2002 blazer has tbl starting and staying started. It has been thourly tuned up by reliable mech. also when trying to start it seems to temoparily short out battery

SOURCE: 2002 chevy Blazer hard starting

i agree with the fuel pump problem this is quite common with these trucks. but the fuel injectors on this motor are not accesable without removing the plenun and they are not standard fuel rail injectors so you can not test as earlier instructed.

SOURCE: I Have a 2002 blazer that starts but motor dies, surges when accelerating

If this engine is a VORTEC then you may have a problem with the internal fuel system. Under the top plenum there is a fuel reg and poppet valves that inject fuel into the cylinders. Sometimes the tubes that run fuel from the reg to the valves can leak and cause your problem. This cannot be found with pressure check because this occurrs after the reg. PS fuel mileage will go down. Let me know if this helps.Moe

SOURCE: my 2002 chevy Blazer wont start but the battery is

take a hammer and tap on the starter while someone tries to start it if it cranks put new brushes and bushings in it. also there is a small brass or copper bolt that goes to the solonoid. make sure it's tight and not croaded.

SOURCE: 1988 chevy s10 blazer 4.3, cut out , will srart but will not stay

Your vehicle as an ignition control module located on top of the distributor (under the cap and rotor) I would pull the ICM and take it to NAPA and have it tested if bad replace it (cost about $80). Sounds like a ICM problem or it could be the ignition switch located on the steering coloum which can't be tested but costs $20. Hope this works

joecoolvette

• 5660 Answers
• Posted on Jul 26, 2009

SOURCE: My 2002 chevy suburban will not start.

1.Are the battery terminal ends corroded?
This is a side post battery, and they are notorious for battery acid leaking, out of the battery terminal seal.

Solution: Remove both battery terminals, (Negative {Black} terminal FIRST!) Mix up a solution of two tablespoons of baking soda, to one tall glass of warm water. Wearing protective gloves, (Dish washing gloves?), hold the terminal AWAY from the battery, slowly pour the baking soda/water solution on the terminal.
Work the terminal bolt back, and forth in the terminal end, to ensure the solution gets to all surfaces. The terminal will turn a bright copper color.

When you are satisfied that the terminal is clean, pour water over it to rinse the solution off. Dry the terminal with a paper towel, or suitable throw away cloth.
Clean the terminals on the battery with a wire brush.
Reinstall the battery cables. (Positive terminal FIRST, Negative terminal LAST!)

Throw the gloves away in a sealed plastic sack, wash your hands, and arms thoroughly.

2.Do the headlights come on now?
No? Replace battery cable, or cables.

3.Headlights come on? Suspect the starter drive, starter, and ignition switch.

At this point, it's time to have a competent mechanic look at it.
The mechanic will do a cursory inspection of the starter, and see if removal is necessary, or may want to test the ignition switch with a multimeter.