4.6 L engine overheats while driven

1 ANSWERS

1. amomipais82
   

   Hi There,
   The steps to check the cooling fans eithor with a scan tool or with the onboard diagnostics would be too lengthly to print out of for me to type up. Basically what happens is both fans should turn on slow speed at around 106 degrees C and high speed at 110 degrees C. If you only have low speed then there could be a problem with the hi speed relay or wireing.
   
         If you need more info that that I would suggest you contact the other Caddy expert and he might be able to send the info you need. Otherwise a GM shop manual or a subscription to AllData.com will give you the info that you would need to diagnose this yourself. Ebay, Ebay Motors, manuals is a good sourse of GM factory manuals. Make sure to get both manuals for your car because engine and trans is in 1 manual and everything else is in the other.

   Report (0) (0)  |   12 years, 9 month(s) ago