Question about 1994 Isuzu Rodeo

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Overheating where is the relay switch - 1994 Isuzu Rodeo

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We bought a new battery for the key remote and it still wont unlock the doors. Also the alarm is messed up because even tho the lights come on, the car wont start. It did this once before and it was some combonation of how we locked and unlocked the doors? HELP!!!!

Posted on Mar 14, 2011

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Hello, patrick4012 and thank you for asking your question on Fixya!

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your
1994 Isuzu Rodeo, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people in your exact situation.
How to diagnose an overheating
1994 Isuzu Rodeo
Here is what I found on your relay switch

Get more tips and tricks from a professional about your vehicle from: twitter.com/acoates23234
Thanks for the vote, and good luck!

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Posted on Jan 13, 2011

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Posted on Jan 02, 2017

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It overheats when in traffic ior when it is idling


I have fixed my own 2002 Jeep Cherokee twice for the overheating issue. Overheating can be caused by a number of different problems, but one of the most notorious problems for the Jeep is the 'radiator fan relay switch'. When the temperature thermostat goes over 210, it tells the relay switch to turn on the radiator fan to cool down the engine. If that relay switch isn't working, the fan never turns on and thus your engine overheats. Here's a simple test to check if this is your overheating problem:
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You can purchase a 'radiator fan relay switch' from most Jeep dealerships if they have a service dept. It should be around $75.
(I saved over $700 by not taking my Jeep to an auto shop to fix this) To change out the relay switch, you need to take off the passenger side front headlight. There's a black plastic guard behind the headlight and the relay switch is located under/behind that guard. If your Jeep ever experienced this problem before, you may see a cut-out where someone replaced this part before. If there's no cut-out, you can check out this link to see a picture of where to cut.
http://rigs.corequipment.com/cebby_WJsite/cooling.htm#relay

Once you switch out the part, you should be golden.

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Is the fan coming on? If not, possible lower radiator fan switch/sensor? No leaks... So overflow tanks level stays stable? How do you know it is overheating? Elevated temp guage? Engine smells overheated? Both? We need more info.

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The fan relays above are numbered 37,39 and 40

Relay 37 is RH fan
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