100k mile over the hill?

bravadasvx · 11-03-2009, 01:27 AM

Just hit over 100k miles on my 2000 bravada and now its hurting going up hills. Get check engine light coming on for o2 sensors so i replaced them but everytime on this one hill i drive everyday to work it sets off the light and then i lose power. Some told me that its prob my throttle body? This sound right? Also getting the gas gauge going all over the place anything below 1/2 a tank it just randomly goes all the way to E or to F or just stays where ever. Been setting my trip but its just kinda like wow 100k miles no problems now is it falling apart?

cHUcKs10 · 11-03-2009, 01:34 AM

Time for a full tune up.

When was the last time you've changed plugs, wires, cap, etc...?

nAu HaVoC · 11-03-2009, 01:38 AM

SeaFoam!!

Onimun · 11-03-2009, 02:14 AM

Strange. My Fuel gauge just started doing the same thing...

Good luck.

The Blown Blazer · 11-03-2009, 02:21 AM

It sounds dumb, but try unplugging the MAF and running it. If you feel the power come back, then theres your problem. Happened to my old Blazer right around 100k.

Crew Cab Sonoma · 11-03-2009, 06:44 PM

when was the last time the fuel filter was replaced?

wht974x4 · 11-03-2009, 06:47 PM

id say time for a full tune up, change fuel filter
sea foam only cleans the back 2 cylinders but dont want to get into an argument about that

Shaddix · 11-04-2009, 01:45 AM

Quote: Originally Posted by wht974x4

id say time for a full tune up, change fuel filter
sea foam only cleans the back 2 cylinders but dont want to get into an argument about that

I know you dont want to argue, but how is dumping a can of seafoam down the TBI going to only allow the back cylinders to get wet. Its going down the central throat of all cylinders. Maybe if you sucked it out with a vacuum line??

bravadasvx · 11-04-2009, 07:22 PM

I tryed plugs and wires a couple weeks ago they seemed bad but it wasnt the problem. Someone suggested to me that the throttle body was prob dirty. Would that seafoam stuff clean that?

cHUcKs10 · 11-04-2009, 09:39 PM

Yea, Seafoam would help with that.

You should try changing your cap and rotor next. What's your fuel pressure?

11-03-2009, 01:27 AM	#1
bravadasvx Registered User Age: 28 Join Date: Nov 2009 Posts: 5 Location: User is: OffLine	100k mile over the hill? Just hit over 100k miles on my 2000 bravada and now its hurting going up hills. Get check engine light coming on for o2 sensors so i replaced them but everytime on this one hill i drive everyday to work it sets off the light and then i lose power. Some told me that its prob my throttle body? This sound right? Also getting the gas gauge going all over the place anything below 1/2 a tank it just randomly goes all the way to E or to F or just stays where ever. Been setting my trip but its just kinda like wow 100k miles no problems now is it falling apart?
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11-03-2009, 01:34 AM	#2
cHUcKs10 Registered User Age: 22 Join Date: Nov 2005 Posts: 513 Location: Tallahassee, FL User is: OffLine	Re: 100k mile over the hill? Time for a full tune up. When was the last time you've changed plugs, wires, cap, etc...?
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11-03-2009, 01:38 AM	#3
nAu HaVoC Blazin 4Dr Age: 23 Join Date: Sep 2005 Posts: 294 Location: Prescott, AZ User is: OffLine	Re: 100k mile over the hill? SeaFoam!!
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11-03-2009, 02:14 AM	#4
Onimun Mr. Sparkle Age: 20 Join Date: Sep 2006 Posts: 8,289 Location: Kow-a-fo-knee-uh User is: OffLine	Re: 100k mile over the hill? Strange. My Fuel gauge just started doing the same thing... Good luck.
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11-03-2009, 02:21 AM	#5
The Blown Blazer Registered User Join Date: Aug 2004 Posts: 3,118 Location: User is: OffLine	Re: 100k mile over the hill? It sounds dumb, but try unplugging the MAF and running it. If you feel the power come back, then theres your problem. Happened to my old Blazer right around 100k.
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11-03-2009, 06:44 PM	#6
Crew Cab Sonoma not low, not gonna be... Age: 43 Join Date: Mar 2004 Posts: 4,842 Location: Chattanooga, TN User is: OffLine	Re: 100k mile over the hill? when was the last time the fuel filter was replaced?
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11-03-2009, 06:47 PM	#7
wht974x4 Registered User Join Date: Nov 2009 Posts: 11 Location: User is: OffLine	Re: 100k mile over the hill? id say time for a full tune up, change fuel filter sea foam only cleans the back 2 cylinders but dont want to get into an argument about that
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11-04-2009, 01:45 AM	#8
Shaddix Registered User Join Date: Apr 2003 Posts: 148 Location: Astoria, Oregon User is: OffLine	Re: 100k mile over the hill? Quote: Originally Posted by wht974x4 id say time for a full tune up, change fuel filter sea foam only cleans the back 2 cylinders but dont want to get into an argument about that I know you dont want to argue, but how is dumping a can of seafoam down the TBI going to only allow the back cylinders to get wet. Its going down the central throat of all cylinders. Maybe if you sucked it out with a vacuum line??
	[Reply w/Quote]

11-04-2009, 07:22 PM	#9
bravadasvx Registered User Age: 28 Join Date: Nov 2009 Posts: 5 Location: User is: OffLine	Re: 100k mile over the hill? I tryed plugs and wires a couple weeks ago they seemed bad but it wasnt the problem. Someone suggested to me that the throttle body was prob dirty. Would that seafoam stuff clean that?
	[Reply w/Quote]

11-04-2009, 09:39 PM	#10
cHUcKs10 Registered User Age: 22 Join Date: Nov 2005 Posts: 513 Location: Tallahassee, FL User is: OffLine	Re: 100k mile over the hill? Yea, Seafoam would help with that. You should try changing your cap and rotor next. What's your fuel pressure?
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