Crossover coolant plug part#???

joojoo84 · July 9th, 2010, 03:33 PM

I've been having some trouble getting the air out of my coolant system on my 99 dohc. i believe there is supposed to be an o-ring on the plug thats on the crossover tube.

Does anyone know if there's supposed to be an o-ring on that plug - i do see a ridge for an o-ring, also whenever i contact Ford they dont seem to have any clue of what i'm referring to when i say "plug"...

Car keeps on overheating about 10-15% above the halfway mark - it never overheats completely but does run a little hot . . . i've been cycling and adding coolant as needed. everytime i take the plug out though, it seems like the coolant is to the top.

Any suggestions ? - what started the problem was a hose slipped off and let a lot of air in the system. After a radiator flush, the car now always overheats a little.

*** I did change out thermostat and water pump already.

Mach Boy · July 9th, 2010, 04:04 PM

I took mine to Ford to get the air out. There's a lot of people who do their own stuff that take it to the dealership for a fluid change just because it's so hard to get all of the air out of these DOHCs.

As for the O-ring I don't think there is one. It's just the plug.

joojoo84 · July 9th, 2010, 04:19 PM

Funny thing - I took the cobra to Ford and they attempted to bleed the system and couldnt get the air out. They just told me to do the same thing I had been doing and it will eventually work itself out...

I've never had a manufacturer tell me something like that . . . its just frustrating. Anyone else know if there is an o-ring on the plug or if they just let the ford dealership bleed the system?

ALSO - it seems like coolant is leaking out of my plug a little bit. None of the threads are messed up and i make sure its pretty snug - anyone have any idea where i can get another plug?

98Cobra_sleeper · July 9th, 2010, 04:34 PM

i dont think there is an 0-ring. i didnt' see one when i had mine out last. i let mine run and loosen it a lil and a bunch of bubbles keep coming out. then i drive the car again and stop and bleed it out again. i repeat the process over and over again. it does take a while to get all of it out.

Mach Boy · July 9th, 2010, 05:39 PM

You could have a bad cap for your reservoir. You can give Tousley Ford a call. They usually have the best dealership price you can get.

joojoo84 · July 9th, 2010, 06:54 PM

replaced the cap on my resevoir as well . . .

joojoo84 · July 11th, 2010, 11:24 PM

ok . . . so, in conclusion, the cobra now only overheats when cruising at low speeds (35 mph and under)

could this be radiator possibly?

Mach Boy · July 12th, 2010, 12:10 AM

Is your radiator fan turning on?

joojoo84 · July 12th, 2010, 12:58 AM

It is ... At idle anyways...the condenser fins are really messed up and i think airflow is gettin blocked to the radiator (which is already a 10 year old stock rad)

joojoo84 · July 12th, 2010, 09:52 PM

Ordering an 03-04 cobra radiator. I'm also gonna pick up a new coolant reservoir (probably canton or black moroso) also with low temp t-stat.

Anybody have suggestions on coolant reservoir and also on coolant panel?

joojoo84 · July 18th, 2010, 10:37 PM

Here is the part# for crossover plug:

F3LY-8A500-A

It is a Lincoln part number and it DOES come with oring as well.

July 9th, 2010, 03:33 PM	#1
joojoo84 Regular Join Date: Mar 2007 Posts: 61 iTrader: 0 reviews	Crossover coolant plug part#??? I've been having some trouble getting the air out of my coolant system on my 99 dohc. i believe there is supposed to be an o-ring on the plug thats on the crossover tube. Does anyone know if there's supposed to be an o-ring on that plug - i do see a ridge for an o-ring, also whenever i contact Ford they dont seem to have any clue of what i'm referring to when i say "plug"... Car keeps on overheating about 10-15% above the halfway mark - it never overheats completely but does run a little hot . . . i've been cycling and adding coolant as needed. everytime i take the plug out though, it seems like the coolant is to the top. Any suggestions ? - what started the problem was a hose slipped off and let a lot of air in the system. After a radiator flush, the car now always overheats a little. *** I did change out thermostat and water pump already. Last edited by joojoo84; July 9th, 2010 at 03:36 PM.

July 9th, 2010, 04:04 PM	#2
Mach Boy MM's Orangest 2004 Mach 1 Mustang Join Date: Sep 2007 Location: Indy Posts: 2,846 Blog Entries: 1 iTrader: 1 reviews	I took mine to Ford to get the air out. There's a lot of people who do their own stuff that take it to the dealership for a fluid change just because it's so hard to get all of the air out of these DOHCs. As for the O-ring I don't think there is one. It's just the plug. __________________ Looking for 03/04 4V ABS Wiring Harness Connector/Incomplete Wiring Harness (with ABS connector)

July 9th, 2010, 04:19 PM	#3
joojoo84 Regular Join Date: Mar 2007 Posts: 61 iTrader: 0 reviews	Funny thing - I took the cobra to Ford and they attempted to bleed the system and couldnt get the air out. They just told me to do the same thing I had been doing and it will eventually work itself out... I've never had a manufacturer tell me something like that . . . its just frustrating. Anyone else know if there is an o-ring on the plug or if they just let the ford dealership bleed the system? ALSO - it seems like coolant is leaking out of my plug a little bit. None of the threads are messed up and i make sure its pretty snug - anyone have any idea where i can get another plug? Last edited by joojoo84; July 9th, 2010 at 04:25 PM.

July 9th, 2010, 04:34 PM	#4
98Cobra_sleeper Enthusiast 1998 mustang cobra Join Date: Jul 2009 Location: pa Posts: 617 iTrader: 0 reviews	i dont think there is an 0-ring. i didnt' see one when i had mine out last. i let mine run and loosen it a lil and a bunch of bubbles keep coming out. then i drive the car again and stop and bleed it out again. i repeat the process over and over again. it does take a while to get all of it out. __________________ HP twin turbo - 691hp/608tq with 15lbs huffed in (old setup) comin soon...ON3 turbo kit, PTE7175

July 9th, 2010, 05:39 PM	#5
Mach Boy MM's Orangest 2004 Mach 1 Mustang Join Date: Sep 2007 Location: Indy Posts: 2,846 Blog Entries: 1 iTrader: 1 reviews	You could have a bad cap for your reservoir. You can give Tousley Ford a call. They usually have the best dealership price you can get. __________________ Looking for 03/04 4V ABS Wiring Harness Connector/Incomplete Wiring Harness (with ABS connector)

July 9th, 2010, 06:54 PM	#6
joojoo84 Regular Join Date: Mar 2007 Posts: 61 iTrader: 0 reviews	replaced the cap on my resevoir as well . . .

July 11th, 2010, 11:24 PM	#7
joojoo84 Regular Join Date: Mar 2007 Posts: 61 iTrader: 0 reviews	ok . . . so, in conclusion, the cobra now only overheats when cruising at low speeds (35 mph and under) could this be radiator possibly?

July 12th, 2010, 12:10 AM	#8
Mach Boy MM's Orangest 2004 Mach 1 Mustang Join Date: Sep 2007 Location: Indy Posts: 2,846 Blog Entries: 1 iTrader: 1 reviews	Is your radiator fan turning on? __________________ Looking for 03/04 4V ABS Wiring Harness Connector/Incomplete Wiring Harness (with ABS connector)

July 12th, 2010, 12:58 AM	#9
joojoo84 Regular Join Date: Mar 2007 Posts: 61 iTrader: 0 reviews	It is ... At idle anyways...the condenser fins are really messed up and i think airflow is gettin blocked to the radiator (which is already a 10 year old stock rad)

July 12th, 2010, 09:52 PM	#10
joojoo84 Regular Join Date: Mar 2007 Posts: 61 iTrader: 0 reviews	Ordering an 03-04 cobra radiator. I'm also gonna pick up a new coolant reservoir (probably canton or black moroso) also with low temp t-stat. Anybody have suggestions on coolant reservoir and also on coolant panel?

July 18th, 2010, 10:37 PM	#11
joojoo84 Regular Join Date: Mar 2007 Posts: 61 iTrader: 0 reviews	Here is the part# for crossover plug: F3LY-8A500-A It is a Lincoln part number and it DOES come with oring as well.

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