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Old 07-23-2011, 12:23 AM   #1
hdoggie24
 
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Default Truck wont' start.....Fuel pump inertia switch?????

I've heard that some cars have these. I have a 97 hardbody that having trouble starting. I has been sitting awhile although but was told that sometimes inertia switch can get triggered and shut off the fuel pump. Its either this or my fuel pump is bad cause my motor turns over but doesn't start. When I spray the canned gas stuff in it does start but slowly dies out. So that how I know its a fuel problem and not a electrical problem. If anybody knows that would be great. Or does anybody have any opinions on ideas to get it started. Even if fuel pump is bad is there a trick to start it up to at least move my truck so I can get it somewhere else. Thanks.
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Old 07-23-2011, 12:32 AM   #2
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I've heard that some cars have these. I have a 97 hardbody that having trouble starting. I has been sitting awhile although but was told that sometimes inertia switch can get triggered and shut off the fuel pump. Its either this or my fuel pump is bad cause my motor turns over but doesn't start. When I spray the canned gas stuff in it does start but slowly dies out. So that how I know its a fuel problem and not a electrical problem. If anybody knows that would be great. Or does anybody have any opinions on ideas to get it started. Even if fuel pump is bad is there a trick to start it up to at least move my truck so I can get it somewhere else. Thanks.
Heres what you need to try. Make sure it is very quiet, maybe late at night. Turn the key, if you dont here a low hum, then your fuel pump maybe bad. Check your fuses and the relay under the hood on the RH side first though.
If all thats good, check the connection where the harness ties into the frame, RH side near the tank. If all checks out, then pump is bad.
As far as moving it, your gonna have to push by hand or tow strap it if you want it moved anymore than your driveway.

I have never heard of a fuel cut off switch on any of the HB trucks.
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Old 07-23-2011, 01:34 AM   #3
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Thanks......Thats what I though about the switch but then I see this listing
http://www.rockauto.com/catalog/x,ca...l,partGroup,78

Hmmmmm. I wonder now..
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Old 07-23-2011, 01:51 AM   #4
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Thanks......Thats what I though about the switch but then I see this listing
http://www.rockauto.com/catalog/x,ca...l,partGroup,78

Hmmmmm. I wonder now..
That is an aftermarket one that can be adapted to work on our trucks. I found this out not to long ago when trying to figure my truck with the same issues you are having.
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Old 07-23-2011, 07:28 AM   #5
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Oh I get it. Thanks for the info. Looks like I might need a new fuel pump. Dang it.
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Old 09-15-2011, 04:21 AM   #6
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I have a fuel cell and have similar issues.
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Old 09-17-2011, 06:27 PM   #7
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Just an update......turned out to be the fuel pump causing my problem. Replaced and starts right up. Having another issue when its idling at times, its acting like it maybe wants to die at times. Kinda jumps if you say. I drove it around the block and when I stopped and it idled it died. Any ideas.....
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Old 09-17-2011, 10:55 PM   #8
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Just an update......turned out to be the fuel pump causing my problem. Replaced and starts right up. Having another issue when its idling at times, its acting like it maybe wants to die at times. Kinda jumps if you say. I drove it around the block and when I stopped and it idled it died. Any ideas.....
Fuel filter may need replacing. Or got a clogged injector.
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