Misfire
- Thread starter joneseyyy
- Start date
MeBe4running
New member
Joneseyyy- I am sorry to hear this. You really have had a tough time with this misfire. Finger's crossed toyota find a solution to this. Be safe
Well Good news and Bad news. Good is, you are not alone. I suffered through this with my wifes 4runner. Bad news is, after 5 trips to the dealer and well over $1000.00 in coil packs and such - problem never got fixed and I traded it.
Lessens learned-
- I rarely do but, don't buy a used rig because somebody just inherited a problem I tried to solve. I would have never sold the vehicle to someone. I did not hide it from the dealer because they were the ones who serviced it 5 times.
- Will but extended warranty on the next rig. The failed attempts got expensive. Now, I am dealing with a different but no less frustrating issue with my Fj cruiser.
Good luck but I don't think the answer will be in coil packs or injectors. Didn't work for me. I find it hard to believe Toyota doesn't have a data base that their mechanics can log into, describe a problem and avail themselves of the solution found elsewhere BUT such efficiency would in fact negate this idiotic "trial and error" approach that nets huge Labor Bills.
Wonderful World we live in.
Lessens learned-
- I rarely do but, don't buy a used rig because somebody just inherited a problem I tried to solve. I would have never sold the vehicle to someone. I did not hide it from the dealer because they were the ones who serviced it 5 times.
- Will but extended warranty on the next rig. The failed attempts got expensive. Now, I am dealing with a different but no less frustrating issue with my Fj cruiser.
Good luck but I don't think the answer will be in coil packs or injectors. Didn't work for me. I find it hard to believe Toyota doesn't have a data base that their mechanics can log into, describe a problem and avail themselves of the solution found elsewhere BUT such efficiency would in fact negate this idiotic "trial and error" approach that nets huge Labor Bills.
Wonderful World we live in.
joneseyyy
New member
Thanks for the support and while it sucks, I am glad that I'm not the only person to have the issue. I've been to the dealer going on 8 times now for this, and have Toyota corporate involved as well. I have a ton of mods on the truck (but nothing on the engine besides remote start) so swapping it for a new 4runner probably isn't an option as it'd probably cost me thousands to uninstall and reinstall everything onto a new truck. If replacing the entire fuel delivery system, ECU, and tearing the top end down is the answer I'm fine with that now; I just need this fixed since much of my precious recreation time requires the truck and I've got a bunch of trips and weekends planned this fall.
joneseyyy
New member
Any codes or lights on the dash?
GrantK
New member
Joneseyy, you must be getting really POed by now. I remember you having this problem before the trip to CO and then on the trip. I bet you would almost welcome a full failure, even if it meant getting towed, if it would make the problem easy to fix.
Good luck, best wishes and keep us informed.
Good luck, best wishes and keep us informed.
no codes or dash lights. the rough idle/engine vibration only happens when the car is on park/idle. they did use some fuel injection cleaner on my last service but it did not help at all. i also called the 1800 toyota customer service and all they can tell me is to get a second opinion. i am so tired of bringing the truck back to the dealer. this is the link where i posted the receipt with what the dealer said to me.
http://www.toyota-4runner.org/5th-gen-t4rs/78647-engine-vibration.html
http://www.toyota-4runner.org/5th-gen-t4rs/78647-engine-vibration.html
Last edited:
joneseyyy
New member
I am pretty POed, but trying to be diplomatic with the dealer since the truck is modded. They in turn have been decent to work with the past 2 trips and now with Toyota involved they're being ok, plan is to continue to be polite but firm that I NEED resolution since the truck is a daily driver AND sees time far from help or where a tow just isn't practical.
Well I assume the Magnuson-Moss Warranty Act is well known here.
You are not and can not be held responsible for mods that do not directly impinge on the malady i.e. You lifted the truck and put tires, a rack and lights on the rig but the fuel injectors are faulty. One does not effect the other and the dealership can not say, "Well, you modified the vehicle so....."
So What?
In some (rare) our lawmakers actually do something that helps not hurts us.
" Lemon Law" read up and read up on the Magnusson-Moss Act
You are not and can not be held responsible for mods that do not directly impinge on the malady i.e. You lifted the truck and put tires, a rack and lights on the rig but the fuel injectors are faulty. One does not effect the other and the dealership can not say, "Well, you modified the vehicle so....."
So What?
In some (rare) our lawmakers actually do something that helps not hurts us.
" Lemon Law" read up and read up on the Magnusson-Moss Act
Magnuson-Moss Act
Tried to add via edit but .... anyway. Dealers can not limit or deny warranty claims due to mods.
They still try because a misinformed or non-informed consumer is a dealers best friend.
Tried to add via edit but .... anyway. Dealers can not limit or deny warranty claims due to mods.
They still try because a misinformed or non-informed consumer is a dealers best friend.
joneseyyy
New member
Well, the dealer is still stumped and can't replicate the misfire. The shop foreman is taking the truck home tonight and driving it in tomorrow with the diagnostic hooked up in the hopes some extra mileage will catch it in the act.
The dealer is also insinuating that the aftermarket Viper Alarm (with remote start) may be contributing/causing the issue, since everything else they've checked (plug, coil, injector, compression, raditor hydrocarbons, fuel pressure, etc. etc.) is in order. While I don't THINK the alarm is the cause, I was never impressed with the quality of the alarm install and am going to have it pulled out by a reputable audio/alarm shop with all of the OEM connections soldered back together. That way it can be eliminated as a possible source.
The saga continues...
The dealer is also insinuating that the aftermarket Viper Alarm (with remote start) may be contributing/causing the issue, since everything else they've checked (plug, coil, injector, compression, raditor hydrocarbons, fuel pressure, etc. etc.) is in order. While I don't THINK the alarm is the cause, I was never impressed with the quality of the alarm install and am going to have it pulled out by a reputable audio/alarm shop with all of the OEM connections soldered back together. That way it can be eliminated as a possible source.
The saga continues...
Hopefully that will show something... but you would think that if the alarm is sending faulty signals, or overloading the system, that would have been picked up already by some weird ECU readings.
hopefully the longer test drive gives them some workable data.. fingers crossed for ya!
Oki
joneseyyy
New member
Update. So the Master shop tech did get the misfire to occur this AM. They traced the source to the power wire to the injector not getting power. They were able to use a secondary power source to run the injector so they determined there was not an issue/short with the wiring harness. At that point, they are looking at the ECU and the way my Viper Alarm is wired in. They believe the ECU is damaged and/or malfunctioning, but are cannot with confidence attribute that to the alarm.
Their proposal: Replace the ECU under warranty, and I pay for 4 hours labor out of pocket for the diagnostic AND for the master tech to remove the Viper Alarm.
To me, this sounds like a good, fair outcome and am relieved that the dealer was able to finally diagnose the issue real-time. Hopefully after the fix we will close the book on this issue.
Their proposal: Replace the ECU under warranty, and I pay for 4 hours labor out of pocket for the diagnostic AND for the master tech to remove the Viper Alarm.
To me, this sounds like a good, fair outcome and am relieved that the dealer was able to finally diagnose the issue real-time. Hopefully after the fix we will close the book on this issue.
philsey
New member
More than fair, and kudos to your dealer for sticking with it. Let's hope that does it.
4ShoreRunner
New member
That is great they were able to replicate the misfire...it was always so hit or miss I was worried it wouldn't happen.
Sounds like a great plan too...you get a new ECU and a hopefully completely and professionally viper uninstall.
Sounds like a great plan too...you get a new ECU and a hopefully completely and professionally viper uninstall.
