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2002 Toyota Tacoma 2002 Tacoma engine hesitates and backfir

Tiny
BWILLIAMSON
  • MEMBER
  • 2002 TOYOTA TACOMA
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
I recently (last 6 months) had the engine tuned up. Was sitting at a red light a few weeks ago and felt the engine hesitate. When I took off the engine sputtered then backfired. The backfire however didnt come from the tailpipe more behind the engine right underneath the cab. Problem has gotten worse in the last few weeks any ideas what could be the problem?
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Monday, May 4th, 2009 AT 12:18 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi bwilliamson,

Thank you for the donation.

Symptoms seems to indicate misfiring from the engine which could be caused by spark plugs, ignition coils, spark plug wires or fuel injectors.

Is the Check Engine Light showing? You can get a scan done free at you local Autozone part outlet to retrieve Diagnostic Trouble Codes. Let me know the exact DTC if any and we can try to work out a solution.
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Monday, May 4th, 2009 AT 2:39 PM
Tiny
BWILLIAMSON
  • MEMBER
  • 2 POSTS
I finally got the trouble codes from Autozone. I believe these are what your looking for if they arent I have the printout. Code #1 p1135 Code #2 p0301 Code #3 p0300 I know one of these codes is for the front O2 sensor. The guy at Autozone told me the other code means I need a tune up but I just had a tuneup about 6 months ago. Also while doing some research on the net I found this one website that said O2 sensors dont go bad they just need to be cleaned. If this is true how do you go about cleaning it as Autozone is charging well over $300 just for the one sensor. Thank you so much in advance
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Friday, May 15th, 2009 AT 6:01 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
P1135 is a fault with the front Heated O2 sensor or circuit.


https://www.2carpros.com/forum/automotive_pictures/192750_DTCP0300_02Tacoma_1.jpg



https://www.2carpros.com/forum/automotive_pictures/192750_DTCP0301_02Tacoma_1.jpg



Since only P0301 is present for cylinders misfiring, I would suggest checking the first cylinder spark plugs and ignition coils.
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Saturday, May 16th, 2009 AT 4:17 PM

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