I have a 1986 Cavalcade that runs great then without warning stalls out. I think the fuel pump relay is bad. Does anyone know where this relay is located on this bike?? Thanks

It appears you may have a bad ignition coil that cuts out after it gets hot. Not uncommon.

Sounds like a faulty fuel pressure regulator, faulty fuel pump relay, or a bad check valve on the pump it's self, I would start with the fuel pump relay, it is located inside the right rear fender area inside the trunk

GM Fuel Pump Relay Testing Do you know how to test electrical circuits .

check fuses inside truck . If any dought change it cause sometimes they are hard to tell. I have a 1986 nissan hardbody 4x4 myself.Buy yourself a haines manuel cause the fuel system is pretty weird . good luck i stop by and check out the nissan questions everyday,almost.

There is no "Fuel Pump Relay" as such, there are a set of contacts within the Fuel Pump that do the job you ask. emove the fuel pump, access is in front of the rear wheel mudguard (removed). With it out you cav remove the top cover secured with the only phillips head screw on the unit and "Clean" the contacts with very fine emery paper or a points file. Test its operation before refitting to confirm it works, if so, refit it. Remember that this can be operated by pressing ONLY the starter button, without pulling the clutch lever in, if the starter operates then the clutch switch has been bypassed and the cruise control will not work.

Join the Worldwide Yahoo email group for more help via www.suzukicavalcade.com there may be someone nearby to assist, there are over 1400 members.

autozone.com

toyota's have a big washer in the starter that gets all corroded and refuses to make contact,...great part is that you can turn it around and use the other side which will be in perfect shape!! then she'll start good for another 150,000 miles,....i don't know about the stalling bit,...try maybe fuel filter for that,.....these cars don't usually do anything bad, or break,....so try the simple stuff first,..good luck, and to Ashley's first set of wheels. cracklin joe,....

Does it start right back up after it stalls? make sure all conections are tight at fuel pump, sounds like it could be loosing ground at pump, or hot lead is loosing its connection at pump.Also fuel pump relay could be getting hot and quits working.

You need to verify that the pump is actually working, and delivering fuel to the engine. Since you replaced the pump, you have access to the pump wiring. Pump power is usually controlled by the ECU and a relay, which is usually somewhere in the dash. When you turn on the IGN, you may hear a relay clicking. A reasonable test is to measure the voltage at the pump. If no +12v, try running a temporary wire to activate the pump, ans see if the engine starts. I suspect that the pump relay has failed, or there's a wiring failure. Not uncommon on a 30 year old car.