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1990 GMC Delta van w/ 5.7 litre engine, the temperature light came on, stays on. This happened after I replaced the alternator, what do you think?

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Hi,

The problem could be as simple as an air bubble in the system, or a failed coolant temp sensor. Have the system pressure checked as soon as possible. You may even just need a new radiator cap. But you may have larger problems and you'd do best not to drive it with the chance of overheating it.

Please check the bellow link to have a detailed knowledge when temperature light comes on in car:-


http://autos.yahoo.com/maintain/repairqa/warning_lights/ques013_0.html


Please accept the solution if it's helpful. Do get back to us for any further query.

Thanks for contacting fixya.com

Posted on Sep 30, 2010

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