0
What else can I help you with?
Your 1996 Jeep Grand Cherokee Laredo blows the ignition relay and doesn't start. What could cause the relay to fail?
Check your wires at the starter, and the starter itself. You can take it to most auto stores to have it checked out. You could also have a bad/broken wire under the relay box.
After changing the starter relay the selinoid why wont it start?
check your wiring to selinoid and relay and battery posts also make sure plugs and or wires are good and check the battery
What eles would cause a 96 blazer not to start I changed the starter the starter relay and the neutral safety switch The problem is inertmittent?
Your 1996 Chevrolet Blazer may not start due to a faulty ignition switch. The electronic fuel pump may also be faulty and need to be changed.
How does a Potential Relay Work?
I am going to post an article published in 2006 by John Tomczyk of Ferris State University, Big Rapids, Mich. I cannot improve on his description.The Potential Start RelayFigure 1This month's article will cover theory and operation of potential starting relays. The article that will appear in the Aug. 7 issue will cover potential relay ratings and specifications along with systematic troubleshooting.Potential or voltage starting relays are used with single-phase capacitor-start/capacitor-run motors, which need relatively high starting torque. Their main function is to assist in starting the motor. These starting relays consist of a high-resistance coil and a set of normally closed contacts. The coil is wired between terminals 2 and 5, with the contacts between terminal 1 and 2. Terminals 4 and 6 are used for capacitor and/or condenser fan connections and have no electrical significance to the starting relay itself (Figure 1). Terminals 4 and 6 are sometimes referred to as dummy terminals and are simply used for wire connections.Fig. 2 shows how a potential starting relay is wired to a capacitor-start/capacitor-run compressor motor. Note that the relay coil is wired in parallel (across) the start winding. The normally closed contacts are wired in series with the start winding and the start capacitor.OPERATIONWhen the power is applied through the cycling control, both the run and start windings are energized. The start and run capacitors provide the phase shift for starting torque because of their capacitance adding when wired in parallel. In fact, both capacitors are wired in series with the start winding and in parallel with the run winding. The run capacitor also limits the current that will pass through the start winding when the motor is running, since they are wired in series. The run capacitor also provides running torque when the motor is up and running.The operation of the potential starting relay is based on the increase in back electromotive force (back EMF) or a bucking voltage that is generated across the start winding as the motor increases in speed. The large metal mass of the motor's rotor turning at high speeds with motor windings in close proximity has a voltage generating effect (Figure 3). This generated back EMF opposes line voltage and can be measured across the start winding or across the coil of the potential relay at terminals 2 and 5. The back EMF is usually a higher voltage than the line voltage and can be in the 400-V range. All motors have different magnitudes of back EMF.Figure 2The back EMF voltage generated across the start winding causes a small current to flow in the start winding and in the potential relay coil since they are in the same circuit. When the back EMF has built up to a high enough value, referred to as pick-up voltage, the contacts between terminals 1 and 2 will be picked-up opened. This will take the start capacitor out of the circuit.The pickup voltage usually occurs when the motor has reached about 3/4 speed. The start winding is still in the back EMF circuit keeping the relay's coil energized while the motor is running at full speed.When the cycling control opens, line voltage power is taken away from the motor. The motor's rotor decreases in speed, thus the back EMF generated across the start winding decreases in magnitude. The relay now sees a lowering back EMF and no longer can generate enough magnetism in its iron core to keep contacts 1 and 2 open.Figure 3The contacts thus return to their original normally closed position by spring power as the motor coasts to a stop. With the start capacitor out of the circuit, the motor now becomes a permanent split capacitance (PSC) motor in the running mode only.John Tomczyk is a professor of HVACR at Ferris State University, Big Rapids, Mich. He can be reached by e-mail at tomczykj@tucker-usa.com.Publication date: 07/03/2006
Why want a 2001 ford f150 supercrew with 5.4 v8 start has good battery and cables?
Check the starter and the cable from the starter to the starter relay. Also, the relay itself. Could be any of these.
When i turn the key to my car it won't turn over and i am hearing several clicking noises what is this?
need lot more info. but with what you gave us sounds like start relay or start disable relay depending if you have security or not could also be a weak battery
Will a main relay malfunction cause the car turn off while driving?
Yes, the main relay is also known as the fuel pump relay. When one fails in can create a slue of different problems for the car such as turning the car off while driving.
How do you find out if you have a bad relay fuse on your gsxf katana?
with a test light ensure you are getting power out from the switch, at the same time you should be getting power out of the relay . if your not getting power to the switch but you do from the fuse it can also be in the line.-then determine the cause or keep a spare relay
Your 1998 jimmy will start sometimes and wont other times?
Check voltage and plug on your fuel pump relay. Also check the relay (while the engine is running) for heat. Might be a bad ground???
I have a 88 acura legend and Fuel pump will not start on hot days .?
A common problem on Acura Legends (and other Acuras and Hondas in general) especially in hot weather is the fuel injection ("main") relay. In many cases, this relay is usually the cause of hard starting problems rather than the fuel pump. The fuel pump is misdiagnosed because many people are unaware of the fuel injection (also known as the "main") relay. The main relay is located under the dash, on the driver's side.
Is it possible battery was too weak to start car also no gas in car?
Weak battery and no gas can both cause a no start.Weak battery and no gas can both cause a no start.
I have a 1991 safari stationwagon and the engine fan will not start up what are possible reasons?
Some of the reasons may be a fuse for the fan-relay, or the fan-relay its self. It could also be a coolent temperature sensor.Hope this helps.
