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Ok i cant think of any other way to explain it but when i floor it from dead stop or under 10mph the engine jumps/lunges like its trying to get out of the engine bay and i hear a thud like the engine landing back into the bay. the pedal gets sucked down away from my foot until i release the pressure. when im crusing anywhere around 20mph or so it doesnt do this at all when i floor it. i did it when taking a turn around 10mph and the car did the same thing but i heard a grinding noise almost like a starter grinding.
this only happens for a second or so because i let go of the gas immediately cuz i have no idea whats going on
its a 289 with an automatic transmission and edelbrock 1406 600cfm carb
this doesnt happen when im in park and i floor it, it revs perfectly
i got no ideas
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1968 Mustang Coupe
289 Edelbrock 4 bbl
Dual Purple Hornies Exhaust
2005 Mustang Coupe
5 Speed V6
Sounds like a broken motor mount to me. It won't do it when your in park, but in gear your putting torque to the motor. That's what my previos Mustang did when I broke a motor mount.
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1966 Mustang Coupe
Ford Racing 5.0 HO Motor/B303 cam/1.7 RR
TFS TW Heads/Edelbrock Perfor RPM/Holley 650 DP
Mallory Dist/MSD Blaster/Holley Electric Fuel Pump
2.5" Exh H pipe/Flowmasters 40's/Dr.Gas Tailpipes
Lakewood T/A Bars/Aluminum Drive Shaft + loop
Auburn 3.55's/SSBC disc's/C-4 wTCI 2800 stall
Fiberglass hood/trunk/bumpers!(100% Sicilian)
If you take it to the third story and drop it just right it will clearance itself. Might not be pretty or functional when its done, but it would be in there.
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Who cares how much horsepower it has, all that matters is how fast it goes!
13.20's with 2.25-2.30 60's, 40+ year old suspension sucks!
Best trap 107.11mph, we'll see what the new intake/carb setup does.
12.80 at 110.5mph NHRA DA corrected
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2001 stock gt 5speed...they all come stock with the nitrous bottle in the trunk right?
1966 mustang auto, v8, air, ps, pb, needs paint and a bottle in the trunk.
You might not "see" anything. What happens is that the rubber either splits or comes loose from one of the metal pieces of the mount. With engine torque it rocks over and when it plops back down it is in the same spot it should be. Hook a hoist to the motor and pull (But gently) like you are pulling it out of the car. A broken mount will be obvious. You could also put a block of wood under the pan and gently jack up on the motor, but you could also dent your pan.
no they are broken....check better....You might even try jacking the engine up carefully from a strong point on one side (I have not broken anything yet by carefully using 2x4 and placing one end on the radius of the oil pan lip where it bolts to the block on the front of the engine near the timing chain cover...use the bolt heads on the radius for support be careful other end goes on the jack.)
Its going to be the drivers side that is broken... start there inspect with good lighting
-Gun
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Masters of Industrial Technology intelligence thats why I own guns made to drop elephants.
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My engine wants to jump out of my car
