Question about 1990 Volvo 740

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Hi when I try to start the car it will try to start but will not stay running for more than a seccond or two. I can also smell fuel like it is flooded. I got a new temp suncor dor the computer but I am not sure where it goes. Can you tell me where to find it on the car? thank you This is for a 1990 Volvo 740 turbo intercooled

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Hello, My name is Dan. I am not a mechanic. However, I've owned 2 of the same Volvo's. While I don't know right now where the temp sensor is located, I will share a previous experience (cheap repair) of mine. Sometimes, you can get a pin hole or other leak in the hose from the gas cap to the tank. This will cause the fuel smell & to loose pressure in the system. Also, anywhere else along the fuel system is susceptible to leakage. Check wherever there are clamps.

Posted on Sep 14, 2010

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... you smell fuel after trying to re-start when it dies.

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... you smell fuel after trying to re-start when it dies.


Disconnect the plug to the cold start injector. Even if you have an issue with the engine running then dying after a few seconds after doing this, if you don't smell fuel after disconnecting the cold start injector and try to restart it, the cold start time injector time switch may be failing.


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It does sound like an AFM or COR issue considering it dies after a few seconds, but the fuel smell when trying to restart the engine may be a separate issue that needs corrected / isolated first.

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