Fuel Pump Suction Control Valve

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

Has anyone had any issues with their suction control valves located on the back of the fuel pump? I was reading about these things on a chip manufacturers website. Apparantly they wear out and the ECU dosen't compensate for wear. I tried re-initialising mine last night and it worked as I noticed at idle the fuel rail pressure was sitting below the target pressure, going up to target pressure and dropping back down. The rail pressure wasn't staying constant. The car was much more responsive to drive this morning and afternoon.

The valves cost less than $200. Can they be replaced with the pump on the vehicle or does the pump have to be removed?

[Pragueprado Junior Member Find all posts View Profile Close Pragueprado]

On my vehicle you could replace the SCVs without removing the pump. And yes, they're known for being one of the sensitive parts of the fueling system that are easily clogged. If I recall correctly, I read some posts in this forum saying that Toyota originally tried to not sell replacement valves alone - you had to buy the whole pump. They seem to have gotten over that now.

[awd2.0t Junior Member Find all posts View Profile Close awd2.0t]

Can this be checked via Techstream? If so how & If not how else can it be checked?

Cheers,
Sean.

[OziOffroad Senior Member Find all posts View Profile Close OziOffroad]

Not the 1KD but still in the D4D family:

http://www.youtube.com/watch?v=uhD1C5L2KYI

Hopefully useful or at least gives the confidence to do the job DIY

Mick

[awd2.0t Junior Member Find all posts View Profile Close awd2.0t]

Thanks Mick,

Looks pretty straight forward, which is great. Just wondering how to check them?

Cheers,
Sean.

[Baileys Diesel Group Member Find all posts View Profile Close Baileys Diesel Group]

Can this be checked via Techstream? If so how & If not how else can it be checked?

Cheers,
Sean.

Check this one Sean,

Basically you check it by how much the rail pressure 'bounces'

Matt

[lippa Member Find all posts View Profile Close lippa]

My d40's had a few......

[Baileys Diesel Group Member Find all posts View Profile Close Baileys Diesel Group]

YEP!!! for whatever reason, the D40's seem to be the most sensitive by far...

[awd2.0t Junior Member Find all posts View Profile Close awd2.0t]

Thank's guys,

I'll report back shortly.

Cheers,
Sean

[awd2.0t Junior Member Find all posts View Profile Close awd2.0t]

Double post

[awd2.0t Junior Member Find all posts View Profile Close awd2.0t]

Thank's guys,

I'll report back shortly.

Cheers,
Sean

I couldn't screen shot the TechStream so had to take a pic on the phone. It seems my fuel pressure is a bit all over the place.
Test completed at idle & you can see coolant temps etc.

If you guys could let me know what you think.

Cheers,
Sean.
The number after the file name refers to run time.
Target 35,000 Fuel Press - 35,480


Target 35,000 Fuel Press - 29,990


Target 35,000 Fuel Press - 35,480


Target 35,000 Fuel Press - 31,510

[awd2.0t Junior Member Find all posts View Profile Close awd2.0t]

& the remaining ones:
Target 35,000 Fuel Press - 33,340


Target 35,000 Fuel Press - 35,170


Target 35,000 Fuel Press - 30,900


Target 35,000 Fuel Press - 31,510

[Baileys Diesel Group Member Find all posts View Profile Close Baileys Diesel Group]

Its probably boarder-line. Its around 750-800 PSI min to max based on the above - however normally you would see a positive spike (far less often than it sits below the target, as opposed to over it) buts within the region of starting to give some issues. Toyota state 'acceptable' as between 30,000-40,000 (window a bit wide) which your sitting on anyway.

[awd2.0t Junior Member Find all posts View Profile Close awd2.0t]

Thanks Matt,

I'll add it to the list for May/June when I get the injectors done.

The part number from Pradopoint was 04226-30020, but when I gave Toyota Spare Parts the VIN they said the part number should be 04226-30010. So must be a small change there somewhere??

Toyota want to charge a small fortune of $487 - $535, so I'll see what Amayama come up with.

What is the other part in the Video posted by Ozioffroad? Is it a fuel Temp Sensor? Should this also be replaced? Or are there 2 SCV's like the RAV 4?

Cheers,
Sean.

[120D4D Avid PP Poster! Find all posts View Profile Close 120D4D]

Not the 1KD but still in the D4D family:

http://www.youtube.com/watch?v=uhD1C5L2KYI

Hopefully useful or at least gives the confidence to do the job DIY

Mick

Hi Mick,

Having checked the location of mine and the fact only two hex screws secure it, is it really as easy to change these over as it seems?
Micheal.