I have a 1990 Mustang GT Convert. It is basically stock with the exception of a free flow air filter, underdrive pulleys, and MAC 1 5/8" headers. The car has new sparkplugs, new wires, new coil, and new fuel pump, filter and fuel pump solenoids.
The car has been running rough for at least 8 months. I have taken it to various Mech. and nobody can figure it out. Some days it runs awesome...it really pulls...most days it runs like crap...no power..sluggish.
About 1 month ago it started just dying out in 3rd gear..what it does is that the speedo and tach go down to zero and then back up again. Kinda like somebody was turning off the engine. Sometimes ill be lucky and it will go away and I can go on with my day...other days it will just die and I will have to coast to an open lot. At that time, it will take about 3-4 turns of the key and engine turns to start up. Then it may run ok...or like its going to die.
It just came from a mechanic and he says the number 4 piston has a "hole" it it. He also says that that piston had 25% psi on a compression test. He also said that that piston on a "blow by test" had 100% blow by??? I later chacked and noticed that that header bolt near that piston was really loose.
But CORRECT ME IF IM WRONG....yes all that would make the car run bad...but would that make the car's tack and speedo die in 3rd gear?
I dont know...I dont trust the guy. But the bottom line is that I have gone to 5 mechanics and no one can figure out what wrong with my car. I get charged all kinds of money for checking the car and the results are they dont know.
I really need help...thanks guys...If anyone wants to call me please do so at 813-598-2902 thats a Tampa Florida number.
Thanks again
Ernie the Eyeball
The car has been running rough for at least 8 months. I have taken it to various Mech. and nobody can figure it out. Some days it runs awesome...it really pulls...most days it runs like crap...no power..sluggish.
About 1 month ago it started just dying out in 3rd gear..what it does is that the speedo and tach go down to zero and then back up again. Kinda like somebody was turning off the engine. Sometimes ill be lucky and it will go away and I can go on with my day...other days it will just die and I will have to coast to an open lot. At that time, it will take about 3-4 turns of the key and engine turns to start up. Then it may run ok...or like its going to die.
It just came from a mechanic and he says the number 4 piston has a "hole" it it. He also says that that piston had 25% psi on a compression test. He also said that that piston on a "blow by test" had 100% blow by??? I later chacked and noticed that that header bolt near that piston was really loose.
But CORRECT ME IF IM WRONG....yes all that would make the car run bad...but would that make the car's tack and speedo die in 3rd gear?
I dont know...I dont trust the guy. But the bottom line is that I have gone to 5 mechanics and no one can figure out what wrong with my car. I get charged all kinds of money for checking the car and the results are they dont know.
I really need help...thanks guys...If anyone wants to call me please do so at 813-598-2902 thats a Tampa Florida number.
Thanks again
Ernie the Eyeball