Having problems with your 1993 Pontiac Sunbird ?

Heat gauge when I start the car engine will heat up, gauge will hit half way mark then drop. after that the gauge will rise and fall about every 3-5 mins from the 1/4 mark and down when you are going about 80+kms, when in park and idle... heat gauge rise and fall normal, takes about 1/2 hour or so in cool weather (I.E. +5) things I have replaced include...head, head gasket, thermistat, radiator, rad. fluid, rebuilt some of the part ( can not buy new anymore) the car dose not over heat, the gauge

Posted / edited by AnonymousUser on : 25-03-2019

Answers :

Before getting too upset about this, try changing the temperature sender. Can't tell you where it is but it is usually on or near the thermostat housing but some engines have it on the intake manifold or rear of cyl head.
Repair Help & Product Troubleshooting for 1993 Pontiac Sunbird

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