Question about Pontiac Grand Prix

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Can a short in a neutral safety switch cause the fuse for all of the gauges to blow? Fuse 39 (10A) or the I/P Electronics Ignition Feed continues to blow. It has blown after I shift gears and recently while turning right into a parking lot. A mechanic friend of mine said it could be the neutral safety switch. If it is, where is it located on my car?

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Yes---it works with the bcm (body control module ) and is fused along with the instrument cluster

Posted on Jun 22, 2009

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I have a 2004 chevy surban that keeps blowing the ignition fuse what can cause this


You have a direct short to ground on that power feed circuit . You need to find a power distribution diagram to see what all gets is power from that fuse . Isolate the circuits till the fuse doesn't blow any more , then trace out that circuit that blows the fuse .

Which Ignition fuse ? Which fuse box is it in ? under hood , passenger compartment ?
IGN A
40A
Ignition Switch RUN, START, RUN/START/ACCY
IGN B
40A
Ignition Switch RUN/ACC, RUN/START
Could be ignition switch problem , Chevy has had problems with them .

Jul 06, 2016 | Cars & Trucks

1 Answer

2000 chev truck auto trans no start


current start from battery to ignition switch to neutral safety switch
with test light check at ignition switch for current when start to yellow wire and so on.
hope it helps

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Apr 10, 2014 | 2000 Chevrolet Silverado 2500

1 Answer

92 Toyota pickup, was blowing efi fuse now its not but when I turn the key it doesn't do anything


A bad short blowing the fuse. Could be in the wiring for that circuit, or bad part, component (like the computer, sometimes a shorted injector).
Check if the fuse still has power to it. Use a test light to check for power at the fuse. If no power, probably blew a fusible link or maxi fuse that is the feed for that fuse block.
Turn key to on-do the warning lights and dash gauges come on? If not, check that power is still getting to the ignition switch. I think there are fuses (AM1 &2?) for the ignition switch, not fusible links.
Shorts in the wiring can be difficult to find, may be buried deep in a wiring harness, one needs to check continuity of wiring to locate wiring shorts, looking for high resistance in a section of wire-you may need a shop to diagnose. If you have a wiring diagram available, could start checking wiring and parts in that circuit.
If you want to get creative, here is how an auto electrician can hunt for shorts: use some jumper wires and hook up a circuit breaker of same rating as the efi fuse in that fuse slot. Now when testing you will not be constantly blowing the fuse-circuit breaker will reset every time. Unhook parts in the circuit one at a time, turn key on so power is going through the circuit, whatever part is unplugged that breaker does not trip, that is the problem-the wiring to it or the part itself. Also do a wiggle test of the wiring: key on, move different parts of the wiring and harness, if you cause the short tripping the breaker (or blowing the fuse if you just keep adding a new fuse each time) then you have found the short.
Here's a heads up: anytime you want to pull the connectors off of the computer, make sure key is off, remove negative battery terminal, pull connectors off the computer, reattach the negative battery terminal. With connectors off examine connector pins for any corrosion or bent pins.
Good luck, get power back to the ignition switch if it is lost, then start looking for what is blowing the efi fuse.

Sep 01, 2013 | 1990 Toyota 4Runner

1 Answer

Diagram of a 2000 chevy express wiring of a starter


( one question i have is every time the ignition fuse blows do i need to replace the starter relay? ) NO ! You have a dead short to ground on one of the circuits that fuse feeds. Do you know how to find a short circuit ? Video's on youtube show how. The fuse that blows ,is it IGN - A 40 amp. located in the under hood fuse/ relay center ? That fuse feeds B+ voltage to the ignition switch ,which powers up other thing's ,fuse's etc.. Not just the starter relay ! I see five other fuse's that get power from that fuse when ignition switch is in the start or run position . In the I/P fuse panel the gauges fuse #4 10amp , air bag fuse #10 10amp , turn b/u fuse #16 20amp. , Plus trans fuse #20 10 amp ! Pull out these fuse an try to start the van. if the ignition fuse doesn't blow the problem is in one of these other fuse circuits. There is one more fuse that get's B+ power from the ignition switch and ign A fuse ,crank fuse fuse #8 10amp. this powers the control side of the starter relay .
You can find a free wiring diagram here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine . Under system click engine , under subsystem click starting. Click the search button then the blue link.
If you pull those fuse's i mention and it still blows the fuse look for a shorted ignition switch or wiring from ignition to the starter relay , not the relay itself. Park neutral safety switch . Isolate the circuit , pull the relay out of it's socket ,pull the crank fuse #8 in the I/P fuse box. with a ohm meter check to see if that part of the circuit is shorted to ground. Do you know how to do that ? Do you have a volt ohm meter ? You can buy one cheap at parts store .

Sep 14, 2017 | 2000 Chevrolet Express Cargo

1 Answer

1999 Camry gauge fuse keeps blowing. Have unplugged oil, fuel, temp sending units. Also unplugged neutral safety switch, speed sensor and light failure relay.


First thing I would do is plug all those others back up and unplug the gas gauge. You probably have a short in the gauge itself that is blowing the fuse. Replacing it may be your only option and I am sure they put it where it will be easy to get to. Sorry no easy answers, except put 5 Gallons and a funnel in the trunk and guess at it.
Gillight

Aug 27, 2012 | Toyota Cars & Trucks

2 Answers

Turn ignition on and ignition feed fuse keeps blowing


A BAD TRANSMISSION NEUTRAL SAFETY SWITCH OR FAULTY PCM WILL BLOW THE IGNITION FUSE.

Sep 17, 2011 | Chevrolet Impala Cars & Trucks

1 Answer

The alternator fuse link keeps on blowing out on my 97 mitsubishi 3000 gt.and killing the alternator as well


CHECK ALTERNATOR POWER FEED WIRE AND VOLTAGE REGULATOR WIRES FOR EXPOSED WIRES SHORTING TO GROUND.CHECK BATTERY POSITIVE CABLE FROM ALTERNATOR TO STARTER. LOOK FOR SIGNS BURNT WIRES.YOU HAVE POSITIVE BATTERY CABLE SHORTING TO GROUND.OR STARTER SOLENOID OR STARTER SHORTING OUT.TRANSMISSION NEUTRAL SWITCH OR IGNITION SWITCH WIRES SHORTING OUT IGNITION.

Jan 06, 2011 | 1997 Mitsubishi 3000GT

4 Answers

99 camry gauge fuse blowing


maybe its the board holding the fuses faulty

Feb 25, 2010 | 1999 Toyota Camry Solara

1 Answer

Im have a 40 watt fuse that blows when i start my truck occasiona


It could be either the ignition switch,clutch safety switch(if applicacle)or the starter solenoid,I'm including the circuit diagram for you,one of the 2 or three if it's manual trans has short,if the fuse is blowing as soon as you turn the key on(not engaging the starter)it will be in the switch itself or the clutch safety switch.If it happens when you go to engage the starter it's most likely the solenoid.
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May 12, 2009 | 1995 GMC Sierra C1500

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