1990 Olds Delta 88 Brougham blower fan won't work.

This is a very common problem on GM vehicles. The security system is known to fail. Basically when you insert your key, the system checks for certain OHMS resistance. If the system cannot get the correct signal from the key, it assumes the key is incorrect and goes into SECURITY lockout mode. (prevents hotwiring) This has been happening with GM;s for a very long time. There are ways to bypass this now. Read through this page for info, solutions as well.

http://www.diy-gm-security.com/

I have be unable to locate a diagram for free, however the owners manual is available on eBay, here is the link to the auction site. 1988 ORIGINAL OLDSMOBILE OLDS DELTA 88 98 REGENCY OWNERS MANUAL SERVICE...

Battery

It will be difficult to find (not to mention expensive) the required refrigerant for your year car. I suggest taking the car to a mechanic to have this serviced. But if you want to DIY then go to auto parts store and get the r134 conversion kits. Note: the freon in your car is hazardous material and need to be properly disposed of.

Hard to say on a older car such as this. If running well and healthly it should receive around 16 to 18 highway miles per gallon

replace blower control module

any gm olds , buick caddy, pont, 4speed auto up to 1991 u just got make sure theyre not computer controlled some 91 are n some aint stay away from 84 to 88 they had failures it doesnt really matter about engine size as along its same transmission

check for a bad battery connection or bad battery and then the startet the fuel pump wont keep it from turning over

replace the blower speed control module located near the blower motor

1996 olds lss .no heat from vents which seem blocked.The fan runs