I have a 2002 V6 LSE with about 58k miles on it. I drove to my parents house from work the other day ( about 30 miles) and the car was running fine- got home parked it, and then washed it about an hour later. When I started it up to drive it after washing it I had a check engine light on. I took the car for a spin and it was running fine, no misses or stumbles or hesitation. I came back and disconnected the battery for about an hour, and then hooked it back up to go back to my apartment (about 35 miles). I had no light on until about 30 miles into the trip when it came back on. The car is still running fine, not showing any symptoms thats I can feel/tell. About 3 weeks ago I put on an intake, but hopefully that shouldn't be throwing anything (its a KKM). Also, I have run 89 octane before, but this is the first time I've run on it in a few months. Maybe the combo of heat/ac/89 octane caused it? I will get the codes pulled today, but wanted to see if anyone had any ideas why I would get the light but the car still run fine.
Check Engine Light, No Symptoms
- Thread starter smokinf1
- Start date
eL eS
Dedicated LVC Member
Take it to autozone, they will read the code for you for free. Post it back here and we'll see if we can help with the diag.
FastNsmoothLS
Active LVC Member
It sounds to me like 02 sensors...
I can't remember the code numbers now, but it showed up on the Autozone scanner as Excessive EGR flow. They told me possibly EGR valve or diaphragm, but I wanted to check here first. It was p 0402 or some combo of those numbers ( I wish I could remember now- too much going on in my head I guess today). Any other ideas? If I need to get the code read again and get the numbers I'll stop by the Advance on the way home.
FastNsmoothLS
Active LVC Member
The should have given you a print out with the code. Do you have a CAI?
I had the same code come up a few months back. I replaced the EGR valve, cleared the code and it has been fine ever since.
97stscaddy
Dedicated LVC Member
Id try just removing it and cleaning it first.
eL eS
Dedicated LVC Member
If you are talking about cleaning the egr I wouldn't bother. From what I recall of the diagram it would be very difficult to clear any debris from it.