Engine noise *solved with tune-up*

Pauleo · Post by **Pauleo** » Fri Sep 02, 2005 10:20 am

I have noticed a noise coming from the engine with somewhat hard accelerating. Like when pulling onto a highway from a stopped position. It does it through first gear and stops just before third. Almost sounds like a vaccuum hose or something. I wish that I could describe it better than that.

It could be coming from the driver side if that helps. I also noticed that the truck pulls harder when the noise stops. Any ideas???

Pauleo · Post by **Pauleo** » Sat Sep 03, 2005 5:50 am

OK. Never mind! I guess I'll reply to my own post.
Problem SOLVED!!!

I put in the NGK Irridium plugs last night and now the noise is gone. Must have been some severe spark plug knock, I guess. Anyway, the noise is gone and the truck pulls well through out now. I have the Taylor wires on order from Summit. Can't wait to get those puppies in now!!!

F9K9 · Post by **F9K9** » Sat Sep 03, 2005 5:59 am

My Taylors, cap, rotor and NGKs are ordered and enroute too

Post by **HenryJ** » Sat Sep 03, 2005 6:10 am

Good move not waiting to 100k. You should notice a smoother idle , and who knows maybe it will refresh enough to gain back a little mileage.

F9K9 · Post by **F9K9** » Sat Sep 03, 2005 6:19 am

HenryJ wrote:Good move not waiting to 100k. You should notice a smoother idle , and who knows maybe it will refresh enough to gain back a little mileage.

Definitely need the mileage. I'm searching for fuel filter replacement thread now. I still have a new one I bought for my '97 that I gave up trying to change due to incorrect tools but, I have them now!

Post by **HenryJ** » Sat Sep 03, 2005 6:36 am

f9k9 wrote:... searching for fuel filter replacement thread now.

Here it is- replacing fuel filter

F9K9 · Post by **F9K9** » Sat Sep 03, 2005 6:55 am

HenryJ wrote:
f9k9 wrote:... searching for fuel filter replacement thread now.
Here it is- replacing fuel filter

Thanks, HJ

Pauleo · Post by **Pauleo** » Sat Sep 03, 2005 6:59 am

f9k9 wrote:My Taylors, cap, rotor and NGKs are ordered and enroute too

I wanna get the cap & rotor too. I just have to figure out where I want to get them from.

F9K9 · Post by **F9K9** » Sat Sep 03, 2005 7:25 am

Advance Auto Parts

Pauleo · Post by **Pauleo** » Sat Sep 03, 2005 10:17 am

Yeah. I saw HJ's write up on Niehoff. I was just looking around here locally to see if I could find anything comparable before ordering from them. My local Advanced Auto Parts carries only the GP Sorenson brand. (Junk aluminum connections) I'm gonna try NAPA and if they don't have anything I want, I'll order from your link above.

F9K9 · Post by **F9K9** » Sat Sep 03, 2005 10:53 am

I gave up locally but, I know Lancaster is much larger than London. I looked around and then my vacation was upon me and I paid the piper dearly so, I ordered evrything this morning. The fuel filter is replaced and my Airaid is soaking as I type.

Pauleo · Post by **Pauleo** » Sat Sep 03, 2005 11:05 am

I really wanted to do some more work to my truck over this holiday weekend so I settled for the Napa brand, Echlin. They were in stock. They have the brass connections I was looking for and I do believe they were Brule's #2 choice at least. So I don't think I went too aweful wrong. I guess time will tell.

F9K9 · Post by **F9K9** » Sat Sep 03, 2005 11:38 am

Anything over OEM is an improvement

I don't think you went wrong at all

Pauleo · Post by **Pauleo** » Wed Sep 21, 2005 10:35 am

O.K.. So I didn't fix it after all. I am still having the same issues!!!

Pauleo wrote:I have noticed a noise coming from the engine with somewhat hard accelerating. Like when pulling onto a highway from a stopped position. It does it through first gear and stops just before third. Almost sounds like a vaccuum hose or something. I wish that I could describe it better than that. It could be coming from the driver side if that helps. I also noticed that the truck pulls harder when the noise stops. Any ideas???

F9K9 · Post by **F9K9** » Wed Sep 21, 2005 11:16 am

Well, it's hot here. Do you know what the fan clutch sounds like? I assume you do but, it case you don't it makes a roaring sound when engaged and is a real power drain on mine. I am definitely going electric before next summer.

Pauleo · Post by **Pauleo** » Wed Sep 21, 2005 12:21 pm

No. Not the fan clutch. I am familiar that roaring noise. Maybe it's some kind of engine knock?? I don't know. Like I said, it doesn't do it all the time. Just on hard acceleration from firt gear. I absolutely hate it!

F9K9 · Post by **F9K9** » Wed Sep 21, 2005 12:53 pm

It was truly a shot in the dark, sorry I wasn't any help

I wish we just had simple problems that had simpler answers

I miss the good old days and I've heard on Paul Harvey's radio show recently that a good mechanic/technician can easily make 150k/yr. It would be worth it but, simple stuff like software upgrades would be the killer if, he didn't work for a dealer.

We had a court reporter get a 1 CD software upgrade for her program that she uses in court and paid $1,900 for it. I asked her what would happen if she skipped the upgrade and she explained that basically all of her investment would be worthless within months

Hopefully, others will have something for you to check. I went through my SI techline program and struck out

Pauleo · Post by **Pauleo** » Wed Sep 21, 2005 2:48 pm

No problem, man! I don't know what the heck this noise could be considering when it happens. Thanks!!!

killian96ss · Post by **killian96ss** » Sat Sep 24, 2005 5:44 pm

What year is your Crew? I had a similar problem that I figured was just my trucks way of saying I need a tune-up. I did a full tune up including cap, rotor, plugs, and plug wires. After everything was installed the problem seemed to go away, but eventually came back. Overall it turned out to be my central port fuel injector was failing. My dealer replaced the entire fuel injection system with the upgraded multi port style injection. This was done free of charge, because it was a type of recall by GM for 96-02 S10's. I have also had some really bad luck with the NGK Iridiums on the Crew Cab, mainly because they were causing serious misfires, which immediately went away after installing new Delco platinums. This may not be your problem, but thought I would share it with you anyway, just in case.

Steve

Pauleo · Post by **Pauleo** » Mon Sep 26, 2005 11:35 am

killian96ss wrote:What year is your Crew? I had a similar problem that I figured was just my trucks way of saying I need a tune-up. I did a full tune up including cap, rotor, plugs, and plug wires. After everything was installed the problem seemed to go away, but eventually came back. Overall it turned out to be my central port fuel injector was failing. My dealer replaced the entire fuel injection system with the upgraded multi port style injection. This was done free of charge, because it was a type of recall by GM for 96-02 S10's. I have also had some really bad luck with the NGK Iridiums on the Crew Cab, mainly because they were causing serious misfires, which immediately went away after installing new Delco platinums. This may not be your problem, but thought I would share it with you anyway, just in case.

Steve

WOW! That's some good info! I'll have to add that to my "to do" list for the dealership!!! My crew is an `01. So I should be good to go for that recall! I'll keep my fingers crossed. I am getting frustrated with all the stupid noises & things this truck makes. I am going to keep at it though. I must admit that I was at the dealership the other day looking at an `05 1500. That is, until my wife smacked me upside the head with a 2x4 for even considering it!!!

I'll keep you all posted. But again, thanks for that info!

killian96ss · Post by **killian96ss** » Mon Sep 26, 2005 12:46 pm

This is the recall I am referring to. The only problem I see for you is that you don't live in California which is exactly why I didn't have to pay for this repair, but if your Crew has the CA emission (RPO YF5) you might be able to talk them into doing it for you as long as the fuel injection system is to blame for your problem, although GM might tell you that it's only covered in CA.

I think Brule mentioned that if you had to pay for the parts yourself, it would cost about $200.

Campaign - Fuel Injector Sticking Closed

File In Section: 06-Engine Emissions

Bulletin No.: 99066F

Date: March, 2003

SPECIAL POLICY

SUBJECT:
99066F - SPECIAL POLICY ADJUSTMENT - SEQUENTIAL CENTRAL PORT
FUEL INJECTION (SCPI) FAILURES IN CALIFORNIA ONLY (YF5
EMISSION EQUIPPED)

MODELS:
CERTAIN 1996, 1997, 1998, 1999, 2000, 2001, 2002 S/T, M/L, C/K, G,
P, W4/NPR TRUCKS AND 2003 NPR TRUCKS EQUIPPED WITH 4.3L
(RPO L35 - VIN CODE W OR RPO LF6 - VIN CODE X), 5.0L (RPO L30
- VIN CODE M) OR 5.7L (RPO L31 - VIN CODE R) ENGINE AND
CALIFORNIA EMISSION EQUIPPED (RPO YF5)

This bulletin is being revised to add the 2002 and 2003 model years to the SCPI Special Policy on certain S/T, M/L, C/K, G, P and W4/NPR truck models. Please discard Special Policy Bulletin Number 99066E, dated February, 2003.

CONDITION

Some customers of 1996, 1997, 1998, 1999, 2000, 2001, 2002 model year S/T, M/L, C/K, G, P, W4/NPR trucks and 2003 NPR trucks, that are registered in California, equipped with 4.3L (RPO L35 and VIN Code W, or RPO LF6 and VIN Code X), 5.0L (RPO L30 and VIN Code M) or 5.7L (RPO L31 and VIN Code R) engine, and California emissions (RPO YF5), may experience a "Service Engine Soon" light, misfire, rough idle or hard start due to a deposit build-up on the Sequential Central Port Fuel Injector (SCPI) poppet valve(s). The deposit build-up may cause injector poppets to stick closed. Certain fuels have been found to interact with the SCPI system to cause the deposits.

SPECIAL POLICY ADJUSTMENT

This special policy covers the SCPI failure condition described above for a period of ten (10) years or 200,000 miles, whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.

The repairs will be made at no charge to the owner. This special policy applies ONLY to repairs requiring SCPI system servicing, injector cleaning and/or MFI assembly replacement of the SCPI system. The customer should not be charged for performing a system check when it is determined that the SCPI system is not the cause of a customer complaint (labor operation T5532 is provided to submit claims for such system checks). Any additional necessary diagnosis and repairs that are not related to the SCPI condition are not covered by this special policy. The customer should be informed that any further service that is not covered by new vehicle warranty will not be covered by this policy.

VEHICLES INVOLVED

Involved are certain 1996,1997,1998,1999, 2000, 2001, 2002 S/T, M/L, C/K, G, P, W4/NPR and 2003 NPR model vehicles, registered in California, equipped with 4.3L (RPO L35 - VIN Code W, or RPO LF6 - VIN Code X), 5.0L (RPO L30 - VIN Code M) or 5.7L (RPO L31 - VIN Code R) engine; and California emissions (RPO YF5). This Special Policy covers all vehicles within these model years, with these engine and emissions RPO's.

Steve

Post by **HenryJ** » Mon Sep 26, 2005 2:21 pm

New design 96-up SFI injectors!

killian96ss · Post by **killian96ss** » Mon Sep 26, 2005 2:41 pm

Thanks for the link Brule!

It seems that if you live in CA any GM dealership will do this upgrade free of charge. Now that I have this upgrade I can tell you the engine runs smoother, idles better, has a little more power, and I'm getting an extra 1-2 mpg.

The mpg change isn't a surprise due to the effiency of MPI vs. CPI. I have even detuned to 87 oct. with the Hypertech (to save $) yet the engine still seems more powerful than when I had CPI and 93 tuning.

Steve

Pauleo · Post by **Pauleo** » Mon Sep 26, 2005 3:53 pm

Well, I made the call to my local dealership. I gave them a nice list of things to check.

#1 Engine noise in hard acceleration from 1st to just before 3rd gear.

#2 My delayed wipers delay to whatever pace they want to be at regardless of the setting.

#3 The infamous 1/4 tank issue.

#4 Thump/Clunk noise that I just can't seem to figure out! (Described in another topic.) They supposedly fixed this problem once already!!!

#5 & #6 I threw in the fact that my tailgate cables are both broke and my driver's door is out of alignment with hinge pins that keepn trying to come out.

I know that #5 & #6 are probably not going to be covered under my extended warranty, but I thought it was worth a try anyway. If they're not covered, I'll fix the tailgate cables myself. Something I should have done months ago after reading the fix on this board. And I'll just live with the door problem.

I drop the truck off tomorrow morning. I figure I should be without it for a good MONTH or so!!!

I'll keep ya posted!!

F9K9 · Post by **F9K9** » Mon Sep 26, 2005 3:56 pm

Am afraid #s 2 and 3 will be a lost cause but, maybe you have a dealer that will tell you that there isn't a fix.

Pauleo · Post by **Pauleo** » Tue Sep 27, 2005 5:26 am

f9k9 wrote:Am afraid #s 2 and 3 will be a lost cause but, maybe you have a dealer that will tell you that there isn't a fix.

Probably. But the service manager who waited on me sounded like he knew where I was coming from. Like he had heard of these problems before. I promptly whipped out a copy of the TSB on the 1/4 tank issue that I printed off from this site. I kinda think he was impressed!

The truck is sitting over there at the dealership right now. Time will tell. I'm anxious to hear the findings!!!

F9K9 · Post by **F9K9** » Tue Sep 27, 2005 7:20 am

Well, I hand my sending unit replaced and the newest edit. I better but, far from right.

Pauleo · Post by **Pauleo** » Tue Sep 27, 2005 11:10 am

Update!!!!

O.K.. So I got the call from the dealership. My engine noise is air being drawn in or moving through a cracked throttle body housing??? I can't remember what he said. I think he meant that it was the plastic part that sits on top of the throttle body and goes out to the air box. I remember cracking it somehow when I did the body lift. They want $91 for a new one. I should be able to pick one up at a junk yard I would think!

They are fixing my wiper problem. They said it was the board. (Warranty)

The infamous 1/4 tank of gas can be supposedly fixed if they reflash the computer. $36 for that.

The thump/clunk ended up being the tranny mount. (Warranty)

They also found a bad wheel bearing. (Warranty)

Here's the funny part. They said my front brake pads & rotors are shot. They said the pads are about $50 and the rotors are $180 a piece!!!! Plus $140 labor!!!! I think they been smokin' sumpthin'!!! Called my local parts store and The best pads are $46.88 and the rotors are $29.88 a piece! So guess what I'm gonna be doing this weekend????

I haven't done brakes in a while so look for a NEW TOPIC on brakes!!!!

killian96ss · Post by **killian96ss** » Tue Sep 27, 2005 11:32 am

Pauleo wrote:I think he meant that it was the plastic part that sits on top of the throttle body and goes out to the air box. I remember cracking it somehow when I did the body lift. They want $91 for a new one. I should be able to pick one up at a junk yard I would think!

I have the whole stock intake system if you need something. Let me know and I'll make you a great deal on whatever you need.

Steve

Pauleo · Post by **Pauleo** » Tue Sep 27, 2005 11:50 am

killian96ss wrote:
Pauleo wrote:I think he meant that it was the plastic part that sits on top of the throttle body and goes out to the air box. I remember cracking it somehow when I did the body lift. They want $91 for a new one. I should be able to pick one up at a junk yard I would think!
I have the whole stock intake system if you need something. Let me know and I'll make you a great deal on whatever you need.

Steve

WOW! Thanks, Steve! I'll find out exactly what it was when I pick the truck up tomorrow!

Pauleo · Post by **Pauleo** » Tue Sep 27, 2005 11:52 am

You guys are ALWAYS so very helpful!!!

Does anyone know how to run a backhoe? I need to have a new leach bed dug at the house!!!

killian96ss · Post by **killian96ss** » Tue Sep 27, 2005 12:02 pm

Pauleo wrote:Does anyone know how to run a backhoe? I need to have a new leach bed dug at the house!!!

Well actually umm no, but I think a few sticks of dynamite would be easier!

Steve

Pauleo · Post by **Pauleo** » Tue Sep 27, 2005 1:01 pm

killian96ss wrote:Well actually umm no, but I think a few sticks of dynamite would be easier!

Steve

I think my neighbors might get a little upset at that one! Maybe not so much the noise from the dynamite, but maybe they would become a bit preterbed by the ghastly things that might land on their roof and such as a result!!!

S-10CREWCAB.NET

Engine noise solved with tune-up

Engine noise solved with tune-up

Re: Engine noise solved with tune-up

Engine noise *solved with tune-up*

Engine noise *solved with tune-up*

Re: Engine noise *solved with tune-up*

Engine noise solved with tune-up

Engine noise solved with tune-up

Re: Engine noise solved with tune-up