Question about 1988 Ford F 350

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Key won't turn engine over, but will turn over by jumping the solenoid switch, but still won't fire. Can you help?

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Sounds like a bad ignition switch

Posted on Oct 14, 2010

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Battery hot wire hot at solenoid but no fire at start switch.Can jump solenoid and it will turn over. What do I look for?


The start switch ? Do you mean the starter relay your jumping the solenoid on the starter and it starts right but when your in the vehicle and you turn the key you get nothing right if this is correct the starter relay is no good when you turn your key in the steering column lock that moves the ignition switch on the steering column sending voltage to the relay then the relay sends it to the solenoid which then powers up the stater motor then it cranks the engine//// so the relay is bad

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I have a 2005 Toyota corolla and yesterday we went out and the car was parked and turned off for an hour. When we went to start it everything but the engine would start. The lights the radio the heate


You are saying that the starter motor is not working, that the engine is not cranking over, even with a boost?

If so, then either there is a problem in the starting circuit between the ignition switch and the starter, or the starter is bad. There is a way to check the starter on the vehicle: the starter will have 2 electrical connections. One is the positive battery cable, and the other is a small wire connection to the starter solenoid, mounted on the starter. The key should be off, the brake set, and the transmission in park or neutral. Use a small jumper wire or a small screwdriver, and jump the battery cable connection to the solenoid connector. Take off the solenoid electrical connector if you need room to do this. With key off, the engine won't fire and run, but if the starter is good, then jumping those two connections will make the starter engage and spin the engine over. (Of course, if key is in ON, the engine should start and run.) But you are just checking starter operation, so keep the key off. If starter is good it will crank the engine over. If jumping the two connections causes nothing, then it is pretty certain the starter motor or the solenoid is bad, and you need to replace it. (Take off the negative battery cable from the battery first to remove the starter from the vehicle.)

If jumping the starter caused it to operate, the starter and solenoid are good, and there is, again, a problem in the start circuit from the ignition switch to the starter solenoid. It could be simple like an electrical connection (like the one right there on the solenoid), or a component in the circuit between the ignition switch and the starter solenoid, like the neutral safety switch for example. You will need a wiring diagram and a multi-meter to diagnose further. Good luck, and hope you find the problem. Are you sure your battery is still charged up good?

Jan 12, 2015 | 2005 Toyota Corolla

1 Answer

96 Monte carlo z34 won't crank over unless I jump


Sounds like a problem with the key switch, probably the security system. You may only have power to the fuel pump when the engine is cranking.
Is the security light on or flashing ?

Jun 29, 2013 | Cars & Trucks

2 Answers

1994 cadillac deville no crank


The PATS security system would prevent the engine from cranking if the system does not "see" the right chip in your key. If the system is working correctly, the light should go off after you turn the key switch on.
You should have power on the small starter wire when the key switch is in the start position.

May 02, 2013 | Cars & Trucks

1 Answer

1993 F350 turbo idi wont always start


There is a safety switch on top of the brake pedal lever or clutch lever which is suppose to prevent lurching on start-ups. It is suppose to insure that the Brake pedal is pushed OR the clutch is down before the engine will crank.

The Ignition switch is interrupted by the above cutout switches. But when Ignition is turned on, the Glow plug timer should click and cycle if Power Relay is giving it juice. So if you do not hear that type of clicking, the glow plugs will stay cold.

I would check to see if power is going to the Power Relay above the glow plug timer, and if it is getting power, does the Power Relay send it to the Timer? The starting circuit is more involved in a Diesel because the fuel must be atomized by heating it for initial starts. But you must be getting this process if jumping the solenoid results in the engine starting.

Therefore the big test is whether the small wire to the starter solenoid is dead when a foot is pressing the Brake or clutch pedal when the Ignition key is in the STARTER position.

So either your Ignition switch is bad at the STARTER terminal position or the signal is interrupted by the anti-lurch Interlock switch. It is quite common for problems with this switch being hit and broken or displaced by the Drivers' feet.

There was also no indication of whether you jumped the solenoid on a warm engine which could atomize the fuel by compression or a very cold engine which needed the glow plugs to work.

Please comment on my info and report your success.

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2005 Altima won't start, hear clicking sound coming from fuse box,key stuck in ingintion,won;t turn over,tried to jump start.


the clicking that you hear is coming from the starter relay. sounds like your ignition starter switch or ignition lock cylinder is bad.

May 30, 2012 | 2005 Nissan Altima

2 Answers

Daughters Car Won't Start


did u disconnect he ground on the battery,berfore changing th swicth, ther are two fuses / relay . one under dash and one under hood. if ther good ther is a back up fuse to comp. 7.5 read cover to be sure . take out for 10 min. replace and see if it helpes if not u may hav melted wires somewere. solenoid to to starter. good luk claymister

Dec 01, 2011 | 1990 Ford Thunderbird

1 Answer

Won;t crank


Hi, if the car engine fails to crank, there is a fault in one of the components in the battery/ignition/starter circuit. Low battery (Check battery voltage, recharge if low, or jump start with another vehicle or battery charger). Bad starter relay/solenoid (Check for voltage at relay, if relay has voltage but there is no "click" when key is turned to start, replace relay). Bad ignition switch (Check to see if voltage reaches starter relay/solenoid when turn to start. If not, check for open P/N switch and brake or clutch pedal switch. Replace ignition switch if defective).

May 26, 2011 | 1994 Dodge Stealth

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