I have a 1995 T100, V6, Extra cab, 4 wheel drive. As I go up really steep hills it begins to sputter. Other wise it's running fine. I have 142,000 miles on it and the fuel filter has never been changed. Do you think this could be what is causing it? If it is the fuel filter, where is it located on my truck. Thanks

I'm not sure where the fuel filter is, but i agree with you that it needs replacing. It probably is full of rust.

Yeah... it could be fuel filter. I would replace that first. Then if that does not help... replace the spark plugs and spark plug wires.

It likely is the fuel filter. I once had this problem and it ended up being the fuel filter. It is located on the frame underneath your truck on the driver's side. It looks like a little cannister with a gas line running in and out of it.

It could also be the Mass Air Flow Sensor (MAF). These are notorious for failing around 120-150K miles on these trucks. The MAF sensor is the black box on the top side of the air cleaner box that measures the air flow into the engine. They cost about $230 for aftermkt and about $400 from the dealer.

As others have suggested, would start with the less expensive things first such as fuel filter and spark plugs (highly recommend staying with OEM dual ground plugs), then work your way up to the MAF.

The fuel filter is on the left side of the frame.

It's about a foot forward of the rear left tire on the inside of the frame.

When you change it MAKE SURE you have pipe type fitted wrenches (the kind you use on break lines). And soak the living baloney out of it with penetrating oil before you go at it.

IF you use normal open end wrenches you'll bend it up or ruin it.

Spot

Howdy, I dug this up on a search and this is my first post.

I'm trying to change my T100 fuel filter. I've located it, I've applied some WD-40 to the threads and I'm prepared to remove it. What are these "pipe type fitted wrenches" you speak of? I only have open ended wrenches, I can't see what a different wrench would be able to do different. I am worried of bending the lines though. My other cars have had hose clamps so the fuel filter swap is easier. Any tips welcome.

Howdy, I dug this up on a search and this is my first post.

I'm trying to change my T100 fuel filter. I've located it, I've applied some WD-40 to the threads and I'm prepared to remove it. What are these "pipe type fitted wrenches" you speak of? I only have open ended wrenches, I can't see what a different wrench would be able to do different. I am worried of bending the lines though. My other cars have had hose clamps so the fuel filter swap is easier. Any tips welcome.
See picture.
1 end of this wrench is OPEN END
the other is a FLARE NUT and this is what you need for fuel and brake lines.
You can see how it grabs the nut on the fuel line, the open end WILL round it off.

Thanks for the reply and the image. I'm off to get one of those wrenches, in the 14mm size which is the fuel line flare nut. Basicily instead of 2 sided, it is about 5 sided, which will be less likely to strip, is that correct?

I also need to get a real penetrating oil, I'll do a search on that too.

Thanks.

Thanks for the reply and the image. I'm off to get one of those wrenches, in the 14mm size which is the fuel line flare nut. Basicily instead of 2 sided, it is about 5 sided, which will be less likely to strip, is that correct?

I also need to get a real penetrating oil, I'll do a search on that too.

Thanks.
Yes, you are correct.
Make sure to get a 19mm (open end) to hold the filter while turning the flare (14mm), or it will bend and you will never get it removed.

A 14mm Flare Wrench coupled with some "Blaster" penetrating oil did the trick. Thanks.

I did a lot of searching on spark plugs, and a lot of people recommend the Denso Iridium IK16 plugs, even sparkplugs.com says they work in the T100. However they are single ground and a sticker on the engine says use dual ground plugs, as a poster above said. Will these .4mm single ground iridium plugs work in the T100 with the 5VZFE ingine?

A 14mm Flare Wrench coupled with some "Blaster" penetrating oil did the trick. Thanks.

I did a lot of searching on spark plugs, and a lot of people recommend the Denso Iridium IK16 plugs, even sparkplugs.com says they work in the T100. However they are single ground and a sticker on the engine says use dual ground plugs, as a poster above said. Will these .4mm single ground iridium plugs work in the T100 with the 5VZFE ingine?
Use the double electrode Toyota Plug. They have a double electrode for a reason. It all has to do with the way the coils fire. The plugs fire twice as often as regular plugs due to the DIS ignition.

The DIS improves the ignition timing
accuracy, reduces high–voltage loss, and enhances the overall reliability of the ignition system by eliminating the
distributor.
Unlike an independent ignition system which has one ignition coil for each cylinder as in the DIS of the 1MZ–FE
engine on the ’94 Camry, the DIS in the 5VZ–FE engine is a 2–cylinder simultaneous ignition system which ignites
2–cylinders simultaneously with one ignition coil.
MOST IMPORTANT----->

In the DIS system of 5VZ–FE engine, each spark plug is connected to the end of the secondary winding. High
voltage generated in the secondary winding is applied directly to 2 spark plugs. In one of the spark plugs, the
spark passes from the center electrode to the ground electrode and in the other plug the discharge is in the opposite
direction, i.e., from the ground electrode to the center electrode.


Twin ground electrode type spark plugs are used on the 5VZ–FE engine. Due to the employment of the DIS system,
the number of spark produced is double that produced in the conventional ignition system. To maintain spark plug
durability, the ground electrodes have been made bipolar.


The single grounds will work, but wont last as long and may damage the coils.

Ah, thanks for explaining that to me. I did notice the coil on plugs were only on one side of the engine but didn't think about it firing every spark plug twice. So the guys that say the Denso or NGK Iridiums worked well on their car must of recently put them in, but after 30,000 miles or so they were toast. Like this guy:

http://www.tundrasolutions.com/forums/out-of-production-trucks-and-suvs/83153-t100-ignition-wires/#post577331 (http://www.tundrasolutions.com/forums/out-of-production-trucks-and-suvs/83153-t100-ignition-wires/#post577331)

Thanks.

I used the Toyota Dual Ground plugs for about the 1st 100K miles on my '95 T100. I then switched to SINGLE GROUND, double platinum (both platinum electrode + platinum ground) plugs. I inspected them at ~160K miles and they still looked like new. Since they fire 2X as often in the T100 vs. a regular ignition system, I think the key to minimizing the wear is having the double platinum. A lot of the plugs out there are only single platinum (ie platinum electrode but a non-platinum ground).

I've run the iridium plugs in my Sequoia. They only lasted about 20K miles. Went back to oem Toyota Platinum plugs and haven't regretted it.

Thanks for the reply. Which double platinum did you install:

Autolite Double Platinum APP3924 .044"
Champion Double platinum RC12PYP .032"

Thanks.

Thanks for the reply. Which double platinum did you install:

Autolite Double Platinum APP3924 .044"
Champion Double platinum RC12PYP .032"

Thanks.
Those plugs are meant for AMERICAN vehicles.
Champions in Toyotas rank right up there with BOSCH :td::td::td::td::td::td::td::td:
I have had bad experiences with both of those types of plugs in a TOYOTA.
Toyota has a patent on their SPARKPLUG heat ranges, so other plugs are only going to be close.
Over the last 23 years I have noted that the NGK or DENSO plugs are the only way to go. NONE of the others outlast or outperform the FACTORY PLUG.They sometimes cost the same or LESS than those aftermarket plugs.
TOYOTA has an option for a PLATINUM DENSO plug for your 95 T-100. If it were me, I would opt for them if your after a platinum plug.
Just my opinion.:D

Thanks, the problem is I don't see a NGK or Denso that is Double Platinum.

Did some digging and finally found the receipt. They were NGK Laser Platinum plugs. Part # BKR5EKPB-11 . The picture I found of them online showed them as a double platinum/double ground... I will pull a plug when I get a chance to see if they really were double ground as I don't remember that.

I also went to the NGK site and looked at all 5 plugs they say work on the T100. Only two of them are double ground:

NGK BKR5EKB-11 (OEM) Link (http://www.ngksparkplugs.com/part_finder/car_truck_suv/partcloseup.asp?stocknumber=3967&partnumber=BKR5EKB-11%20#)
NGK BKR5EKPB-11 (Laser Platinum) Link (http://www.ngksparkplugs.com/part_finder/car_truck_suv/partcloseup.asp?stocknumber=4302&partnumber=BKR5EKPB-11%20*)

Don't worry about pulling your plugs, I'm going to order the "Laser Platinum" ones now and I'll see they are indeed double ground.

Thanks

I started to get the sputter when my 97 was under a load and it turned out to be the ignitor or coil (rubber thing that looks like a flute) that attaches to the spark plug. It had a pin hole in it and it was grounding itself to the engine block durring heavy acceleration. since then I've had 1 other one go bad. they are around 100 bucks from toyota.