New to fourm and need help with car

[mrsvo]

whats up guys i just recently got my dirty little hands on a beautiful 84 SVO, and recently i have been having some problems...

the first problem was that it wouldnt stay running and i couldnt find the problem but come to find out it have a vaccum leak were the intake tube off the turbo wasnt sealed so i temperarly fixed it by just putting the VAN(MAF??) box directly on the turbo with a coupler and it ran fine nut now after running it a week and a couple cruises to houston it is acting up again??? when i first start it, it idles up to 1,000rpm then dies, then when i finally get it running it idles at 1,000 then sometimes idles up to 2,000rpm on its own, and other times it just dies if i dont countinuly give it gas, could it be that i need a tune? i know im getting enough fuel pressue, the gauge stays at high 30's, low 40's Oh and when it finally stays running for a while pretty good it starts to idle down to 850rpm?? and idles really choppy, and when i was messing with the VAN box i stuck my finger in it and opened the door slightly and it started to run perfect until i removed my finger then it went right back to the choppy idle then eventually dies....

NEED HELP PLEASEE, and if you want you can email me at [e-mail]
Thanks, Cameron

[Stinger]

You need to pressure test the system to locate any more vacuum leaks (if they exist). It will never be right if there are any leaks. You can make a "cap" to pressure test it out of a pvc pipe cap and a fitting for an air compressor hose. Clamp it into the system at the throttle body and pressure it up to 20psi or so.

Scan for codes (code scanner tool is $20 from parts store, eec-iv tester).

After you get codes, report back.

[mrsvo]

well do i will go out right now and hook my dads computer and test for codes

[mrsvo]

how do you check for codes?

[Stinger]

Plug the scanner into the diagnostic port (near the passenger side strut tower) and then do as the scanner says. Different scanners require different steps after this point.