ok this time its different. the car is an 88 merc.grand marquis.

problem with the car is when you push the throttle the car starts to have a kinda jiggle or bounce to it. but when you let off the gas it stops...wtf... under braking nothing...only when pressing the throttle does it do this. just started today. any ideas???

thanks

 

Time for a tuneup? Bad motor mount perhaps? Or check for vacume leaks.

My 92 Astro van had a bad vibration during idle. Turned out to be 2 vacume lines turned into a gummy bear and failed. Replacing them cured it.

Hurst

 

it doesnt do it at idle. only when you push the gas.

i was thinking like a tranny mount, or a motor mount. have to check them both...


i had an 86' Iroc, and broke the tranny mount and the shifter started bouncing up and down....idk

 

Not sure what you mean by jiggling and bouncing but, assuming it's an automatic, check the tranny fluid, you could be low and sucking up bubbles.

 

yes it is an automatic, sorry bout that. ill check it and see what its at

thanks

 

ok i replaced the tranny mount and the spark plugs. made sure to gap them before installing. numbered the plug wires and all...got everything back together, and started the car. car ran for like 3 min and then died. car had almost no fuel, so i figured that it was out of gas, went and got 3 gallons of gas and put it in the car.

and now the fugin car wont turn over. it will crank all fugin day, but wont start...wtf???

any ideas....

i took the cap off the schrader valve and pressed it down while cranking the car and with the key in the on position. no fuel came out???why

 

fuel filter is probalby clogged. it is located on the passenger side frame rail under the rear door.

 

thanks. i will be out of town all weekend , but will check it when i get back. i was getting pissed yesterday and had to stop before i started breaking shit...

 

thanks man. thats what it was. replaced it and car cranked right up.

rep 4 ya