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Old 03-04-2010, 01:12 PM
polymixa
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Default The Same Problem (My 97 Nissan Quest)

I got exactly the same problem. My 97 Quest XE has about 87k miles. Initially it had P0120 P0325 P1705 codes. After I cleaned MAF/Throttle and replaced spark plugs/wires, all the above codes went away. But P0300 (random misfire) came up. Nissan dealer wanted to replace all the injectors which I didn't do since I could trust their diagnosis. I went ahead and replaced the whole distributor and TPS sensor. Then P0300 disappeared, but P0306 surfaced. I had an independent shop replaced injector #6. P0306 is gone but P0302 appeared. The shop went ahead and cleaned all three front injectors. But I am still getting CEL. (I am tired of checking the codes now)

One thing I did notice is the timing has not been very stable. It bounces from 3 to 20 during idling. The service manual does say it should be 15 (+/-2). I am not sure whether the misfire is affecting the timing or the timing is causing the misfire.

Quest or Villager owners, please help!
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