Question about 1994 Chevrolet S-10 Blazer

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My blazer 94 v6 vortec is wasting WAY too much gas yes the gas pump is failing does that have alot to do with my problem???

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Make sure you dont just need a tune-up. i had a vehicle just a while ago sucking lots of gas. took a guess and replaced primary o2 sensers and bingo. more zip and way better fuel economy. there were no codes showing either.

Posted on Mar 04, 2013

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No, a weak fuel pump would starve the engine for fuel, causing better fuel mileage. If the engine hasn't had a tune up in years, you might want to consider it. A clean air filter helps, proper tire inflation helps, making sure you don't have a brake drag helps, proper alignment helps, keeping the rpm's under 3000 helps, hope this helps, Gary

Posted on Jul 28, 2010

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Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did


what did you do (replace it) if you still have a miss you may need to tune it up / make sure the fuel pump you bought is for the right psi for your blazer

Mar 27, 2013 | 1998 Chevrolet Blazer

1 Answer

94 4DR CHEVY TRUCK BLAZER S-10 4.3L V6 ENGINE NEED TO KNOW THE RIGHT MODEL/NAME OF GAS PUMP MY TRUCK USES PLEASE ! ? !


when ordering fuel pump, need to know the vin letter w or z. one is for a carb and the other is for a injection or vortec engine. one puts out 11psi and the other puts out 60psi. is this an in tank fuel pump?

Nov 12, 2010 | 1994 Chevrolet S-10 Blazer

2 Answers

94 Blazer, 4.3L Vortec Engin runs fine for a


Could be a fuel issue, Start by changing the fuel filter, if that doesnt work you might want to drop the gas tank and check the strainer on the fuel pump and make sure the tank is clean.

Jan 20, 2010 | Chevrolet Blazer Cars & Trucks

1 Answer

'94 S 10 Blazer V6 Vortec EFI. Fuel pressure good, new fuel injectors installed, fuel pump works ok. Only starts with starter fluid sprayed into air intake. Any Suggestions?


your statement is fuel pump work ok, have you tested for proper fuel pressure. just because the fuel pump works it could have less pressure needed to start the engine. maybe the fuel filter is plugged. start out by replacing the fuel filter, if this doesn't fix it, you need to pressure test the pump. even 10 psi reduction in pressure will allow the engine not to start.

Nov 03, 2009 | 1994 Chevrolet S-10 Blazer

3 Answers

I have a chevy blazer 94 S10 still quit on the road.


How is it running before it quits onyou. This could be the culprit of an egr valve. How many miles on thevehicle. The egr seems to die on a certain mileage pattern. Also youcould start by cleaning the egr valve before replacing it. This couldvery well help the situation, but this is just a guess. Hope thishelps!!

Apr 30, 2009 | 1994 Chevrolet S-10 Blazer

1 Answer

Wont start when its cold


It sounds to me like you have a bad fuel pump.Not that uncomon where i live.Also when you do the fuel pump make sure you replace the pump pick up strainer and fuel filter.

Mar 03, 2009 | 1993 Chevrolet S-10 Blazer

1 Answer

94 blazer vortec 4.3 idle revs up and dont come down


check your Throttle Positioning sensor that should fix your rough idle the TPS controls the breather on the front of the engine its affixed to the right hand side of the throttle body just infront of the spyder on the V6 Vortec 4.3L Models

Nov 09, 2008 | 1994 Chevrolet S-10 Blazer

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