# 1992 Isuzu Rodeo fuel system problems

**URL:** <https://community.cartalk.com/t/1992-isuzu-rodeo-fuel-system-problems/65638>\
**Category:** Maintenance/Repairs\
**Tags:** isuzu, rodeo\
**Created:** [June 22, 2011, 10:11pm UTC](https://community.cartalk.com/t/1992-isuzu-rodeo-fuel-system-problems/65638 "2011-06-22T22:11:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jerandi](https://avatars.discourse-cdn.com/v4/letter/j/bcef8e/32.png) [@jerandi](https://community.cartalk.com/u/jerandi)\
**Post date:** [June 22, 2011, 10:11pm UTC](https://community.cartalk.com/t/1992-isuzu-rodeo-fuel-system-problems/65638/1 "2011-06-22T22:11:45Z")

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My 92 Rodeo is giving me fits. My fuel dummy light came on with a full tank of gas and the car died. I have since changed out the fuel pump, fuel sender, filter and checked the relay. What else could be causing this.

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [June 22, 2011, 11:44pm UTC](https://community.cartalk.com/t/1992-isuzu-rodeo-fuel-system-problems/65638/2 "2011-06-22T23:44:48Z")

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A fuse perhaps?

Bottom line: if the pump has no voltage, you’ll need to go back through the line until you find the lost voltage. It might be a fuse, a relay, an inertial switch (many vehicles shut the fuel pump off in an accident to prevent infernos), or even a simple frayed wire. You’ll probably discover that you changed all these parts for nothing.

Start with an owner’s manual and a DVM with pin probes and find the missing voltage.

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**Author:** ![George\_San\_Jose](https://avatars.discourse-cdn.com/v4/letter/g/5f9b8f/32.png) [@George\_San\_Jose](https://community.cartalk.com/u/George_San_Jose)\
**Post date:** [June 23, 2011, 12:32am UTC](https://community.cartalk.com/t/1992-isuzu-rodeo-fuel-system-problems/65638/3 "2011-06-23T00:32:41Z")

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On 92 toyotas the low fuel light is operated by a switch on the fuel sender unit. It switches the light on when the tank is less than 1/16 full. It’s hard to see how something wrong with this switch in the sender unit would cause the car to die, or be related to a failed fuel pump.

I’m guessing you are chasing wild fowl. I think the problem is more likely in the electrical system somewhere. A shorted wire probably, that coincidentally turns on the low fuel light, but also shorts out something important needed to keep the engine running. Take a look at the schematic and see if the wire running between the sender and the dashboard for low fuel runs near something important.