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Old 12-11-2014, 10:18 PM
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Default 1994 Isuzu Trooper LS

Hey guys, I can upload some pictures of it later but I need some help with something. I have a 94 Trooper with the 3.2L DOHC in it and it won't start today. It's happened once before when I was driving my fiance around doing christmas shopping and I would try to start it and the starter would click once, I'd have all my lights and radio and what not but I would get no attempt to start. I'm kind of stuck because I thought it was the starter but i tested it and it's fine? Does anyone have any ideas about what it could possibly be?
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Old 12-12-2014, 12:09 AM
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Does it have some sort of anti theft device?

That could cause the issue.
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Old 12-12-2014, 12:22 AM
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Default 1994 Isuzu Trooper LS

Check battery connections. Starter connections. Neutral safety switch. How did you test the starter? Could be a failing solenoid.
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Old 12-12-2014, 01:20 AM
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Not to my knowledge. Battery is good, what's the neutral safety switch?
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Old 12-12-2014, 04:53 AM
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Quote:
Originally Posted by Robindehood View Post
Not to my knowledge. Battery is good, what's the neutral safety switch?
Neutral safety switches look something like this.



They're usually found on the top of the transmission and are usually coupled with the gear selector, and a wire will move as you shift around. When these fails, the car will not detect the proper gear, thus not allowing it to start. So being in park may cause the ECU think that the car is in reverse or not be detected at all.

Also, anti theft devices aren't just car alarms. All car manufacturers had some sort of anti theft mechanism. GM for example was very famous for the keys with the pellets. The Camaro has this set up. The keys are called "VATS" keys. They're known to fail a lot. Nowadays GM uses "Passkey" which doesn't use any pellets on the key but the key is programmed or the ignition cylinder is programmed. Usually if there's an issue with the key or cylinder, the car won't start. The 97-05 Chevy Malibu and 99-05 Pontiac Grand Am and Olds Alero were known for this. There would be a security light that would light up on the dashboard and prevent the car from starting. It disabled the fuel pump but it would allow the car to crank. This effectively put the car in "anti theft mode".

The reason I made a comment about that is because some anti theft measures (GM's VATS for example) disabled the starter and the fuel pump. This made the car make a click noise but wouldn't do much else. Of course, this ended up leaving owners stranded than actually preventing theft.

If your starter checks out, your battery has enough CCA (low CCA can make a car not start but keep the interior lights on), and your alt isn't weak, the next logical step is electrical and fuel. If you can verify fuel is being delivered, then it's electrical. Part of the electrical is the anti theft system and it can make it seem as if you're having a mechanical failure.
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Old 12-12-2014, 10:57 AM
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if the starter isn't turning over there are a number of possibilities. a few have already been mentioned

-bad connections
-bad starter solenoid
-worn brushes inside starter
-bad ignition switch
-neutral switch issues

Thats the order i would start looking as well. there could be a common problem that has been mentioned on forums specific to this vehicle that I'd look for as well.
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Old 12-12-2014, 11:44 AM
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My 3rd Gen camaro used to do that alot. If all other suggestions fail try beating on the starter with a jack handle or larger wrench. That always got me started.
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Old 12-12-2014, 11:57 AM
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the only issue is it's really difficult to get to the starter lol. It's like, wedged under the exhaust manifold, behind a fuel line, and over top of the k-member haha. They only give you an inch or two of extra room to try and turn the starter out of the spot. I'm really hoping that it ends up being the n.s.s because it's an easier fix and I can just sell the thing. Who knew that a v6 could be so awful on gas....
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Old 12-12-2014, 12:08 PM
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i had a 94 s10 blazer with a 4.3... best i could squeeze out of it was 17 mpg
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Old 12-12-2014, 11:24 PM
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In the 2 years I've owned the trooper the best I've seen is 14mpg highway... just plain bad. It struggles on the highway too. But i've never run into something it couldn't conquer haha
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