I have a 94 olds 88 royale 3.8 engine, I had the car diagnosied and all that came up was a tune up! But my check engine light is still on and the car shuts off while driving! I was told that no codes are coming up at all! So I'm asking for ur advice on what the problem may be

Have the ignition control module tested ! GM Type Ignition System Troubleshooting Diagnosis and Repair by Wells EM

Air pump/Smog pump and Compressor go on first, on the shaft. Power steering goes on next Altenator is the last one. After market pulleys and the above mentioned parts may change this order.. 1983 olds delta 88 royale

No --

For 1994 Oldsmobile 88 3.8L SFI OHV 6cyl the Engine Control Computer is located front seating area, passenger side, under dash, mounted above kick panel.

Hope helps (remember to rate this).

some cruise controll systems use the center high mount stop lighy [third brake light] as an input for the cruise control if its not working the cruise wont either. all fault diagnosis would conclude that if everything checks ok then the computer is at fault. but i would dought all checks ok. a skilled mechanic should be able to diagnose the problem in 1.5 hours and that is a generous time alotment.10 hours is extreme. so mabee a second diagnosis should be performed

I would check the crankshaft and camshaft sensors. I don't think the connections are wrong, they really only go on 1 way.

It is time for struts (Shock absorbers) or more, have it checked by a suspension specialist, cars get dangerous when they have worn front end parts, not something to mess around with, and your car it at an age,,, Hope this helps, stay safe!

Here's a link to the serptentine diagram for our '94 Olds 88 Royale...

http://www.gates.com/common/part_locator/view_diagram.cfm?id=S6005

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

bad rod bearings time for a new engine