1G Exhaust leak cause CEL?

[Shinotheweevil]

Hey guys,
Can an exhaust leak cause a cel light on a 1990 eclipse?

 

[pauleyman]

Depends on where it is.
It's best to tell us the problem you are experiencing and let is help you sort it out. Provide details please.

 

[Shinotheweevil]

I honestly can't put that much detail. I didn't have a CEL light, but I heard a slight rattle in my exhaust and I noticed a slightly loose bolt right before the catalytic converter. After I tightened it up I got a CEL light. I wouldn't think I should get it since I have OBD 1 and I haven't really got a chance to pull codes yet.

 

[BLACK'98DSM]

If it's leaking before the 02 sensor it will throw off your readings.

 

[pauleyman]

I honestly can't put that much detail. I didn't have a CEL light, but I heard a slight rattle in my exhaust and I noticed a slightly loose bolt right before the catalytic converter. After I tightened it up I got a CEL light. I wouldn't think I should get it since I have OBD 1 and I haven't really got a chance to pull codes yet.

You're shooting in the dark without the code. I wouldn't jump to conclusions.

 

[Shinotheweevil]

Hey guys,
Sorry for the late reply, but when I went to pull the codes I noticed the CEL light is gone. Weird. I have also been driving it this week and no more CEL light. Well I guess its solved for now, but thanks everyone who replied to me!

 

[steve]

So did you read the codes anyway? I though old faults are stored until an ECU reset. If they are no longer active faults the light is off.

 

[1990TSIAWDTALON]

I bet he had "pending" codes. I keep a code reader in my DD because I hate seeing my CEL for a stupid recirculating exhaust code on my Saturn.