[smj999smj]

I wish the timing belt kits included the coolant bypass hose! Changed my timing belt last year but I didn't know about the bypass hose. I just discovered a leak around that area, it looks like I have to remove a few things to reach it, it would've been a lot easier to do with the timing belt.

The aftermarket bypass hoses don't fit as well as the genuine Nissan hose, which has a sharper 90-degree bend in it. The aftermarkets have a more rounded bend and sometimes you have to trim them and even when you do, they just don't fit as well. Usually when they leak it's because of corrosion of the aluminum outlet under the hose. If you have it, you'll need to clean it all off. If it's badly pitted and you don't want to replace the thermostat housing, apply some RTV sealant to fill in the pits.

 

[retrobits]

Just performed timing belt + waterpump service on my 2000 frontier. Thanks to all who have shared experience on this thread.
I used the ASIN TKN001 kit from Rockauto. For the belt install & tensioning, I followed the instructions from smj999smj on post #201.
Everything was perfect on the first try. Truck is running great and ready for the next 100K.

 

[smj999smj]

Looks great for being just over two decades old!

 

[Steveie]

Here is cool how to set timing for vg33 and vg30.

 

[Steveie]

Replacing these front oil pump seal are important.

 

[smj999smj]

Here is cool how to set timing for vg33 and vg30.

Actually, that's not how to adjust the timing properly. He left out the step of putting the engine into "timing set mode." You are supposed to run the engine at 2000 RPM for 2-minutes to get the engine temperature up to normal operating temperature. Then, you are supposed to shut the engine off and unplug the throttle position sensor. Start the engine and rev it a couple of times; now the ECM is in timing set mode. At this point, the procedure can be followed in the video to adjust the timing. Then, the base idle can be set to spec. When done, the engine is shut off and the throttle position sensor can be plugged back in.

 

[Steveie]

Actually, that's not how to adjust the timing properly. He left out the step of putting the engine into "timing set mode." You are supposed to run the engine at 2000 RPM for 2-minutes to get the engine temperature up to normal operating temperature. Then, you are supposed to shut the engine off and unplug the throttle position sensor. Start the engine and rev it a couple of times; now the ECM is in timing set mode. At this point, the procedure can be followed in the video to adjust the timing. Then, the base idle can be set to spec. When done, the engine is shut off and the throttle position sensor can be plugged back in.

The engine temperature was to 190F degree. Don't need to race it to 2000 rpm.
Here is another video to deal with any TPS fast engine idle issue.

 

[smj999smj]

Replacing these front oil pump seal are important.

30+ years of doing VG timing belts and I've never had to install a second seal at the front of the crank! What I would always do is spray the old seal with carb cleaner, which would soften the seal and make it easier to remove. Then I would use a seal puller to pull out the old seal. I would polish the sealing area around the end of the crank with a Scotch pad and clean it with a soft rag and brake cleaner. I would then grease the inside of the new seal and install it. I never had to put adhesive on the outside of the seal, either.

 

[Steveie]

30+ years of doing VG timing belts and I've never had to install a second seal at the front of the crank! What I would always do is spray the old seal with carb cleaner, which would soften the seal and make it easier to remove. Then I would use a seal puller to pull out the old seal. I would polish the sealing area around the end of the crank with a Scotch pad and clean it with a soft rag and brake cleaner. I would then grease the inside of the new seal and install it. I never had to put adhesive on the outside of the seal, either.

I'm only trying to help. Glad it help others. I know you ASE are extremely clean, when do you work?.

 

[smj999smj]

The engine temperature was to 190F degree. Don't need to race it to 2000 rpm.
Here is another video to deal with any TPS fast engine idle issue.

Go to your 2003 Nissan Frontier factory service manual, page EC-610. On page EC-610, under "check ignition timing," Step 1 says, "Run engine at about 2000 RPM for about 2-minutes under no load." Step 2 says, "Rev engine (2,000 to 3,000 RPM) two or three times under no-load, then run engine at idle speed." Step 3 says, "Turn off engine and disconnect throttle position sensor harness connector." Step 4 says, "Start and rev engine (2,000 to 3,000 RPM) two or three times under no-load, then run engine at idle speed." Step 5 says, "Check ignition timing with timing light."
M/T: 10 degrees +/- 2 BTDC
A/T: 10 degrees +/- 2 BTDC (In "P" or "N" position)

Those are Nissan's words, not mine.... It's great that you are trying to help, but it's best to help by giving the proper information, that's all. There's a reason the Nissan ECM has a "timing set mode" and that's to accurately set the timing and base idle without any sensor input to the ECM influencing the ignition timing and without the IACV-AAC valve affecting the idle while the base idle speed is being adjusted.

 

[Steveie]

Go to your 2003 Nissan Frontier factory service manual, page EC-610. On page EC-610, under "check ignition timing," Step 1 says, "Run engine at about 2000 RPM for about 2-minutes under no load." Step 2 says, "Rev engine (2,000 to 3,000 RPM) two or three times under no-load, then run engine at idle speed." Step 3 says, "Turn off engine and disconnect throttle position sensor harness connector." Step 4 says, "Start and rev engine (2,000 to 3,000 RPM) two or three times under no-load, then run engine at idle speed." Step 5 says, "Check ignition timing with timing light."
M/T: 10 degrees +/- 2 BTDC
A/T: 10 degrees +/- 2 BTDC (In "P" or "N" position)

Those are Nissan's words, not mine.... It's great that you are trying to help, but it's best to help by giving the proper information, that's all. There's a reason the Nissan ECM has a "timing set mode" and that's to accurately set the timing and base idle without any sensor input to the ECM influencing the ignition timing and without the IACV-AAC valve affecting the idle while the base idle speed is being adjusted.

I don't know what you trying to prove but make me look stupid. I have done my part in this video and it work great just the same has factory OEM. Its my video. Not Nissan or ASE certify

You might be one of them DNA guys. 🌴

 

[smj999smj]

The engine temperature was to 190F degree. Don't need to race it to 2000 rpm.
Here is another video to deal with any TPS fast engine idle issue.

While there is a lot of good info on this video, the adjustment of the throttle position sensor/closed throttle position switch is not correct. It was the procedure when Nissan began using this type of TPS with its "learned idle position memory," which is different than the early Nissan TPS with its hard setting, but Nissan revised the procedure in 1999 after having some problems with these TPS units. Initially, the procedure was described and illustrated in Nissan technical service bulletin NTB99-053b (see link to TSB below) and then later the factory service manuals were updated or printed with the revised TPS adjustment procedure, which uses a specific set of feeler gauges and an ohmmeter to properly set the idle position for the closed throttle switch. So, refer to the TSB for the procedure, but if your Nissan is a later year than the models on the TSB, it's best to consult the factory service manual for the correct size feeler gauges needed to do the adjustment. If you don't have an FSM, you can access free, online Nissan manuals at Nico Club's site.

http://lyberty.com/car/Maxima_A32_docs/EC-engine_control/NTB99-053b.pdf

I should also mention that the procedure instructs to use a scan tool to view the closed throttle position setting while doing the relearn procedure, which is essentially turning the key "on" for a couple of seconds and turning the key "off" for a couple of seconds, repeating this cycle until you can see the closed throttle position idle setting is learned. Unfortunately, not everyone has a scan tool to do this, but I usually find that repeating the procedure for around 12-13 cycles typically is enough to complete the relearn.

 

[smj999smj]

I don't know what you trying to prove but make me look stupid. I have done my part in this video and it work great just the same has factory OEM. Its my video. Not Nissan or ASE certify

You might be one of them DNA guys. 🌴

It's never my intention to make you or anyone else look stupid and I appreciate your input on these forums. However, it is also the intention of these forums to provide not only helpful, by accurate and correct information. There is information on the videos that is either wrong or, in the case of the TPS/closed throttle switch adjustment, very outdated and incomplete. As one of the moderators on this site, it is my duty to make help sure the members receive accurate and up to date information.

 

[Steveie]

One of the easiest v6 timing belt job.

 

[Steveie]

Timing belt after 110,000 miles

Not in bad shape but it was pretty loose.

Nissan makes the best parts for our vehicle. My timing was good beyond 140,000 mikes. Now running GATES belt.

 

[Steveie]

youtube is a messed up platform to post help videos. I had a three part series video showing the vg33e timing belt replacement procedure and the clowns at Google delete my complete channel like the clowns on this forum who banned me for helping you.

 

[Cusser]

I wish the timing belt kits included the coolant bypass hose!

I wish old VW rear brakes came with the horseshoe clips and rear axle nut large cotter pins, one ALWAYS needs those when doing rear brakes on those. Really dumb ('m sorry: dummmmmm) in my opinion. So I agree with you, Irv CL.

 

[Fron4x4tier]

here's what mine looked like!
Nissan actually manufacturer fail safes when torquing belt tensioners!