Question about 1997 Toyota Tacoma
Have you replaced the coil yet? I assume by all 4 cylinders misfiring you mean P0300 Random Misfire? It could be a number of other things - a faulty fuel injector, coil, etc. Read this article for more info on random misfires - http://www.obd-codes.com/p0300
Posted on Dec 14, 2008
I don't have a solution but I can tell my story on code P0300. 2002 Buick Rendezvous. What I have replaced so far that did not fix the misfire problems are 1. EGR valve, 2. throttle position sensor, 3. Idol air control valve, 4. The rear crank position sensor, 5. the control module under the coil packs, and 6. the fuel filter. So far it seems to run a little better when I unplug the EGR valve but that is only temporary. I still have the stumbling random misfire but not all the time. It comes and goes. Currently it will run smooth and strong for a while, maybe 10 miles or so, then it just looses power. When I back off the gas it smooths out a bit then as I accelerate again it misfires all over the place with the tach jumping up and down. It will do this sometimes for a few seconds to a few minutes then smooth out and run strong and smooth again. The a mile or so down the road it will misfire again all over again. Sometimes it goes for 30 miles without a misfire at all. I have to question how the cat could cause this issue as mentioned in the list of possible causes.
Posted on Apr 24, 2012
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 28, 2014 | 1990 Oldsmobile Cutlass Ciera
Feb 26, 2013 | 2004 Dodge Dakota
Mar 01, 2011 | GMC Safari Cars & Trucks
Dec 08, 2010 | 1999 GMC Jimmy
Mar 16, 2010 | 1995 Toyota Tacoma
Mar 05, 2010 | 1997 Jeep Grand Cherokee
Nov 02, 2009 | 2003 Chevrolet Impala
Apr 08, 2009 | 1996 Ford Contour
752 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: