Update on the piso - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Low87 · 10-10-2003, 12:01 PM

I went out and got a temp sensor, and O2 sensor, and a fuel filter this morning. I replaced the temp sensor and went to replace the O2 sensor when I realized I don't have one! I forgot it was located on the exhaust pipe, I guess when I had my exhaust done 6-7 years ago that got yanked. I can't do the fuel filter until later. I pulled the air cleaner off, got the truck started long enough to run around and look at the injectors. There is fuel getting to the TBI (so no sending unit, pump, or filter problems) and the spray pattern looks good. But once again (actually, 4 times again) the truck starts then dies. Any other suggestions would be greatly, greatly appreciated!

*1FaastC10* · 10-10-2003, 05:38 PM

could be related to that o2 sensor? or lack thereof?

Low87 · 10-10-2003, 05:39 PM

After 7 years?

toytruck · 10-10-2003, 05:43 PM

Ok, your getting somewhere now. You need to get that O2 sensor hooked up. Go to the auto store and in the HELP section you will find those spark plug anti-foullers. One of those will be them same threads as your O2 sensor (14mm or 18mm). Cut the end off so you just have the threaded part and get it welded into your pipe so you can get the O2 sensor back in there. Any time you make a change you should unhook the battery so the computer can relearn the new changes.

Low87 · 10-10-2003, 05:52 PM

I'll try it, but I really need to get the truck running to get it to the shop to have welding done. I find it hard to beleive that the problem lies in something that was removed 7 years ago. Doesn't the computer go bad sometimes?

**swervin ervin** · 10-10-2003, 06:00 PM

Greg,

it's real hard to diagnois problems with these TBI pieces of crap. I replaced everything on my van before I finally got it to run right. It's messing up again now. I think the EGR I put on it has went south. It was a replacement from Advance, the generic type. The van is skipping at idle and I can smell exhaust. Not raw fuel but like the kind you smell from the EGR. I think the EGR is staying open at idle. I'm going to stick the old one back on to check it.

Yours could be anything and these parts are not cheap. So just replacing everything until it gets fixed is costly. I hate to say what is wrong with your truck. Maybe the IAC valve. Who knows. And yes, the computer do go bad.

Low87 · 10-10-2003, 06:04 PM

Thanks for the bad news Mike!

All I have to say right now is, this sucks! Should I break down and just take it to a mechanic? Would they have better luck than us?

**swervin ervin** · 10-10-2003, 06:51 PM

It sure sounds like the IAC (idle air control) valve, but it could be anything. But, even the cheap GP Sorensen ones from Advance are 30 bucks. I can send you my old one that I'm sure doesn't have anything wrong with it just to check if you like. It would be on my dime.

On a brighter note, I sure hate to keep telling about my good fortune, but I went out a few minutes ago to swap out my EGR. Instead I found why my van was skipping. Are you ready for this? A vacuum hose was torn and had come off.

Sorry Greg. Not rubbing it in. Just real glad my luck has changed for the better. I thought the only kind of luck I had left was all bad.

Let me know on the IAC valve and I'll get it packed and send it to you in the morning.

Low87 · 10-10-2003, 10:07 PM

Thanks a million Mike! I sent you a pm with my address.

LOHRTBT · 10-11-2003, 11:40 AM

Greg, I totally forgot you are Fuel INjected. Damn!! lol

Low87 · 10-11-2003, 08:23 PM

Quote:

Originally posted by LOHRTBT
Greg, I totally forgot you are Fuel INjected. Damn!! lol

I don't have brushed billet interior trim either fool!

10-10-2003, 12:01 PM	#1
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	Update on the piso I went out and got a temp sensor, and O2 sensor, and a fuel filter this morning. I replaced the temp sensor and went to replace the O2 sensor when I realized I don't have one! I forgot it was located on the exhaust pipe, I guess when I had my exhaust done 6-7 years ago that got yanked. I can't do the fuel filter until later. I pulled the air cleaner off, got the truck started long enough to run around and look at the injectors. There is fuel getting to the TBI (so no sending unit, pump, or filter problems) and the spray pattern looks good. But once again (actually, 4 times again) the truck starts then dies. Any other suggestions would be greatly, greatly appreciated! __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin

10-10-2003, 05:39 PM	#3
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	After 7 years? __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin

10-10-2003, 05:43 PM	#4
toytruck 5-7 dropped 87 CC Dually Join Date: Sep 2003 Location: bay city mi Posts: 326	Ok, your getting somewhere now. You need to get that O2 sensor hooked up. Go to the auto store and in the HELP section you will find those spark plug anti-foullers. One of those will be them same threads as your O2 sensor (14mm or 18mm). Cut the end off so you just have the threaded part and get it welded into your pipe so you can get the O2 sensor back in there. Any time you make a change you should unhook the battery so the computer can relearn the new changes. __________________ I rather be in my 77 Sanger Picklefork Jet Hydro!

10-10-2003, 05:52 PM	#5
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	I'll try it, but I really need to get the truck running to get it to the shop to have welding done. I find it hard to beleive that the problem lies in something that was removed 7 years ago. Doesn't the computer go bad sometimes? __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin

10-10-2003, 06:00 PM	#6
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Greg, it's real hard to diagnois problems with these TBI pieces of crap. I replaced everything on my van before I finally got it to run right. It's messing up again now. I think the EGR I put on it has went south. It was a replacement from Advance, the generic type. The van is skipping at idle and I can smell exhaust. Not raw fuel but like the kind you smell from the EGR. I think the EGR is staying open at idle. I'm going to stick the old one back on to check it. Yours could be anything and these parts are not cheap. So just replacing everything until it gets fixed is costly. I hate to say what is wrong with your truck. Maybe the IAC valve. Who knows. And yes, the computer do go bad. __________________ Mike 1985 Chevy C-10

10-10-2003, 05:38 PM	#2
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	could be related to that o2 sensor? or lack thereof?

10-10-2003, 06:04 PM	#7
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	Thanks for the bad news Mike! All I have to say right now is, this sucks! Should I break down and just take it to a mechanic? Would they have better luck than us? __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin

10-10-2003, 06:51 PM	#8
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	It sure sounds like the IAC (idle air control) valve, but it could be anything. But, even the cheap GP Sorensen ones from Advance are 30 bucks. I can send you my old one that I'm sure doesn't have anything wrong with it just to check if you like. It would be on my dime. On a brighter note, I sure hate to keep telling about my good fortune, but I went out a few minutes ago to swap out my EGR. Instead I found why my van was skipping. Are you ready for this? A vacuum hose was torn and had come off. Sorry Greg. Not rubbing it in. Just real glad my luck has changed for the better. I thought the only kind of luck I had left was all bad. Let me know on the IAC valve and I'll get it packed and send it to you in the morning.

10-10-2003, 10:07 PM	#9
Low87 been here longer than Liz Join Date: Feb 2000 Location: Broken Arrow, OK Posts: 2,437	Thanks a million Mike! I sent you a pm with my address. __________________ ~Greg~ Mac's Garage '87 SWB 6/8 drop "Piso" '08 CCSB Silverado DD the departed '89 GMC K5 Jimmy 4x4 "Rusty Nuts" '77 Chevy K5 Blazer 2wd '83 Chevy stepside "You get what you pay for" - Mike 'swervin ervin' Ervin

10-11-2003, 11:40 AM	#10
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	Greg, I totally forgot you are Fuel INjected. Damn!! lol __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84



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