99 Cobra oil in coolant & is also leaking coolant

Ike Turner

Ike Turner

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I just bought this 60k mile Cobra 2 weeks ago & I love the car so far, but I have a couple of issues that I just noticed & need to address them...

I'm losing oil & appears to mixing in the coolant. This is the biggest issue with my Cobra so I'll tackle it first. I have searched & seems as though the oil cooler is probably the culprit. There is no coolant in the oil in crankcase (oil on dipstick is normal & car has plenty of power).

Do any of you guys have a good 99-01 oil cooler for sale? Instead of rebuilding, I'd like to swap the whole unit with a known good one. I have paypal ready to send so I can fix my "mistress" as my wife calls it :shrug:

I am leaking coolant from what looks like the water pump as well, but is that because the system is being force fed oil or should I replace it anyway?

The other issues are sticking/hanging idle & vibration at highway speeds (car has sra swap with 4.10's.

Mods that I am aware of are:
JLT intake (in the mail), it has a k&n cone filter on the end of stock tube now
42lb injectors (why I dunno)
Full exhaust (Long Tubes, o/r x, dual flowmasters or magna flow's)
Solid rear axle with 4.10's
Stock wheels (looking to buy a new set if you wanna sell a 17x9/17x10.5 set)

Any help/advice is greatly appreciated guys & if if you'd like to go a step further in helping, give me a shout 251-288-7082 Ike
 
Ike Turner

Ike Turner

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99Cobra_vert

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I am doing an Eaton swap on my '99, and I will have my oil cooler with 6k miles for sale. Shoot me a PM if you still need one.

Jake
 
JorgeM

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im not sure i just bought a used cooler and had some1 install it for me
 
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Black*Death

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Ike Turner said:
I just bought this 60k mile Cobra 2 weeks ago & I love the car so far, but I have a couple of issues that I just noticed & need to address them...

I'm losing oil & appears to mixing in the coolant. This is the biggest issue with my Cobra so I'll tackle it first. I have searched & seems as though the oil cooler is probably the culprit. There is no coolant in the oil in crankcase (oil on dipstick is normal & car has plenty of power).

Do any of you guys have a good 99-01 oil cooler for sale? Instead of rebuilding, I'd like to swap the whole unit with a known good one. I have paypal ready to send so I can fix my "mistress" as my wife calls it :shrug:

I am leaking coolant from what looks like the water pump as well, but is that because the system is being force fed oil or should I replace it anyway?

The other issues are sticking/hanging idle & vibration at highway speeds (car has sra swap with 4.10's.

Mods that I am aware of are:
JLT intake (in the mail), it has a k&n cone filter on the end of stock tube now
42lb injectors (why I dunno)
Full exhaust (Long Tubes, o/r x, dual flowmasters or magna flow's)
Solid rear axle with 4.10's
Stock wheels (looking to buy a new set if you wanna sell a 17x9/17x10.5 set)

Any help/advice is greatly appreciated guys & if if you'd like to go a step further in helping, give me a shout 251-288-7082 Ike
Click to expand...

The leaking water pump is a concern to me. Many pumps have a weep hole to let you know they are failing....
 
blacksheep-1

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FWIW I have a 99 IRS for that car, it has 125K on it. It is a 28 spline , not the most desirable but it's all stock, and the right one for that car.
 
Ike Turner

Ike Turner

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JorgeM said:
nvm this actually didnt work out for me lol
Click to expand...


So after the replacement oil cooler was installed, you are still losing oil into the cooling system?

I am going to install my mach 1 style adapter & mach 1 lower radiator hose & I will report back if it solves my issue
 
Ike Turner

Ike Turner

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JorgeM said:
alright let me know how it turns out for you
Click to expand...

My issue seems to be corrected Jorge. At the advice of NA SVT, I installed a used Mach 1 oil filter adapter & Mach 1 lower radiator hose ($8.99 local parts house). I also bought a new cobra oil filter adapter gasket ($5.99), but the old one is reusuable

The way the Mach 1oil filter adapter is machined, the coolant & oil is separated by metal & not an o-ring thats prone to failure.
 
Ike Turner

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JorgeM said:
can u explain more plz
Click to expand...

Pics are worth 1000 words right :beer:

Mach 1 adapter/housing

mach1adapter_zpsa8d1aa25.jpg


Side by Side shot

oilfilteradaptercomparison_zps885c9936.jpg


Notice the Mach 1 part completely separates the oil & coolant. The way it is machined, its nearly impossible for them to mix again. It would leak on the ground first.

I bought the Mach 1 piece from a forum member (damn good deal too!)
Went to local parts house & purchased 2 gallons of coolant (I swapped my water pump also at this time, because it was leaking), new cobra oil filter
adapter gasket ($5.99 old one can be reused though), 03-04 Mach 1 lower radiator hose ($8.99, this goes from the thermostat to the new adapter), and a new oil filter (might as well swap it since you're right there lol).

Install it all, berp coolant system, & enjoy your car with no more oil/coolant mixing :coolman:
 
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