1999 Saturn Ion



July, 28, 2008 AT 11:43 AM

Engine Performance problem
1999 Saturn Ion

I recently purchased a used 1999 Saturn Ion and every now and then it overheats. The tempgauge is not showing hot but it will smoke and over flow in the coolant reserve. I had it in to a mechanic and he could not find anything wrong. We keep the reserve filled to the line. Any suggestions?


1 Answer



July, 28, 2008 AT 11:59 AM

Try replacing the thermostat and bleeding the cooling system not it do the following below: Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat, Pressure test the Rad. Cap, Clogged radiator, Fan clutch, Radiator electrical fan, collaspe hoses, water pump

Please login or register to post a reply.

Catalytic Converter Replacement Volkswagen
Find Out How to Test Your Catalytic Converter
Fuel Filter Replacment BMW 525i