2001 suburban starting issues - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckdude239** · 06-08-2010, 04:59 PM

Could also be a fuel pump going bad

p_rubottom · 06-08-2010, 09:16 PM

Quote:

Originally Posted by truckdude239

Could also be a fuel pump going bad

Thats what i was just thinking. I pulled the left bank o2 censer and disconnected the electrical but i still had the shuttering as the rpm's climbed. I might grab a fuel pressure gauge before i take it to the shop Thursday to check that too.

p_rubottom · 06-09-2010, 09:37 PM

I replaced the fuel reg valve ($50 at autozone) and checked the fuel pressure key on engine off it hit about 55 then died back to about 10... I'm going to replace the fuel pump.

p_rubottom · 06-12-2010, 10:01 PM

Alright guys so i figured out the problem today. When I replaced the plugs and wires I bought the E3 spark plugs. Thought they were suppose to be the most "efficient" plugs available.... Well after the fuel press reg, fuel filter, fuel pump i bought AC Delco plugs just to see if thats what it was, and its was!!!! On the plus side i have all new fuel components due to when i read the pressure it was low and not holding 55+ psi. But has anyone used these E3 plugs? I don't know what the deal was but the burb did not like em! Thanks for the help again guys.

clinebarger · 06-12-2010, 10:42 PM

Quote:

Originally Posted by p_rubottom

Alright guys so i figured out the problem today. When I replaced the plugs and wires I bought the E3 spark plugs. Thought they were suppose to be the most "efficient" plugs available.... Well after the fuel press reg, fuel filter, fuel pump i bought AC Delco plugs just to see if thats what it was, and its was!!!! On the plus side i have all new fuel components due to when i read the pressure it was low and not holding 55+ psi. But has anyone used these E3 plugs? I don't know what the deal was but the burb did not like em! Thanks for the help again guys.

They have a new sales gimic spark plug? Will they ever give up on that

Remember the Splitfires & Bocsh platnium+4, & +2s, What a joke!

After you installed the fuel pump it was still hard to start? Or the plugs fixed everything? Or just the misfires?

**bwood** · 06-13-2010, 12:11 AM

I have always had the best performance with the stock AC plugs. I'm with Cline on the "gimic" value of the E3, Bosch stuff. If they were that great, the OEM would have incorporated a similar design to begin with. Honestly Bosch is about as cheap as they get. When I sold them at Oreilly's, they were the cheapest regular platinum we sold.

p_rubottom · 06-13-2010, 10:29 AM

Quote:

Originally Posted by clinebarger

They have a new sales gimic spark plug? Will they ever give up on that

Remember the Splitfires & Bocsh platnium+4, & +2s, What a joke!

After you installed the fuel pump it was still hard to start? Or the plugs fixed everything? Or just the misfires?

The pump fixed the start delay so it starts up on the first hit of the key and the delco plugs fixed the rough idle/accelerating.

06-08-2010, 04:59 PM	#1
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: 2001 suburban starting issues Could also be a fuel pump going bad __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

06-09-2010, 09:37 PM	#3
p_rubottom Registered User Join Date: Aug 2007 Location: Kansas Posts: 366	Re: 2001 suburban starting issues I replaced the fuel reg valve ($50 at autozone) and checked the fuel pressure key on engine off it hit about 55 then died back to about 10... I'm going to replace the fuel pump.

06-12-2010, 10:01 PM	#4
p_rubottom Registered User Join Date: Aug 2007 Location: Kansas Posts: 366	Re: 2001 suburban starting issues Alright guys so i figured out the problem today. When I replaced the plugs and wires I bought the E3 spark plugs. Thought they were suppose to be the most "efficient" plugs available.... Well after the fuel press reg, fuel filter, fuel pump i bought AC Delco plugs just to see if thats what it was, and its was!!!! On the plus side i have all new fuel components due to when i read the pressure it was low and not holding 55+ psi. But has anyone used these E3 plugs? I don't know what the deal was but the burb did not like em! Thanks for the help again guys.

06-13-2010, 12:11 AM	#6
bwood Registered User Join Date: Jan 2003 Location: Denison, Texas Posts: 1,919	Re: 2001 suburban starting issues I have always had the best performance with the stock AC plugs. I'm with Cline on the "gimic" value of the E3, Bosch stuff. If they were that great, the OEM would have incorporated a similar design to begin with. Honestly Bosch is about as cheap as they get. When I sold them at Oreilly's, they were the cheapest regular platinum we sold. __________________ 1998 GMC Sierra SLE 1/2 ton 2WD 305 Vortec -Gibson Stainless Cat Back Swept Side -SS Wheels 2005 Honda CRF250R 2006 Honda CRF150F



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