This happens due to someone starting a car with the IAT intake air temperature sensor plug being plugged into the purge valve located at the back of the intake manifold. Typically the purge valve would have also been incorrectly plugged into the IAT sensor possibly melting the sensor... This is taken a step further with a puff of smoke inside the vehicle followed by a burning smell.
We also offer a mail-in install/repair service to replace this part here
Honda OBD1 Q31 Transistor replacement
- Brand: BoostedNW
- Product Code: honda-obd1-q31-transistor
- Availability: Hurry! Only 4 left in stock!
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$9.99 USD
OFF ROAD USE NOTICE
Items sold through boostednw.com including tuning products may be designed for off-road/race use only, and are not applicable for vehicles in states that require pollution controlled vehicles. California (CARB) & other states prohibit the sale or use of some aftermarket parts, including those that tamper with, modify or defeat emissions systems in any 1966 and newer vehicles. BoostedNW LLC prohibits the use of these products on emission controlled vehicles. These parts are sold for OFF ROAD, RACE-ONLY, ground-vehicle use only in a controlled environment.
BoostedNW LLC does not implicitly or explicitly confirm the legality of using any products it sells on public roads. Customers are solely responsible for ensuring all products purchased are used in a legal manner.