• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

coolent leak

  • Thread starter Thread starter shaunspengler
  • Start date Start date Mar 29, 2011

shaunspengler

Member
Mar 29, 2011
51
1
8
west covina
Mar 29, 2011
#1
  • Mar 29, 2011
  • #1
i have a 1997 mustang 2v gt v8 4.6L i have a bunch of coolent on the v in the middle of the engine. can anyone help, if you have any info let me know or if you need any info let me know thank you
 

GDawg

Founding Member
Mar 22, 2002
1,469
19
68
Nevada
Mar 29, 2011
#2
  • Mar 29, 2011
  • #2
It's the infamous plastic coolant crossover leak... Does your plastic intake manifold have the plastic coolant crossover? If it does, then there is your problem.

See my sig for replacement pics.
 

shaunspengler

Member
Mar 29, 2011
51
1
8
west covina
Mar 29, 2011
#3
  • Mar 29, 2011
  • #3
ok my engine is totaly stock besides intake so im pretty sure its the plastic intake etc. what parts should i buy to fix it and should i be worried about a rebuild?
 

johnnyt03gt

5 Year Member
Mar 15, 2008
453
5
29
dallas TX
Mar 30, 2011
#4
  • Mar 30, 2011
  • #4
you need to use some towels dry up the coolant.
start the engine. and watch closely to locate the leek. then take a picture of it and show us,
 

nyuk98gt

15 Year Member
Oct 10, 2000
1,427
6
79
Chesterfield, MO
Mar 30, 2011
#5
  • Mar 30, 2011
  • #5
shaunspengler said:
ok my engine is totaly stock besides intake so im pretty sure its the plastic intake etc. what parts should i buy to fix it and should i be worried about a rebuild?
Click to expand...

shaunspengler:

No, you need not worry about a rebuild. The intake is not difficult to replace.

You have some choices. You can buy the updated NPI intake with an aluminum crossover. You can buy the PI intake but it needs adapter plates ($$) or some installation tweaking (RTV dabs in the proper spots) to get it to seal just right. The NPI intake is quite restrictive and the engine power output is limited by this intake. The "PI intake swap" is a very popular modification and it is well documented in many, many threads here and on other Mustang boards. If you are mechanically inclined, I suggest that you go with the PI intake. If cash is tight then the cheapest option is the NPI intake with the aluminum crossover.

The coolant may have gotten into the sparkplug wells. If it has then the engine will develop a miss. At least you know what to look for. Sop up what you can with shop towels. Get a can of compressed air (keyboard cleaner at Office Depot/Office Max/Staples/etc.) and blow out the remaining moisture. Dry off the sparkplug boots and put a tiny dab of dielectric grease in the boot and swab it around. Just be careful pulling the boots off because you don't want to break a wire.

I will try to find some threads for you to read. Somebody here did a nice write-up, complete with pictures.

Welcome to StangNet, too!

HTH,

Chris
 

bhuff30

Founding Member
Dec 11, 2001
6,037
35
129
Olathe KS
Mar 30, 2011
#6
  • Mar 30, 2011
  • #6
There is a heater hose that goes right down the middle of the V, underneath the intake manifold. While it should be fairly reliable because it is mostly hard line, be sure to check it and the rubber hose going to it at the back of the engine.
 

nyuk98gt

15 Year Member
Oct 10, 2000
1,427
6
79
Chesterfield, MO
Mar 30, 2011
#7
  • Mar 30, 2011
  • #7
bhuff30:

Excellent point! The o-rings on the water pump nipple may have gotten tired or the heater hose at the back may have broken.

Keep up the good work.

Chris
 

shaunspengler

Member
Mar 29, 2011
51
1
8
west covina
Mar 30, 2011
#8
  • Mar 30, 2011
  • #8
thanksthanks to everyone who tried to help

thanks everyone but i actualy fixed it myself. i had some bolts loose neer the alternator and tited them worked great thanks for all the advice everyone=)
 
You must log in or register to reply here.

Similar threads

B
97 GT with 03 explorer Eddie Bauer edition 4.6l
  • basbill73
  • May 10, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
40
1996 - 2004 SN95 Mustang -General/Talk- May 11, 2026
squeak93
J
Engine Coolant leak from oil filter
  • jr273
  • Mar 26, 2026
  • SN95 4.6L Mustang Tech
Replies
9
Views
202
SN95 4.6L Mustang Tech Mar 31, 2026
squeak93
Q
Resolved 96 crown Vic ECU in a mustang gt
  • QuickDibbles
  • Aug 30, 2025
  • SN95 4.6L Mustang Tech
Replies
5
Views
632
SN95 4.6L Mustang Tech Sep 27, 2025
Noobz347
E
Chasing Vacuum leak 99 GT
  • EBNS_2005
  • May 2, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
2
Views
108
1996 - 2004 SN95 Mustang -General/Talk- May 3, 2026
X-cam34
X
L
Box of old Ford locks
  • Lockguy1967
  • Nov 9, 2025
  • What is it Worth?!?!?
Replies
0
Views
90
What is it Worth?!?!? Nov 9, 2025
Lockguy1967
L
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L 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?