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1990 Volvo 240 only runs with maf disconnected

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90

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JumpinJax
Posts: 1
Joined: 8 March 2025
Year and Model: 1990 240
Location: California

1990 Volvo 240 only runs with maf disconnected

Post by JumpinJax »

I have a 1990 Volvo 240 (LH 2.4) that runs with the mass air flow sensor disconnected, but not with it hooked up. I found i have very low voltage on the MAF at terminal 3 (.4 volts). I'm looking for any help trying to figure out what's going on!

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