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1989 Volvo 740 gl- trouble light alternative method

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Old 04-25-2018, 07:14 PM
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Default 1989 Volvo 740 gl- trouble light alternative method

Hi I'm having trouble with the trouble code light box as it doesn't seem to work at all making it hard for me to diagnose my recently on check engine light, is there a way to get the trouble code without using the onboard obd1
 
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Old 06-03-2018, 12:02 AM
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Well, not really. The OBD1 is unreliable. Any driveability problems, symptoms? Disconnect the battery for a few minutes, this will erase the light, see if it comes back. If not, and the car drives OK, then no problem.


Also, better move your question to the 740/940 section...
 
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