• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Engine Friends, I'm having trouble with my 86 starting.

  • Thread starter Thread starter Billy Benton
  • Start date Start date Jan 7, 2019
B

Billy Benton

New Member
Jan 7, 2019
7
0
1
Bay Minette Alabama
Jan 7, 2019
#1
  • Jan 7, 2019
  • #1
I sometimes have 10.9 volts at the coil and sometimes don't. I have changed the MAP , IAC, TFI, and TPS. You can pull the codes manually and only has 81,82 I don't believe these will keep it from starting though. When it cranks it runs very well them within 2 maybe 3 minutes it shuts off and loses power it only cranks over but no start. What do y'all think.
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,933
10,574
203
polk county florida
Jan 7, 2019
#2
  • Jan 7, 2019
  • #2
I think you need to check out the cranks but no start checklist here: https://www.stangnet.com/mustang-fo...start-checklist-fuel-injected-mustangs.787471
Read it over to get familiar then do the steps one by one, take notes and let us know what you find.
If I have to guess it would be a fuel delivery problem but thats just a guess, the checklist will keep you from wasting time and money.
 
B

Billy Benton

New Member
Jan 7, 2019
7
0
1
Bay Minette Alabama
Jan 7, 2019
#3
  • Jan 7, 2019
  • #3
General karthief said:
I think you need to check out the cranks but no start checklist here: https://www.stangnet.com/mustang-fo...start-checklist-fuel-injected-mustangs.787471
Read it over to get familiar then do the steps one by one, take notes and let us know what you find.
If I have to guess it would be a fuel delivery problem but thats just a guess, the checklist will keep you from wasting time and money.
Click to expand...
Thanks I will check it out this afternoon Sir!
 
B

Billy Benton

New Member
Jan 7, 2019
7
0
1
Bay Minette Alabama
Jan 8, 2019
#4
  • Jan 8, 2019
  • #4
Billy Benton said:
Thanks I will check it out this afternoon Sir!
Click to expand...
Well went home yesterday evening reached inside turned key and she fired right up ran like a top for about 30 minutes or so and then died. there again no fire from the coil. I'm did notice that the small ground from the firewall next to the solenoid to the negative battery terminal was warm so when I found that I removed battery cable and gave up for the night. Anyone have anymore ideas?
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,933
10,574
203
polk county florida
Jan 8, 2019
#5
  • Jan 8, 2019
  • #5
I posted this on another thread where you asked, just in case you missed it:There are several ground wires in the engine compartment, battery to block, not the timing cover, not any accessory bracket, to the block, the small wire from negative cable/post to a small screw between the battery and the solenoid, another black wire from there into a cylindrical connector then into the wire harness, on the drivers side rear of head to small screw in firewall, one in the injector harness that is usually bolted to the intake on the passenger side under the fuel pressure regulator or to the back of the passenger head. I don't know how long you have had the car but the ignition switchs are susceptible to bad connection causing the plastic connector to discolor and make for start/run problems. Not the key switch but the electrical switch under the dash on the steering column.
 
B

Billy Benton

New Member
Jan 7, 2019
7
0
1
Bay Minette Alabama
Jan 8, 2019
#6
  • Jan 8, 2019
  • #6
General karthief said:
I posted this on another thread where you asked, just in case you missed it:There are several ground wires in the engine compartment, battery to block, not the timing cover, not any accessory bracket, to the block, the small wire from negative cable/post to a small screw between the battery and the solenoid, another black wire from there into a cylindrical connector then into the wire harness, on the drivers side rear of head to small screw in firewall, one in the injector harness that is usually bolted to the intake on the passenger side under the fuel pressure regulator or to the back of the passenger head. I don't know how long you have had the car but the ignition switchs are susceptible to bad connection causing the plastic connector to discolor and make for start/run problems. Not the key switch but the electrical switch under the dash on the steering column.
Click to expand...
I've had it about 3 days ran fine at first, now all this has started. Thanks for your input I will get on it again this afternoon
 
You must log in or register to reply here.

Similar threads

8
Electrical Crank-no start ... no spark ... no injector pulse, was it something I did? (redux)
  • 85gtCOBRA
  • Oct 28, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
571
Fox 5.0 Mustang Tech Oct 29, 2025
85gtCOBRA
8
S
Crank no start, I’m stumped!
  • Seth Brogan
  • May 18, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
10
Views
973
1996 - 2004 SN95 Mustang -General/Talk- May 14, 2026
BossHorseGirl
B
8
Engine Rough idle and aggressive sputtering when accelerating
  • 88vertible
  • Aug 13, 2025
  • Fox 5.0 Mustang Tech
Replies
4
Views
1K
Fox 5.0 Mustang Tech Dec 13, 2025
Jarhead67
J
9
1995 5.0 just cranks
  • 9GT5
  • Jun 29, 2025
  • 1994 - 1995 Specific Tech
Replies
1
Views
370
1994 - 1995 Specific Tech Jun 29, 2025
AeroCoupe
K
Engine 2000 Mustang GT - Fuel issue post-blown spark plug repair
  • kenster1092
  • Feb 26, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
351
SN95 4.6L Mustang Tech Mar 10, 2026
kenster1092
K
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?