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86' 740 turbo hard warm starts and rich fuel

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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burtmusson
Posts: 3
Joined: 22 December 2011
Year and Model: 1986
Location: san jose

86' 740 turbo hard warm starts and rich fuel

Post by burtmusson »

Hi, just joined the forum. I want to first tell you that I have owned a bunch of 740's but never ran into this problem before.
I can start it cold but it sounds blubbery at first then clears up but wet exhaust dripping out the tail pipe. Seems it is running too rich. I can't get it to run if I turn the key off and have to wait for it to cool before it will start again. Any help is great.

burtmusson
Posts: 3
Joined: 22 December 2011
Year and Model: 1986
Location: san jose

Post by burtmusson »

If anybody runs into this problem the temp. sensor is your best place to look. After thinking hard and checking everywhere but there
I found it. I thought the fuel pump relay at first,then after changing it, nothing changed so I kept going through the process of removing the possible components. Anyway thanks !

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