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1992 Volvo 940 - Page 2 Questions & Answers
How will I know if my fuel filter, pump or both are bad?
Fuel system pressure testing usually will reveal the answer to that question. If your car has the Regina system it will have one pump in the tank. If the pump fails, the car will not start. If the fuel filter is partially blocked, the car usually will start but will lack power and have poor fuel mileage. For the Bosch system, which has two pumps, read on.
If your car has the Bosch system then it will have two pumps. One pump is under the driver seat and the other is in the tank. The pump under the driver seat is the main pump; if it fails, the car will not run. If the tank pump fails, the car will run but the main pump will be very noisy. Additionally, the car generally will bog down making right turns as the fuel sloshes around in the tank without the rear pump working when it's under a half tank of fuel.
The easiest way to tell if your car has the Bosch system is if you have a MAF (Mass Air Flow meter) connected to the air intake plumbing with a six way connector coming out of it and your ignition coil is a traditional-looking can-shaped unit bolted to the passenger side strut tower.
The easiest way to tell if your car has the Regina system is by looking at the ignition coil - it will be square and bolted to the driver's side strut tower near the intake air filter. Also, the intake air filter will have a two-wire harness connected a temperature sensor at the air box instead of the MAF.
Srs code 7 or 2-3-2
***WARNING*** working on the SRS is dangerous if procedure is not followed exactly. Read this carefully:
Electrical Air Bag SRS, and follow it to the letter. Depending on year your reset procedure for the SRS may vary, either by using the diagnostic connection under the hood or by using a jumper wire on the SRS test connection in the main electrical distribution block behind the ashtray.
2-3-2 is the OBD1 code for Incorrect Mixture Ratio: The system has compensated swiftly by additive computation and is at adaptive limit (too rich, check fuel pressure regulator and its vacuum connection to start). The other code (2-3-1) means multiplicative adaptation has taken place at idle (slow adaptation) and is at limit. Both codes usually indicate the oxygen sensor is no longer doing its job or there are major vacuum leaks in the system, usually near the intake manifold or throttle body.
Squeaking noise turning
Probably a wheel bearing or wheel cylinder. Could also be a problem with the steering column/rack. Might be low on PS fluid?
Does this happen when turning both directions?
Car stalls while driving...starts right up
I could help if you could provide some more detail:What does the car do just before it stalls?Does it misfire before cutting out?Does it simply die right away?Does it do this when the gas is below a half a tank?
I have a 1992 volvo 940 and the radio lock up when
Ring a major volvo dealer. If you give them your engine or chassis number they should be able to provide you with the unlock code providing the radio is the original one fitted when new. Enter code using preset station numeric buttons. Write the code on the back of your sun visor for next time
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