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There were wishes to make new topic with updates.
Problem: 1992 940 b230fd with automatic started to rise fuel consumption.
Ive owned car 5months. First two months mpg at mixed driving was 25mpg. Now even 100% highway it goes about 24mpg and mixed is near 18mpg.
This is not my first volvo with this technic and this is too bad mpg.
Car runs well, idles well, starts well hot and cold, wont bog or hesitate or nothing. No fault codes, many times checked.
What ive check:
-Brakes wont drag or stuck
- No exhaust leaks, new manifold and flange gaskets. Cat is old but passed well emission tests after i bought car
- New bosch o2 sensor and ive tested it by multimeter and it works
- New ect sensor
- Spark plug, wires and rotor new, cap good condition. Plugs are white not black
- FPR tested with vacuum pump, no leak
- Egr works, pulsair blocked because valves leaked
- Automatic works well, red fluid, wont slip, tcc works
- No fuel hose/line leaks and new fuel filter
- New intake manifold and vacuum hoses
- Vacuum gauge test gived steady 22hg and ive ultrasonic cleaned injectors, no vacuum leaks
Maf shoudl give 1.4v at ignition on and 2.3v at idle. Mine gives 1.49v and 2.48v, resistance test passed.
Help me? And thank you for all hints and tips as far!
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