What could cause my 88 Mustang GT to mysteriously lose antifreeze?
Discuss What could cause my 88 Mustang GT to mysteriously lose antifreeze? on AllFordMustangs.com, the place for Mustang enthusiasts.
Welcome to our Mustang forums where Mustangers come together to hang out, discuss and enjoy their favorite Mustang hobby with fellow Mustang enthusiasts. We invite everyone to read, post, and enjoy our Mustang forum as well as the many other sections of our site.
You are currently viewing our forums as a guest. By joining our community you gain access to post topics, communicate with members, upload your photos and access many other special features. Registration is fast, simple and free so why wait, join our Mustang community today! If you have any problems with registration or your account login, please contact support.
My 88 Mustang GT is mysterisly losing antifreeze? I'll wake up in the morning fill it up drive around then have to fill it the next morning. I realized the problem, had it pressure tested and they said it was blowing out of the neck or the radiator and that the cap was bad. The guy being a friend of mine replaced it with a heavy duty radiotor, not name brand, and the same thing is still happening. I replaced the thermostat with a 180d then he replaced it with a 190d. I brought it back to get another pressure test, he ran it for 2hr!! and NOTHING SHOWED UP!? But there has to be something wrong with it!! One thing that might be helpfull is that i was driving on the highway for a while after just filling it. Came home then let it cool, checked it and it was dangerously low. So heat i'm guessing is a factor. My mechanic friend said that since i have E303 cams that maybe that is the reason. IDK, please help!
In case it helps, MOD's
1988 Mustang GT Hatch
-H-Pipe w/ Cats
-2 Chamber Flowmaster
-B&M Short Throw Shifter
-I think i have bigger injectors not sure of size
I second the motion on possible head gasket. Same thing happen with my g/f's car ('99 Olds Cutlass, 3.1L-prone to headgasket problems). She would drive a little and low coolant came on...so we filled it up. Day and a half later light came on again, told her to have it looked at since the car was still under the initial 90 day warranty. Ended up being busted intake gasket. it was leaking slowly as she drove and burned up once it hit the block. Could notice the smell, but it wasn't too strong.
I have a 94 and the same thing was happing to me.Could not find a leak
under or around but at times could smell anti freeze.Turns out I found the leak behind the timing cover, it would hit the block and dry. Hopes this helps.
94 GT - 65 tb, kn filter, Edelbrock upper lower, flowmasters, saleen springs,dual piston calipers,AODE trans with reworked
valve body.Heads to come.
Thanx, there are no leaks around the car at all, I checked that. But i'll have the head gasket checked out. My oil is fine, so it's not leakin into there. And I dont smell anti-freeze. Thanx for the help, I hope it's not to expensive to fix
i think i may have the same problem, i guess i will have to look into it when i swap my intake.the motor is new though,and so is the heater core.
89' LX new motor, from pan to intake,e-303 cam,gt-40p heads,1.6 roller rockers,2 chamber flowmasters, MAC catalytic h-pipe,24lb inj.C&L mass air,stock intake , 65mm t.body,FLUIDAMPR,new egr,tps and iabp,190lph BBK pump, Adj. Regulator,160 amp alternator