fuel pressure regulator 2001 5.3

Are there any special tools required to change a fuel pressure regulator on a 2001 silverado 5.3? Also, is there a brand that is better to get? or would an autozone part do just fine?

Any special precautions to take?

Thanks!!

May I ask..... Why do you want to change it? Do you have low fuel pressure? My 01 silverado 5.3L has an occasional idle stumble, I wonder if I should replace mine. Have you tried autozone's website for assistance in replacing your fuel pressure regulator?

May I ask..... Why do you want to change it? Do you have low fuel pressure? My 01 silverado 5.3L has an occasional idle stumble, I wonder if I should replace mine. Have you tried autozone's website for assistance in replacing your fuel pressure regulator?

I have some minor idle issues. I have changed everything but the O2 sensors, and the fuel pressure regulator. I have heard that these are typical problems in these trucks/engines.

No i havent checked the autozone site.

I just replaced the plugs in mine...it runs better but still not quite right. I'm going to change the wires and probably eventually pay the $90 diagnostic and see what the dealer comes up with, another option is the TB cleaning. Do you know if the fuel sending unit in the gas tank has anything to do with the fuel pressure?

Fuel pumps definitely affect pressure, but the regulator commonly goes bad on the silverado. The regulator is a small, inexpensive and easy diy on the fuel rail. A fuel pressure guage is not cheap, but you can borrow one from autozone. It mostly will relieve the fuel line of pressure so you can remove and replace the regulator. Good luck!

Well I changed my plugs, wires and fuel filter and the truck seems to runs pretty good... It only stumbles right when you turn the a/c on or off. I know a little stumble is regular, but this is a bit more than a little stumble.

Also my truck only idles at 400 rpms.. is that normal?

AC definitely pulls some juice, but it shouldn't hurt the idle on the 5.3. I am curious about your mileage. 50 - 75k you might check the belt, tension. Also a dying battery hits in this range and might affect the idle when ac comes on. Nothing else comes to mind. My 5.3 idles pretty low too without any issues.

It just broke 80k miles, battery is probably a good idea... I'm pretty sure that it is the original. I might also have a belt problem b/c I hear a strang noise when I accel at low speeds... it almost sounds like a ringing noise.

so are there any special tools needed to do this? I dont mind getting a little gas on me :)

I just changed mine on a 1999. All that held mine in place was a retainer clip. The new one came witht a new clip and also had a snap ring which is not used on mine. All you do is un hook the hose and the use a pair of plies and pull the side of the clip and pull up to remove. Once clip is removed pull the old regulator out making sure you get the small o-ring out also by using a pair of needle nose pliers. Push the new one in place and reclip the retainer clip on the regulator and hook the hose up. It took about 10 min tops and all I need were a pair of needle nose pliers.

Hope this helps.

Labatt

Did replacing this make a difference?

I just got a TB cleaning but I have not picked up my truck yet...

Ok thanks!! Are there any particular brands, makers that are better than others? Obviously the GM ones werent too great. Hopefully they have been redesigned?

Please reply, Thanks for all the hints.

I just picked up my truck and it runs absolutley great, I would recommend anyone getting a TB cleaning if they have not had it in the last 60k miles b/c when I got my truck it only had 64k and it was showing signs of a funky idle.

Just curious, justinp.....

Do you have a K&N or another "oil-soaked" type air filter system? Or do you use just a stock air filter system with a standard paper filter? The reason I ask is I have heard that those oiled filters can dirty the TB pretty quickly.
Let me know, thanks!!

The big problem with K&N filters is the oil gets on the MAF and skews the signal back to the PCM. Go light on the oil if your gonna do it. It shouldn't affect the TB, mainly carbon gunks up the TB and causes the throttle to stick.

Yes when i changed the regulator the truck starts and runs 100% better. Before I changed the regulator the truck was hard to start. Roll over and over and I had to press the gas in abit before it would start. Now fires right up. Quick easy fix.

Labatt

Well I've only had the truck for the last year and it has a paper filter in it now and when I got it.
It looks to me like no one ever changed the pvc valve and that gave the TB alot of buildup.

I havent checked the PCV valve.
Where might I find this valve on a 5.3 V8 (2001 SIlverado)??

Thanks

I bought an aftermarket Fuel Regulator for $60. I got the worst gas milage, so I replaced it with a OEM for $100 and my millage was increased significantly. There are a differance in the regulator. I normally do not do Factory replacements, but in this case it was better than the aftermarket version.

I believe the PCV valve is on top on the manifold (however I am not sure). You should see a hose going to it.

The PVC is on the drivers side, all the way in the back, I believe on top of the valve cover. I was told to replace it every 10-15k miles, same with the fuel filter if not sooner.

Im currently working on my dads 01 5.3 silverado and i changed the plugs wires and fuel filt it runs great untill it gets warmed up but then it falls flat on its face it never dies but barely runs. should i try to replace the regulator or the fuel pump? also what is the spec for the fuel pres on the 5.3L autozone couldnt tell me. any help would be greatly appreciated

Im currently working on my dads 01 5.3 silverado and i changed the plugs wires and fuel filt it runs great untill it gets warmed up but then it falls flat on its face it never dies but barely runs. should i try to replace the regulator or the fuel pump? also what is the spec for the fuel pres on the 5.3L autozone couldnt tell me. any help would be greatly appreciated

You should probably start a new post for your problem. Fuel pressure specs are 53 - 65 PSI. If is falls flat after it gets warmed up, you need to see what the ECT (engine coolant temp) sensor is reporting. Do you have access to a scan tool? If you pull off the vacuum hose to the FPR, is there fuel in the vacuum hose?

//2000CAYukon

Im currently working on my dads 01 5.3 silverado and i changed the plugs wires and fuel filt it runs great untill it gets warmed up but then it falls flat on its face it never dies but barely runs. should i try to replace the regulator or the fuel pump? also what is the spec for the fuel pres on the 5.3L autozone couldnt tell me. any help would be greatly appreciated

checking the fuel pressure with a pressure guage, and replacing the fuel filter every 30-40,ooomi ,,,,.

with loss of power after warm up this gets into intake/vecuum leaks,damaged/plugged cat converter,muffler system..

egr operation ,other components.. after the fuel pressure testing check for the DTC failure codes post back what found... this vehicle reports most every little failure...........

I have 180k on my 6.0L all ive done to it to keep it running right is keep the TB clean, change plugs, change wires, oil changes, and keep fluids changed in differentials, transfer case and tranny..... the motor still runs like it did new other than the piston slap when first startyed after sitting long enough to cool down but that goes away in 30 - 90 seconds..... I have never allowed it to get under 1/4 tank gas... gets 16 mpg average and does have a K&N filter ........ finally had front wheel bearing fail on drivers side this week ....... and my truck idles at 500 rpm and always has....