drew2007

ok so today while i was driving my 86 firebird s/e it started bouncing the entire car when i was trying to take off in first. This car has a 2.8 and a 5 speed manual. i have no idea why its doing it and i hope its nothing too seriouse..but i have also noticed that if i drive the car and shut off go into the store and come back out and start it up again it idles rough and very low like it wants to die..anyone got any ideas on what these things could be?

Damon

If you take off fast from a stop does it sound like something going "thump" through the floorboards? If so you have a ripped transmission mount. These cars are NOTORIOUS for shredding transmission mounts. Looks fine just sitting at rest but push up hard on the tranny tailshaft and the whole dransmission will lift off the transmission crossmember.

Yes, even the V6 cars. I had a 91 Camaro with the 3.1 and an automatic that ate 2 tranny mounts in 5 years.

If it's not that you have engine or possibly clutch issues. More likely clutch if it only does it taking off from a dead-stop. It's also possible it's a clutch AND a trans mount issue working together to make your 1st gear starts a misery. Check the trans mount first, go from there.

drew2007

well its more of a ratteling of the entire car more than it is a bounce, sorry for using the wrong wording lol. it doesnt do it all the time but only a great once and a while. but other than that i dont hear any thuds under the floor boards. and it only does it if i take off slowly, if i bring the rpms up high then it wont do it.

Brando5641

iTrader: (-1)

fubar flywheel

drew2007

but if its the flywheel wont it do it every time and not just every now and then?

Brando5641

iTrader: (-1)

I had a 302 fox mustang with a wc t5 and had this problem. Flywheel looked like a potato chip.

drew2007

well crap, i was hoping it was something simple lol, not something that i dont have the money to do or the tools to fix it

drew2007

but what would be causing the car to idle differently after i drive it then shut it off and then restart it?

Brando5641

iTrader: (-1)

It could be a bunch of things but that same POS mustang had a bad ground and did that same thing. Start it up ran hard and good, hit a bump it would have 0 power and some times die. Pull over start it up and it would just do that over and over.

Not sayen thats what it is just somthin that has happend to me.

drew2007

that would suck lol. but when i first start up the car it runs great and runs great the hole time its running..until i shut it off..then when i start it back up and go to leave it idles really low and acts like it wants to die but very rarely ever does..