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ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: Hynzer on August 07, 2007, 08:44:31 AM

Title: ECU reads that Engine is running cold ????
Post by: Hynzer on August 07, 2007, 08:44:31 AM

Hey Guys,

A garage scanned my ECU and it read that the engine was running cold.  ECU was saying it was only 60 degrees or something, when it should be running 150-180 after being warmed up.  It has a new thermostate, coolent temp sensor.  The coolant is actually at operating temperature, but the ECU doesn't report this.

My sunrunner is a 1995, and has the 1.6L 16 valve engine.

Any ideas what going on?  I hope its not a bad ECU!

I should mention that around that time I had a check engine light, the usual- EGR valve.  I cleaned the exhaust manifold, and the hoses running to the solonoid up front and cleared the EGR check engine light.  But the engine still seems to be running hot, the check engine oil comes on after a hard drive sometimes.

Thanks in advance for any ideas you guy have, your better than any mechanic I go to!

C

Title: Re: ECU reads that Engine is running cold ????
Post by: beercheck on August 07, 2007, 12:42:19 PM

Sunrunner.  That's Canada, right?  Any chance the 60 degrees that the dude read from the ECU is actually......Celsius? 

Because 60C = 140F, which sounds perfectly reasonable.

Title: Re: ECU reads that Engine is running cold ????
Post by: Hynzer on August 08, 2007, 08:30:41 AM

Yep, lots of Sunrunners here.  Pontiac rebadged them.

I thought about that when they pulled the numbers, the technician said it was in fahrenheit.  I read somewhere that these suppose run between 174 F(thermostate begins to open) and 212 F(thermostat fully open).

Also, motor seems to burn out cats pretty quickly.  I thought maybe it had to do with the engine running in open-loop mode or something??

Currently there is no check engine light on.