Service Engine Soon light

Cheap/defective parts. If you have a notion, put in the phrase:

"counterfeit auto parts"

into Google and spend a few hours getting educated.

Ted

I was offer the choice of the cheap set or the "premium" set. I choose the premium. However, if special wires are required, then I guess this distinction may be moot.

I am assuming the car still runs without issue and keep in mind that without seeing the codes it is just a guess at this point. With that said (and though it would be quite early on), I would make my first one O2 Sensor. A couple other responses I have seen regarding low end plug wires I would find doubtful. One, if this were the cause there would most certainly be a change in how well the car ran (hesitation, rough idle, something) and I do not see where it would set a code. Now the possibility of a BAD wire/plug could cause this I suppose, but again, you would notice a difference in the way the vehicle ran and you make no mention of this.

Try pulling the codes from the ignition switch (On, Off, On, Off, On). This should cause a sequence of grouped flashes of the check engine light. Each group separated by a short pause. For example: 1, 2, 2, 1, 5, 5, would work out to code 12, 21, 55

Have you double checked all the wire harnesses around where you were working to be sure you did not knock one loose while doing the tune-up?

Yes, the van runs quite well now. Yes, I did check the wiring around where I was working, just to make sure I didn't do something stupid, and found nothing out of place. Of course, this does not guarantee that I didn't do something stupid, but if I did, I can't find it.

I will check around the O2 sensor and see if I can find anything amiss. Failing this, I will, no doubt, find out tomorrow when I bring it in to the dealer for warranty and recall repair.

I was under the impression that the on-off-on-off-on-off did not work on after the '96 model year. (It works fine on my '92 Dynasty). Am I wrong in this assumption? I'll have to check it out.

Well, got a call back from the dealer. The light was set because the cooling fan relay had shorted. OK, so it was not anything I did, but just a co-incidence. The bummer part about this is that this part is not covered by my extended warranty, and I have to pay to get it fixed. ($275.00). My next investment will be in a OBD II code scanner and a FSM for this vehicle.

Fan relay $275 !!!!! Pick one up at Advance or AutoZone and pop it in yourself.

Well, today, 6 days after it was "repaired" the light came back on again, and the radiator fans don't work, and the engine overheats. Last time they replaced a fuse ( part number 4868008-AA) and the radiator fan relay (Part # 4707286-AF). I have another appointment at 7:00 AM Monday. I wonder what they will do this time? Anyone here have any thoughts?

How did it go?

Ted

Well, they replaced the radiator module and the fuse. Part numbers 7002001 and 8017002. It seems to be functioning correctly, but let's see if it lasts longer than a week this time. They said that the module was intermittently drawing too much current and blowing the fuse. There was no charge this time. (Total bill would have been just over $500.00)

The tech's notes say this:

Recheck SES light and fans inoperative. Found the circuit protection blown again, found the coolant fan module would intermittently have high amperage draw and would blow the fuse. Replaced the module, deduct waived. Prior history. C/S/C07150101/0.7/9R 85410000/0.9

This is what I don't quite understand.

This would appear to me (and I could quite easily be very wrong) that the repair this time was covered by the warranty. I can't seem to tell for sure by the paperwork I have. If this is so, (and, like I said I don't know for sure) it would appear that the dealer collected twice for the same problem on my van. Once by cash that I paid, once by warranty.

Is there any way that I could find out for sure? If he did collect twice, and the first time which I paid for didn't fix the problem, would I be entitled to a refund?