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Why is my 91 s10 sound make a noise like a vaccum leak when i pus the gas

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Need to check for cracks in vacuum lines

Posted on Apr 16, 2014


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If it doesn' t effect engine performance when you plug it, do exactly that... plug it.

Posted on May 25, 2009

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I get a whistling noise i think is coming from throttle body

Your whistling is quite possibly a vacuumn hose leak on the passenger's side, top of the engine. Look closely at the hose connections coming from the PCV. Small holes can develop in these vacuum line connections, and you will experience a rough idle, as well as the "whistling" noises.

Jul 06, 2014 | 1999 Ford Explorer

1 Answer

I have a 91 s10 the gas tank is rusted badly and fuel pump is bad I also have a 96 s10 that runs buut bottom end is knocking so I want to take the tank with the pump in it out of 96 and put it in the 91...

The '96 pump will not work with TBI, so no, that wouldn't work. If the tank mounting is the same, and the hole for the pump is the same, you might be able to use the tank, and then buy a pump for your '91. Or look for a gas tank from salvage.

Jan 12, 2014 | Cars & Trucks

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I have a1994 chevy blazer s10 6 cylinder 4.3. My problem is although I let the car warm up for like 10 minutes in the morning when I start to drive and manage to go a few feet the car wants to stall on me,...

sounds like it could be a vacuum leak, check all of your vaccum hoses, by running your hand over them , while engine is running, but stay away from fan area, if the vaccum line has a hole in them or leaking , you should be able to feel it, also , i have sprayed a light mist of wd40 on them, but not too much, don't want it messy. also check the vacuum hose that runs from brake booster to manifold.

Feb 13, 2011 | Chevrolet Blazer Cars & Trucks

1 Answer

My 1995 camry idles at 15000 rpm should it be lower to reduse gas consumsion

Sounds like you have a vaccum leak. Open the hood and listen by the engine for a hissing noise.

Jan 11, 2011 | 1995 Toyota Camry

2 Answers


My 93 s10 blazer idles really ruff and i
erratically for the first few minutes until it warms up. It now sound like its going to stall every morning I start it up and black soot comes out the tail pipe onto the pavement but only while its idling rough. After i changed the cap and rotor it idled good for a couple days then started doing it again.Already changed the fuel filter and pcv valve. whats the problem?

Dec 28, 2010 | 1993 Chevrolet S-10 Blazer

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Service engine light stays on code p0440 comes up have replaced gas cap light came back on where are the sensers loacted as well as the evaporative emission canister as well a diagram for hose routing

Evap cannister is located next gas tank . Sounds like vaccum leak problem with engine running open hood and listen for hissing noise in vaccum lines also crawl uder vehicle near gas tank and listen most of the time leak can be located like this.

Aug 02, 2009 | 2000 Chevrolet Blazer

2 Answers

1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Jul 19, 2009 | 1987 Chevrolet S-10 Pickup

1 Answer


If it doesn' t effect engine performance when you plug it, do exactly that... plug it.

May 25, 2009 | 1991 Chevrolet S-10 Blazer

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