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1990 Oldsmobile Cutlass Ciera Questions & Answers
My 1990 Oldsmobile Cutlass Ciera
Take it to a qualified repair shop an have it checked out , could have DTC'S - diagnostic trouble code's stored . Or it could just need new plug's & wire's ,fuel filter etc....
When vehicle warms up it just shuts down
The engine starts in "open loop" mode with factory default settings in the ECM. When it warms up, it goes to "closed loop" operation and relies on the O2 sensors to adjust timing, fuel, etc. Check for error codes (DTCs) using an OBDI code checker, or consider replacing the O2 sensors.
How do u know if the speed sensor is bah
You might hear a slight to very loud whining or squeal coming from sensor on transmission when you accelerate or your spedometer will be acting faulty if working at all.
Turn signals won't light up or flash
Test the arn?s on the light side. If you got juice there . Then replace the hole deal. If you dont get anyrhing. The is your turn anddle stick.
The heater blower works but we only get a small amount of air
I would say, check the engine coolant temperature, if that's okay, check water flow trough the heater core. If the coolant temperature is to low replace the thermostat. If the water flow is to low though the heater core, it must be partly blocked, and should be replaced.
Why do engine over heat ?
Sounds like the cam timing and or ignition timing is retarded, start with checking this. After your have done that, do a head gasket leak test before to take engine a part.
What tools do i need to change fuel filter and where is the filter located at on the car?
The only true tools you need is your hands, pliers/blade screwdriver. The fuel filter is located in the undercarriage rear adjacent to the left side of the fuel tank. It is bolted with a singular screw onto the uniframe just to the side of the rear-left wheel. The filter is equipped with quick-release connecters that require a firm grip and tug, releasing the fuel lines from the filter. You might want to use a fat blade screwdriver and/or pliers to pull back the connecters, only don't use too much force as this will crack the plastic keepers, defeating the entire job. Be patient but firm and all will work out.
1990oldslocation cutlas cierafuse diagram
A good place to start for the location of the fuse for your horn is in your owners manual. If you don't have one you can find the book for your specific car at auto zone or oriely's or any parts store. As for the fuse that keeps popping as soon as it is replaced, it could be that you have a power wire that is being grounded out somewhere causing the fuse to pop. One other problem might be the amperage on the fuse is too small. Good luck
Where if fuel pressure test port 1990 oldsmobile cutlass ciera 4 cylinder - O2 sensore read code 44
The internet is filled with all sorts of OBD1 Code 44 info to read
Bad Egr Valve --letting unmetered air in
Vacuum Leaks in the Exhaust Before the O2 Sensor
Bad Oxygen Sensor or corroded wiring
Vacuum leaks anywhere
Fuel Pressure too low
& more
You'd have to tee into the fuel filter to use a fuel pressure gauge,
if you got no shrader valve on the motor
You changed a fuel pressure regulator-- in the throttle body?
You won't see much with a scope on that system, if you scope
the O2 Sensor,their sort of slow compared to OBD2
1990 oldsmobile wont start
Chances are its an ignition problem if nothing happened by using starting fluid. Have you pulled the plug wires and checked for spark ?
Cutlass ciera wont start
Does the starter spin the motor at normal cranking speed? If there seems too much friction, try turning the engine over by hand to check if the engine turns freely. Put a socket and wrench on the center crankshaft pulley bolt and turn clockwise. If you cannot turn the crankshaft with a wrench easily, then the starter can't either. Turn the crank all the way around to check for something preventing cranking.
Is the battery still enough power to crank at normal speed? If it's already too low, recharge it, and try again.
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