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> Fault Code 131, 740gl
Kimjc
post Mar 23 2006, 11:24 AM
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Location: Albany Ga.
Drives: 1989 volvo 740gl
Turns over but won't start . Fault code 131 . replaced crank position sensor and still won't start. What do I check now ?
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Kimjc
post Mar 27 2006, 08:53 AM
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Drives: 1989 volvo 740gl
I replaced cap and rotor . I am getting fire into coil , but nothing coming out.
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T5Mikka
post Mar 27 2006, 05:24 PM
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Drives: 1996 Volvo 850 T5
Engine RPM sensor - no RPM signal - or faulty signal

The Turbo models in 89, have a hall effect sensor in the distributor (I think). Is your car a turbo?, if so check that sensor.

Otherwise check all wiring, clear the faults from the ECU memory and try starting you car again let us know if it logs the same fault code again.

Also check all sockets on all looms under the bonnent your be suprised how bad these can get.
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VOLVOCHAT
post Apr 15 2006, 05:39 PM
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Drives: 91 945T, 90 780T, 95 850T
check power stage on inside fender near battery negative post...
do not touch when motor running..gets hot..fast
remove stage..clean fender..sandpaper..check wires..
while there check ballast resistors for injectors..clean connectors
check ignition coil with ohmmeter

put old plug in plug wire..lay on valve cover...crank
if no..flywheel sensor(flywheel damaged?)..power stage..coil..
put noid light in one of the injector connector..crank
if no..injector relay..switch with aux fan relay (same) for test
any fault codes in system...???
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