car runs fine untill warmed up - Toyota Nation Forum : Toyota Car and Truck Forums

tbss1 · 03-02-2011, 01:34 AM

I have a 93 camry LE V6 auto with 127,000 miles. I did a tune up changed plugs, plug wires, cap, rotor. Ran fine for the last six months, but, now when i start it in the morning it runs fine, untill it gets warmed up, then it runs like it's missing, and I can smell unburnt fuel. can anyone help me please?

***BMR*** · 03-02-2011, 01:48 AM

What brand of plug wires were used? Some of the aftermarket stuff out there is total crap. I once used Autozone's store brand that last about 12k miles; the engine developed a miss at idle. Got a new set under the lifetime warranty. The second set lasted less than that.

tbss1 · 03-02-2011, 01:58 AM

I got oe stuff. I also did the cleaning on the egr, iac, and fuel filter. Do you think it could be the ecu? I listen to the injectors, and I can hear them working.

stlwil · 03-02-2011, 05:49 PM

could be a cracked ignition coil .its in the dizzy under the cap

***BMR*** · 03-02-2011, 10:02 PM

Quote:

Originally Posted by stlwil

could be a cracked ignition coil .its in the dizzy under the cap

Really?... Did Toyota change the design from '92 to '93? On my '92, the coil's mounted to the driver's-side strut tower.

Where ever it is, that's good suspect to check out. Sometimes cracks are so small they're hard to see. So when it's warmed up and running rough, check your spark. Want to see a nice strong blue-white spark.

Quote:

Originally Posted by tbss1

I got oe stuff.

Good! That takes those off the suspect list.

csaxon · 03-03-2011, 12:34 PM

Check the ECT sensor. It thinks the engine is cold and signals for more fuel.