List of problems i need some help with.

[Radam]

I've got a few problems that i don't have a clue about. Its a 1991 plymouth laser rs turbo with an 16g turbo, manual boost control, and a 3 inch down pipe, all of which where installed by the last owner. The problems are as follows:
1. after starting the engine when its cold the rpm's fluctuates when driving, but it stops after the engine warms up.
2. i have to add b/w a quarter to half a litre of oil every 100 to 200 km but this will go on for about a month then quit and use hardly any oil at all.
3. whenever i turn the wheel i can hear a squeaking from the front, i tightened the power steering belt but it didn't do anything.
4. at odd times shifting becomes alot less smooth and it grinds going into 4rth from 3rd

im fairly illiterate when it comes to cars so any help is greatly appreciated.

 

[faracon]

My first move would a compression test for the first 2 things.

 

[thrdtryGSX]

try to find the answer here http://www.vfaq.com/index-main.html there is a lot of good info about DSM's.

 

[thrdtryGSX]

does the engine speed change under acceleration? at an idle?

 

[crazyboost]

About your grinding gears...when does your clutch pedal engage off the floor? about 1/3 of the way up or sooner? If it engages too soon (right off the floor) then you should adjust it and hopefully that will take care of the grinding, check out the link below for adjustment. If that doesn't solve the problem it could be your syncros are bad. Changing your tranny fluid can usually help this a little bit, use gm or penzoil syncromesh, my tranny shifted a little smoother after changing the fluid.


http://mywebpages.comcast.net/njdsm2/clutch.html