Where is the fuel pump relay/inertia switch?
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Where is the fuel pump relay/inertia switch?
Hey everybody, I hope that all is well. Just wondering if you could help me with something before I drive to Minnesota from Toronto.....I am having a fuel flow problem in my 1998 MAZDA B2500, and would like to test the fuel delivery system. Please let me know (Haynes is useless as usual) where the fuel pump relay, and the inertia switch are. Also, a simple system test explanation would probably help me tonnes. It seems like when I start the truck cold, it bucks for about 30seconds, then finally breaks 3000 rpm and is able to accelarate. Also, when on the highway I have intermittent loss of power. Any suggestions would be GREATLY appreciated. THANKS!!!
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Don't forget to change the fuel filter also if it hasn't been done in the last 15,000 miles or so. I just changed mine after 75,000 and oh what a difference it makes. At least you would have better gas flow!
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Where did you find the inertia switch ? Is this the same as the emergency fuel shutoff in case of an accident ? Mine is supposed to be at the top of the carpet on the right of the hump according to my owner's manual that was still in the glovebox but I can't locate it there or at the kick panel. Is there a pic somewhere ?
Rich
Rich
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Heh, I've been fighting with this kind of problem for months with my '87 Ranger. If someone has bypassed the wire that goes from the fuel relay to the inertia switch it is probably because the plug that goes into the switch is fried, as mine is. If what I described is the case on your truck try unplugging the plug from the inertia switch and see it the truck runs any better, it helped me for a while. One thing I learned is that you must leave the wire running from the relay to the end of the inertia switch plug intact. I tried splicing a line directly from the fuel relay to the line that runs from the inertia plug to the fuel pumps. The pumps had no power. When I put the line I had cut (the one from the relay to the plug) back together the pumps worked again, even with the plug unplugged from the inertia switch. Just FYI, hope that wasn't too confusing...
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