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

1989 wont start after motor swap

  • Thread starter Thread starter jakeklein89
  • Start date Start date Apr 8, 2019
  • Tags Tags
    1989 foxbody foxbody foxbody 5.0 need advice need help wont rev when hot
  • 1
  • 2
  • 3
  • 4
Next
1 of 4 Next Last
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 8, 2019
#1
  • Apr 8, 2019
  • #1
im having some issues my old 5.0 in my 1989 gt wasnt running good and my dad had a complete with accessories 1994 5.0 that i could have so i swaped and put my 1989 upper and lower intake on the 94 block and kept the 94 accessory set up and put it in the car. i started it up started first try didnt even hestitate was running a little rough so i hoped out amd moved timing back towards 10-12 with my timing light now but i had to leave for work so i ahut her off and left came back next day and now 3 days in a row wont start ive cleaned grounds new battery new distributor new ignition coil new spark plugs and wires new tfi cap and rotor and fuel pump im so puzzled. i have fuel preasure 40ish psi but no spark. i though it was coil because the ohms it was giving were below what it was supposed to read didnt change anything then thought it was tfi or pip sensor so i got a complete distributor disnt chamge anything thought maybe fuel pump went bad because i didnt have fuel preasure but now i do have 40 psi i am so puzzled i drove the car the day i parked it to pull motor and trans the 94 motor i have in it now ran pristine with less then 100k miles on it eveything should be good i dont get it ? the car cranks really good it sounds like it wants to start like it right there. PLEASE HELLLP i live in michigan so if anyone has some time to possibly help hands on im always looking for some help/car friends if you wanna call or text me im available anytime 248-648-9887 Jake is my name hoghly approciate any help to get me back on the road im in agony shes not firing right up
 
Last edited: Apr 8, 2019

95BlueStallion

My assy trans to myself
15 Year Member
Feb 22, 2007
5,126
3,091
214
Cedar Rapids, Iowa
Apr 9, 2019
#2
  • Apr 9, 2019
  • #2
Check for codes. Even with no check engine light you probably have some codes showing up that may help you find the culprit.
 

Boostedpimp

20+ Year Stangneter
May 8, 2003
1,451
493
154
NJ
Apr 9, 2019
#3
  • Apr 9, 2019
  • #3
Have you tried cranking the car with the gas pedal to the floor?

You mentioned no spark, did the distributor swap cure that problem or is it still getting no spark?
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,929
10,573
203
polk county florida
Apr 9, 2019
#4
  • Apr 9, 2019
  • #4
https://www.stangnet.com/mustang-fo...start-checklist-fuel-injected-mustangs.787471
Start at the top and do the list step by step, even though you have already replaced some things, the next step depends on the result from the one before.
 

90sickfox

Wasn't a pretty sight...and I've got big hands
SN Certified Technician
Mar 2, 2015
6,945
5,816
213
Apr 9, 2019
#5
  • Apr 9, 2019
  • #5
Pull the number 1 spark plug and verify TDC. ( sounds like you may have done that but always could double check ). Make sure the distributor isn't 180 degrees out.

Make sure number 1 is on cap in same orientation as pic
 
Reactions: Mustang5L5
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#6
  • Apr 9, 2019
  • #6
i have tried starting the car with the pedal to the floor and it just floods the car to the point were the spark plugs are soaked....
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#7
  • Apr 9, 2019
  • #7
going to make sure my diarributor is right i was thinking i was supposed to use it with how the firing order was on my 89 and distributor rotated in the position it was not how it should be in the 94 i hope this will work ! this is whar ill try first
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#8
  • Apr 9, 2019
  • #8
i blocked off the egr on the back of the block but havent been able to buy the block off plate or the egr electric plug would thag keep me from driving ?
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#9
  • Apr 9, 2019
  • #9
Boostedpimp said:
Have you tried cranking the car with the gas pedal to the floor?

You mentioned no spark, did the distributor swap cure that problem or is it still getting no spark?
Click to expand...
yes still nothing New distributor didn’t help
 

Boostedpimp

20+ Year Stangneter
May 8, 2003
1,451
493
154
NJ
Apr 9, 2019
#10
  • Apr 9, 2019
  • #10
Run through the check list posted in #4

I didn't suggest your timing being out because you said your not getting spark. If you don't get spark you will flood the engine like your doing which is why I suggested starting the car with the pedal all the way down which disables the injectors for startup. Careful you don't wash down your cylinders and go back over everythign you touched or start ruling everything out one by one by using that check list. Also no plugging the smog ports on the back of the cylinder heads and deleting the EGR will not prevent startup but may produce a check engine light
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#11
  • Apr 9, 2019
  • #11
Boostedpimp said:
Run through the check list posted in #4

I didn't suggest your timing being out because you said your not getting spark. If you don't get spark you will flood the engine like your doing which is why I suggested starting the car with the pedal all the way down which disables the injectors for startup. Careful you don't wash down your cylinders and go back over everythign you touched or start ruling everything out one by one by using that check list. Also no plugging the smog ports on the back of the cylinder heads and deleting the EGR will not prevent startup but may produce a check engine light
Click to expand...

this is a photo of a everything ive done off the check list cranks but still wont start
 

Mstng93SSP

You have a nice rear end there Dave.
15 Year Member
Nov 29, 1999
2,993
3,500
184
Mililani, Hawaii
Apr 9, 2019
#12
  • Apr 9, 2019
  • #12
jakeklein89 said:
i have tried starting the car with the pedal to the floor and it just floods the car to the point were the spark plugs are soaked....
Click to expand...


Cranking with the gas pedal to the floor should not flood the car, it should shut off the injectors.
 

Dan02gt

mazing how much gas smell came from that tiny hole
20+ Year Stangneter
Mar 2, 2003
909
415
113
Greenville, NC
Apr 9, 2019
#13
  • Apr 9, 2019
  • #13
When I did the H/C/I install on my car I had issues getting it to start and stay running. Sometimes it would start and die and others it wouldn't start at all. I knew it was the timing but I just couldn't get it close enough to start and stay running to set it. Finally I had my dad crank the car while I rotated the distributor back and forth to find a position it would start and stay running. Had it running perfectly in about 2 minutes.

I would suggest having someone crank the car while you turn the distributor by hand to see if you can get it to start. Of course verify that you are close on the timing first.
 
Reactions: Mstng93SSP
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#14
  • Apr 9, 2019
  • #14
Dan02gt said:
When I did the H/C/I install on my car I had issues getting it to start and stay running. Sometimes it would start and die and others it wouldn't start at all. I knew it was the timing but I just couldn't get it close enough to start and stay running to set it. Finally I had my dad crank the car while I rotated the distributor back and forth to find a position it would start and stay running. Had it running perfectly in about 2 minutes.

I would suggest having someone crank the car while you turn the distributor by hand to see if you can get it to start. Of course verify that you are close on the timing first.
Click to expand...
Thank you so much eveything was rly i. great condition before the swap ao i would fine it almost impossible for stufff like computer and such to be bad its a 132k miles car was completely stock and umolested. i reallly think my starting issue is timing but i wasnt sure if it wouldnt start but this is extremely helpful !!
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#15
  • Apr 9, 2019
  • #15
Dan02gt said:
When I did the H/C/I install on my car I had issues getting it to start and stay running. Sometimes it would start and die and others it wouldn't start at all. I knew it was the timing but I just couldn't get it close enough to start and stay running to set it. Finally I had my dad crank the car while I rotated the distributor back and forth to find a position it would start and stay running. Had it running perfectly in about 2 minutes.

I would suggest having someone crank the car while you turn the distributor by hand to see if you can get it to start. Of course verify that you are close on the timing first.
Click to expand...

im curious what do you mean when you say h/c/i install ??
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,929
10,573
203
polk county florida
Apr 9, 2019
#16
  • Apr 9, 2019
  • #16
Heads, cam, intake
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#17
  • Apr 9, 2019
  • #17
General karthief said:
Heads, cam, intake
Click to expand...
omg hahahaha thats the next thing i wanna do trying to decide how long i wanna daily drive this lil old 302 before i drop the 351 in my car
 

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
Aug 25, 2016
27,929
10,573
203
polk county florida
Apr 9, 2019
#18
  • Apr 9, 2019
  • #18
For about a week
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 9, 2019
#19
  • Apr 9, 2019
  • #19
General karthief said:
For about a week
Click to expand...
gahahah if i had the funds right now i wouldnt have ever put another 302 in here
 
J

jakeklein89

Active Member
Apr 8, 2019
125
37
38
michigan
Apr 11, 2019
#20
  • Apr 11, 2019
  • #20
i double checked tdc and distributor still nothing im so stumped
 
  • 1
  • 2
  • 3
  • 4
Next
1 of 4 Next Last
You must log in or register to reply here.

Similar threads

A
1987 5.0 speed density Foxbody crank no start
  • Alan2204
  • May 23, 2026
  • Fox 5.0 Mustang Tech
Replies
10
Views
310
Fox 5.0 Mustang Tech May 30, 2026
Mcmahst
B
No spark. 1990 foxbody 5.0 gt
  • Boogi
  • Nov 16, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
0
Views
188
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 16, 2025
Boogi
B
D
Foxbody Misfire 5.0 Swap
  • DPORTER0729
  • May 2, 2025
  • Fox 5.0 Mustang Tech
Replies
7
Views
624
Fox 5.0 Mustang Tech Jul 13, 2025
90sickfox
Resolved 93 Mustang 5.0 - Cranks but does not start
  • dan50
  • Jul 18, 2026
  • Fox 5.0 Mustang Tech
Replies
6
Views
133
Fox 5.0 Mustang Tech Jul 18, 2026
dan50
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
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?