Question about 2002 Chevrolet Blazer

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I have a 2002 chevy blazer LS with a 4.3 Vortech motor..I recently replaced the fuel pump and added a new battery.All the electricals now work fine,but when i go to turn the truck over-nothing.Not even so much as a click-just dead silence.

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Have your starter checked, the solenoid may have gone bad.

Posted on Sep 12, 2009

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Remove the fuel pump relay and replace it with another relay from a nonessential slot (i.e. wiper relay). Just make sure they are the same first. This will determine if the relay is the issue.

Posted on Sep 12, 2009

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1 Answer

2000 chevy will not start


Check spark. If fuel pressure is approx. 60 it should be doing ok. I believe the low end for vortech motors is around 55 psi.

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My 1995 chevy blazer has set set since 2007 it has a 4.3L v6 vortech motor in it, the it has set for so long is because it had black smoke come out of the exhaust pipe?


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1994 s10 4 by 4 blazer ,eng/ 4.3 v6 with tpi / auto ////// car does run , battery went dead , replaced with a new battery. tried to start the car , it had been sitting for 3 weeks,,....


I'm assuming it won't start now with the new battery..
they do sometimes flood, but not usually unless there's a regulator problem, etc..
but try starting fluid into intake 1st.
If it starts and runs, then proceed..
You'll have to start by checking if the fuel pump is running with key to ON 1st and foremost.
the power to pump.
If so, then check for fuel pressure
then power to spark/coil, etc..
then spark
then other..
even Temp sensor switch...(check wiring diagram in Haynes repair manual)
too much to check from there on if no start still

I'm not an expert, just tryin to help from much experience with Chevys

Sep 30, 2010 | 1994 Chevrolet S-10 Blazer

2 Answers

The fuel pump was not engaging so we replaced it.


the fuel pump doesnt set off the check light recheck the connections at the fuel pump check for power to the connector also check the pump new doesnt mean not defective

Jan 15, 2010 | 2002 Chevrolet Blazer

2 Answers

I have a 1998 Chevy Blazer 4.3 Vortech that will not start.


You may want to check your fuel regulator and check your injectors. Had the same issue with a 96 and replaced the whole CSFI spider assembly with a MFI spider assembly and problem was solved.

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1997 chevy silverado 1500 350 vortech, new fule pump not working


before you drop tank again, check fuses & relay.then disconnect fuel line @ filter turn key to on position should hear fuel pump run and get gas stream out of line. if no flow from line new pump faulty be sure & remove negative battery cable first good luck.

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2002 chevy blazer fuel pump (4 door)


yes you have to drop the tank. you will also need a fuel line tool to unhook the fuel lines. before you drop the tank see if tou can reach and wiggle the electrical connection on the top of the tank. these pumps have a pigtail issue. please rate

Dec 08, 2008 | 2002 Chevrolet Blazer

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Engine swap


95-94-93 4.3 vortec are compatable engines. 97 4.3 will fit but will have problems with sensors and computer

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have the computer checked out. may need reprogramming and have updates added. also check for loose or corroded connections at the terminals.

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