what is it

jecstl · Posted: Mon Aug 13, 2012 7:58 am Post subject: what is it

in my very slow process (budget woes) of disassemble my 75 bus. i ran across a item it a black box up front it ties into the speedometer cable and has three wires coming out. beings i does not have cruise is it for the removed fuel injection

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cory464 · Posted: Mon Aug 13, 2012 8:01 am Post subject:

service interval indicator i think it is called. supposed to tell you it is time to replace something.

jecstl · Posted: Mon Aug 13, 2012 8:12 am Post subject: thanks

cool thanks for the info

SGKent · Posted: Mon Aug 13, 2012 8:21 am Post subject:

it is called the EGR counter. It counts mileage on one or more of the EGR, CAT and O2 systems and gives you a warning light when it is time to take it in for a check up. Here is an article on it http://www.ratwell.com/technical/EGRBox.html


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