP!

Drum4life23

New Member
Nov 3, 2019
1
0
1
Oakhurst
So I desperately need some advice on this one!! So I have an 06 mustang with a newer engine haven’t had many issues with it but recently my car wouldn’t start out of the blue! So I popped the hood and checked a few fuses and as I put about the third fuse back in from checking it my interior lights came on so I tried starting it and it started!! It only started about 3 times before it stopped starting/turning over. So I did the “fuse trick” again about 3 times it worked till now it’s back to not starting and the fuse trick doesn’t work but I am hoping that it will tell me what’s wrong So PLEASE HELP! Any one have any ideas???? Thanks!
 
  • Sponsors(?)


08GT500

Active Member
Jul 12, 2018
780
111
53
Massachusetts
Hi, Do you have a security icon on your dash, it may be your alarm system. Do you have the spare key? Try that with nothing else on the ring at the same time. Check all your fuses, the one in the Smart Junction Box may blow. If you’re trying to start, verify you have the steering wheel locked so it doesn’t move first.
Has it rained recently before this occurred? Water makes its way into the smart junction box in 05’-07’ Mustangs. Look for moisture under the dash with a flashlight, check every fuse, check for power at the inertia switch at both sides, check your grounds, and clean your battery terminals
Try the wheel in a few positions. Then pull out the key & try to start again. Be sure the fuel pump is running for about 5 seconds when you turn the key to on, just before “start”. If you have a 5 speed, make sure the neutral safety switch is being hit when you press the clutch in to start it
The 05’07’ Mustangs had an issue with water getting inside the Smart Junction Box, make sure its bone dry inside the fuse blocks ‘ under the dash. Use a good. Flashlight, under hood/underdash.
Check the fuel pump inertia switch if it spins but no start.
The battery must be fully charged for it to start. Pull the terminals, clean the terminals again, check the grounds, battery to block, block to chassis, battery to chassis, battery to CPU. Remove each one, clean to bare metal, use an electrical contact dielectric paste & lock bolts down tightly, these have been known to have alternator grounding problems, jumper negative cable to battery negative to starter chassis.
Once running check for 13.8-14.2 V at battery terminals, should be at minimum, 12.0 volts at battery, just sitting there. Redoing these steps sucks, but it helps to get you reliably running.
Clear every computer code once car charges overnight, tighten clamps (+)/(-) very tight but do not overtighten.
Hitting the brake & holding it will clear codes once each FOB button is held in, each for a few seconds, last is unlock, hold brave in for 30 seconds after starting, use hour old FOB here, use the new one once you clean grounds, ensure all grounds are tight, Neutral safety switch, turn off security Lamp
May things repais that properly wornći works, make sure they are , post what you find, can reset PATS/FOB ‘
Good luck for now!
Starter relay costs 15$, buy a big package of fuses of type, mains for fuse holders & mains for fuse blocks
Talk to you later- John
 

08GT500

Active Member
Jul 12, 2018
780
111
53
Massachusetts
Hi, 05’07’s are notorious for this behavior, turn your steering wheel to lock and insert the key & retry, solidify all grounds including new battery posts, use a spare key with none other on the ring, verify all fuses as good, battery voltage sitting should bev12.0V minimum. 13.6-14.2 when alternator charges while running, Smart a junction Box is notorious for water infiltrating, open and verify this is bone dry, underdash/undsrhood water leaks inside with rain.
Grounding issues with alternator causes a floating ground issue, bond to Battery with negative to chassis, AWG#6 THHN. Every ground need be solidified, dielectric compound on all chassis grounds, CPU ground, Block to Chassis, Check Neutral safety Switch is operational under Clutch or Auto Trans, use other key & FOB to attempt to start engine, steering locked before key insertion, keep battery on float charger, verify car primes fuel system when switched to run, depending on what worked, that will be where the solution lies. What 5A fuse were joh pulling before when car responded?
Good luck
-John
 

08GT500

Active Member
Jul 12, 2018
780
111
53
Massachusetts
So I desperately need some advice on this one!! So I have an 06 mustang with a newer engine haven’t had many issues with it but recently my car wouldn’t start out of the blue! So I popped the hood and checked a few fuses and as I put about the third fuse back in from checking it my interior lights came on so I tried starting it and it started!! It only started about 3 times before it stopped starting/turning over. So I did the “fuse trick” again about 3 times it worked till now it’s back to not starting and the fuse trick doesn’t work but I am hoping that it will tell me what’s wrong So PLEASE HELP! Any one have any ideas???? Thanks!
Hi, My response(s) to your issue combined, is messy at best. Nonetheless, the content is correct. Water infiltration, ignition issues, charging system anomalies affected 05’-07’s. Any questions and I’ll be happy to help, or clarify Nohn, John
 
Thread starter Similar threads Forum Replies Date
D The effect of drugs on arachnids. Very Interesting! 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 15
7 very Interesting 1974 - 1978 Mustang II Talk & Tech 3
ASD Very interesting local car? Regional Forums and Event Information 12
A Off topic- I.N.S citizenship test- very interesting Regional Forums and Event Information 20
G Link to a Very interesting story about Chernobyl 1965 - 1973 Classic Mustangs -General/Talk- 5
Dr. Wu 2000 custom tune today, very interesting !!! SN95 4.6L Mustang Tech 8
95BLBLVert Very interesting oil filter study 1994 - 1995 Specific Tech 7
S Very high mileage Mustang for sale 2005 - 2009 Specific Tech 5
S 01 v6 very dash wiring issue SN95 V6 Mustang Tech 4
A Any help with Microsquirt tuning would be very much appreciated Digital Self-tuning Forum 14
F For Sale 2003 Mustang GT Vert with very low miles (21K)-Well taken care of SN95 Mustangs For Sale (1994-04) 1
T Very bad vibration from clutch pedal after hitting a bump 1996 - 2004 SN95 Mustang -General/Talk- 3
J For Sale 1994 Mustang GT Autocross/HPDE setup, very clean, California. SN95 Mustangs For Sale (1994-04) 1
DAJ352 Old School 5.0 Very cool stuff from the early days of the movement 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 26
V Suspension 1995 front end very loose 1994 - 1995 Specific Tech 4
markinms Engine Best way to clean a GT40 Intake (very greasy/dirty)? Fox 5.0 Mustang Tech 6
Nick Bos C4 Transmission has very delayed shifts 1965 - 1973 Classic Mustangs -General/Talk- 0
S newb from so cal. Just bought a very nice black on black 2000 GT The Welcome Wagon 1
J rough idle and very slight miss SVT Tech Forum 2
G For Sale '11 GT, Very low miles, Kona Blue S197 Mustangs For Sale (2005-14) 0
9 Paint and Body [[Very Quick Tutorial]] How to Remove your REAR bumper. SN95 V6 Mustang Tech 0
J Looking at 94 gt for a possible project. Im very happy to get back in the swing of things finally!!! The Welcome Wagon 3
M Very annoying noise on 2018 GT 2015+ (S550) Mustang -General/Talk 5
S For Sale Ford OE. 8.8" 3:27 ring & pinion very nice used Other Classifieds 0
E Deep Scratch/very Small Ding Or Dent On Hood? What To Do ? Any Repair Ideas? 2015+ (S550) Mustang -General/Talk 4
F Auction Bought Cobra - Running Very Poorly SN95 4.6L Mustang Tech 14
R Car Stalls And Dies Very Often SN95 V6 Mustang Tech 10
Nutty 5.o SOLD 1990 Mustang Lx 5.0 W/5 Speed Hatch Very Nice/clean Dark Titanium In Pa Fox Body Mustangs For Sale (1979-93) 11
Realbill1976 Very New To Ford 1996 - 2004 SN95 Mustang -General/Talk- 4
little_redfox_91 91 Gt Running Very Rich Fox 5.0 Mustang Tech 16
78mIIman Engine 78 Mustang Ii 302 Factory Mess Up, Very Weird!!! 1974 - 1978 Mustang II Talk & Tech 0
N Bad Tps/iac? Bad/semi-erratic Idle, Running Very Rich; Window Motor Won't Connect To Gear 1994 - 1995 Specific Tech 5
cmerk27 Engine Very Strange Coolant Leak (checked All The Basics) And Other Problems SN95 4.6L Mustang Tech 20
C Please Help Running Very Hot Fox 5.0 Mustang Tech 19
blackfox91 Very Bad Gas Mileage, But It Has Many Performance Parts. 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 11
S After Pi Swap Very Loud Noise 1996 - 2004 SN95 Mustang -General/Talk- 16
D Header Pipe Near #6 & #7 Plugs Very Hot, Melting Stuff & Plug 7 Erratic Timing Fox 5.0 Mustang Tech 1
D Emissions Problem - Very High Hc Fox 5.0 Mustang Tech 35
lepryy Need Some Help With Turn Signals. Plus A Very Strange Module Found Under My Steering Column. (videos Fox 5.0 Mustang Tech 11
mustangfiveo198 Convertible Top Coming Up Very Slow Fox 5.0 Mustang Tech 1
BKM48198 Very High Idle Only After Warmed Up About 20 Mins.???? Fox 5.0 Mustang Tech 7
Edbert Tech Help! Very Rough Idle At Low Rpm...why? - Carb Guys Classic Mustang Specific Tech 9
93lx5.0 SOLD 2007 Shelby Gt500, Red W/black Stripes, $28k, 31k Miles, Very Clean S197 Mustangs For Sale (2005-14) 2
S SOLD 2014 Mustang V6 Perf Pack, Recaros Very Low Miles S197 Mustangs For Sale (2005-14) 0
bennettracing Expired Very Custom 1990 Roadster Project Fox Body Mustangs For Sale (1979-93) 3
Jair633 Very Confused 1996 - 2004 SN95 Mustang -General/Talk- 3
callys Holley 750 Vacuum Help - Very Rich At Cruise Classic Mustang Specific Tech 2
m3x1c0 Overheating Very Quickly Fox 5.0 Mustang Tech 143
DonSoares Suspension Rebuilt Front End... Now Very Noisey. What Can I Do? Fox 5.0 Mustang Tech 2
J My 89 5.0 Very Build 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- 50
Similar threads