fule pump ?

[Marty Slater]

i have a 1995 SLE GMC Sierra C1500 1/2 ton 2wheel Drive with Air

5.7L throttle body inj with 138,409 miles

i have put some Techron by Chevron fule Inj cleaner in it new plugs an changed fule filter

it seems to have some dead spots in low throttle range

spits an sputters a little climbing a hill some times

died at stop light 2 times starts right up

runs good on high way

problum seams to be in low RPM range

any info or ideas would be great

thank you for your time an help

Marty

 

[Buddy Benedict]

Throttle position sensor is bad. My sons s10 did the same thing and we changed the TPS and all problems went away.

 

[ken stang]

Hi Marty

Are you getting a check engine light? Read the codes in comp. Has the intake gaskets ever been changed? They are made of plastic and are are prone to leak. KENNY

 

[Samuel Hagan JR]

Distributor caps are bad for cross firing on those.

 

[RodneyPierce]

Last I heard, he wasnt getting a CEL.

 

[RodneyPierce]

I recommended plugs, wire, cap and rotor and the injector cleaner.

Looks like he did plugs and fuel filter. Now needs cap and rotor, and wires.

TPS sensor is a likely candidate as well. (didnt think about that one)

 

[Andy Greene]

Yep , TPS is basically a potentimeter - the are know for "dead spots" in the range or poor contact in a certain range- No MIL just means it hasnt set a hard code.... Yet , it will when it fails

 

[Marty Slater]

thank you guys

my weekends filled up now

back to the parts store

will let you know how it is going

thank you again for the help

Marty

 

[Marty Slater]

UPDATE ok got the rottor,cap an wires in yesterday

made a huge differance :wacko: till i figerd out witch 2 wires i had crossed :huh: still the same

2 bloodey nuckels latter an good nights sleep i get to shovell some snow first thing

hope to do the TPS Monday

Thanks guys will keep you updated

Marty

 

[Mark Stein]

Along with TPS the stalling could possibly be the egr valve, I know the V6 vortec had that issue in the 94 -95 models. The EGR picks up crud and stays open. It will do this intermitently. Dont recall having heard this on the V8 but. There was an aftermarket gasket with a stainless screen in it for the V6. may want to pull off the EGR and check the passage for crud while you have the rest of it apart.

 

[Marty Slater]

well got the TPS on today an it took care of it

thank you guys for the help an info

Marty

 

[RodneyPierce]

about time!

 

[Andy Greene]

about time!

Yeeeeep - see post's #2 -- till fixed

If your gonna toss parts - at least let us toss em :lol: :lol: :lol:

 

[Marty Slater]

well i spoke to dam soon it is still doing it :wacko: i should have taken it for a little longer drive

tried to go flying with a buddy an it is still doing it

Hay Rodney that corsair flys pretty fast got it dialed in

Friday sounds pretty nice what time could you be here

we might try flying an mecanicin

will keep an eye on the wether an see what happens

next on the LIST is the EGR valve?

Marty

 

[RodneyPierce]

Marty, friday I have some running around to do, so not sure if Ill be available to do anything or not.

 

[Tim leyde]

Marty, bundle up and just take the Harley! Hope you get it fixed soon.

TL

 

[Tim leyde]

Marty, bundle up and just take the Harley! Hope you get it fixed soon.

TL

 

[RodneyPierce]

Marty doesnt own a Harley :lol: