Question about 1988 Ford F 250

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Clutch/starter interlock switch no longer engages. how much of the dash do I need to pull to access? Procedure?

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  • otcoyoteoo Jun 30, 2009

    EW-
    This switch is located somewhere deep in the bowels of the dash and engages when the clutch is fully depressed (When it's working that is). Switch still works however clutch peddle bearing wear is such that it's having BIG problems engaging. Access to area non existant as is. Should I come in from the bottom, top, or full frontal dash assault?

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The solenoid that pulls the interlock pin back is located on the top of the sterering column, drop the column down to access it, are u sure the brake lights work? that is what energizes the solenoid.

Posted on Jun 30, 2009

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I have a 92 sentra lights come on but when i turn key nothing happens. Starter good ,relay good, head lights don't dim when you turn key . Car won't turn over at all


If by lights, you mean the dash lights come on, then ignition switch must be getting power. If dash is not working with key on, check the 30 amp fuse link which powers the ignition switch.
If switch is good and starter is good, the start wire from switch goes to, if automatic, to inhibitor relay (the park/neutral function) and then to starter. There is also an inhibitor switch on the shifter or on the transaxle that turns on the inhibitor relay when key is on and shifter in park or neutral. The inhibitor switch is powered by a 10 amp fuse D.
If you have a manual transmission, the start wire from ignition switch goes to the clutch interlock relay and then to the starter. This relay is turned on by the clutch interlock switch on the clutch pedal.
You can check for power on either relay, the inhibitor relay or the clutch interlock relay, with a test light. Pull the relay out, have the key held in start position. Now both relays would have power showing on two terminals where the relay plugs in. If inhibitor relay only has power on one terminal or no power at all, either ignition switch is not sending power or fuse D is out or the inhibitor switch is not working right. If clutch interlock switch does not have power on two terminals either the ignition switch is not sending power or the clutch interlock switch is bad.
If the relay checks are good, check for power on the small wire to starter with key held in start. If you have power there, the starter solenoid must be out.

May 08, 2013 | Cars & Trucks

2 Answers

How can depressing the clutch engage the starter ?


It sounds like current is feeding into the start wire off the switch. Trace the wire from the clutch switch to the ignition switch connector. Does the wire look good? Examine closely the connector and see if you see a burnt terminal, or some broken plastic in the connector, some way for the start wire to pick up current. If you see nothing wrong, IDK, probably will need a shop to chase the wiring down and find it. I don't know if a bad starter relay (stuck on) could do that, likely not if it only happens when you depress clutch and have clutch switch on.
Good luck.

Dec 31, 2012 | 1991 Chevrolet C1500

1 Answer

Clutch started switch


The clutch starter cutout switch you speak of is located above the clutch pedal, pull the panel off under the dash to access it. Here is a picture of the clutch switch.


2_24_2012_8_19_41_pm.jpg

Feb 24, 2012 | 1996 Ford F350 Crew Cab

1 Answer

I was driving on the road when the starter engaged and burn out, I replaced the starter motor, starter relay, and ignition switch. turned the key and starter stays on. had to disconnect battery to stop it....


Hello, There are small wires that attach to the Starter Relay. These are the wires Mechanics call "tickler" wires. There should not be power going through the tickler wire unless the Ignition switch is turned to the START position.

Disconnect the small wire off of the Starter Relay. Leave it off and put your battery cable on the Battery. The Starter should not crank. The Ignition should be OFF.

Now we need to find out where the tickler wire is getting power from. Put a Multimeter or test light on the Tickler wire for POS and ground the other wire on the tester to a NEG ground. I suspect your problem is in the Interlock switch. The Interlock switch would be on the Clutch pedal lever under the dash for a standard shift.

If you had an Automatic transmission, the Interlock would be in the shift linkage or Brake pedal lever. Without changing from an Auto to a Standard trans people have trouble hitting the under dash Interlock switch with their shoes getting in and out of their cars. Even while driving you can hit the under-dash switches with your shoes.

So check under the dash for a broken or dislocated switch on the Clutch or Brake pedal levers. Then move the switches until the Test equipment shows the power is not going to the Tickler
wire . Once you do this you have to make the START position work on the Ignition switch. Leave the tickler hooked up to the test equipment until you get the wiring right. You may have to adjust the Ignition shift-rod in the steering column so that START means the correct thing only in the start position.

I hope my solution is very helpful in giving you ideas about fixing your car.

Mar 17, 2011 | 1990 Ford Mustang

2 Answers

Had starter tested and it is good. had battery tested and it is good also. checked all fuses and all relays all good. engine will not crank. i think the ignition switch is loose could this be the problem ?...


There is a switch that only allows the starter to work if the gearshift is in neutral or park.
Try wiggling the gearshift while you try to start the engine. If that causes the starter to engage briefly, you'll need to either re-align the switch or replace it.

Feb 19, 2011 | 2006 Jeep Liberty

1 Answer

Engin will not turn over when i put car in first gear the engin will turn but wont start please could u help me thank u


Your Starter Interlock switch is out of position or broken. Look under the dash at the Brake and Clutch pedal levers. You should see some switches. These are the switches that make your car start and work the Brake lights.

They often get hit by feet as you get in and out of the car. You have 1 switch that works with the Gearshift and you should only be able to start in Neutral. The fact that the Starter will turn when in 1st gear is a mistake. It is not starting because the spark is not suppose to be available in 1st gear.

You need to realign the switch or replace it. The clutch pedal may also have a safety switch on it. You should have to depress the clutch or have you foot on the Brake for the Starter to engage when the Gearshift is in Neutral. The car is designed so everything must be in alignment before the car will start and the Driver is doing the controls properly.

Feb 07, 2011 | 1995 Ford Escort

1 Answer

I got a 89 bronco II and it wont start. Its got a new battery. I jumped out the starter relay and the starter engaged. So thats good. Also the relay clicks when you turn the key. Also checked the...


Im not sure what you mean by I jumped out the starter relay and the starter engaged.
so i am going to assume that you jumped from the battery side to the starter side on the relay and that engaged the starter... which is fine but you say the relay clicks when u turn the key. Pull off the clip on wire from the relay and push it against the battery side connection on the relay (u may need a small screwdriver to assist the connection) the relay should cause the starter to engage. If it just clicks (my bet) then you need to replace the relay (its really called a solenoid )

Feb 14, 2010 | 1989 Ford Bronco II

1 Answer

1998 Volkswagen Jetta TDI Vehicle will not start/Clutch?


You have an interlock switch on the top of the clutch pedal. Is it out of adjustment? This will prevent the starter from cranking.

Aug 17, 2009 | 1998 Volkswagen Jetta

1 Answer

When clutch is pressed sometimes engine will not start other times it will


I assume you mean the starter will not engage. Check the safety switch on the clutch pedal(under the dash at firewall). This switch must make contact to engage the starter. If you have cruise control, this switch also disengages the cruise when you depress the clutch. Two of the wires need to be connected for starter to work, the other two need to be disconnected for the cruise to work. I hope this helps.

Aug 02, 2008 | 2000 Chevrolet S-10

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