After replacing alternator, engine cranks but won't catch.

scosby
0

Asked by scosby Nov 30, 2012 at 05:36 PM about the 2003 Chevrolet TrailBlazer

Question type: Maintenance & Repair

Alternator went out & my husband replaced it.  Now when you try to start it, it sounds like it would if it were out of gas.  It won't start.  What could have gone wrong?

1 Answer

John Saffrahn
19,725

Have you tried jumping it? The engine requires approximately 9.5- 10 volts to crank depending on the battery and engine size. The computer requires an additional 1- 1.5 volts. A battery can have enough voltage to crank but have nothing left for the computer to run. The bad alternator could have left the battery in that charge where it seems ok but isn't.

Your Answer

Add photo

Related Questions

  • traction lights come on/check engine light always on. car feels like it sways sometimes on the road. 1 answer

    we drove 8,200 miles to alaska. the last 2k miles were awful. mostly dirt and full of pot holes. we had to catch a ferry ride and then the problems began. once we got off the ferry the check engine li...

    2007 Chevrolet TrailBlazer LS

    -

    Maintenance & Repair

  • 05 cavalier wont catch 6 answers

    my car wont catch.. everyone said it was the fuel pump, I replaced the fuel pump and filter and it still wont catch... yesterday i sprayed some started fluid in the throttle, it cranked but when it tu...

    2005 Chevrolet Cavalier

    -

    Maintenance & Repair

  • 96 Chevy S10 Blazer with 4.3 L engine vortex will turn over but won't start. Why? 58 answers

    The RPM's fluttered and it died. The PCM code read that it was the crankshaft sensor. We have checked the following: coil - replaced fuses - good control module (ecm) - replaced plug wires - replaced...

    1996 Chevrolet Blazer 4 Dr LS 4WD SUV

    -

    Maintenance & Repair

  • My 98 k1500 will start when it's cold, but not after it has been driven 4 answers

    After the truck has been driven it won't restart when you turn the key. Starter is working, but the engine won't catch. Has a new battery & starter

    1998 Chevrolet C/K 1500 Ext. Cab 6.5-ft. Bed 4WD

    -

    Maintenance & Repair

  • Why won't it start???? 6 answers

    I have a 2001Chevy Blazer with the 4.3 Liter V6 Vortec engine. Last Thursday the car stopped accelerating but was still running, then died completely. The battery light came on as soon as it had stopp...

    2001 Chevrolet Blazer 4 Dr LT SUV

    -

    Maintenance & Repair

Search Chevrolet TrailBlazer Questions

Chevrolet TrailBlazer Experts

#1 dandyoun
dandyoun
Reputation 350
#2 lightGear
lightGear
Reputation 210
#2 Tom Demyan
Tom Demyan
Reputation 210
View All

Related Models For Sale

Used Toyota 4Runner"
246 Great Deals out of 9,425 listings starting at $2,500
Used Ford Explorer"
780 Great Deals out of 46,052 listings starting at $999
Used Mitsubishi Endeavor"
25 Great Deals out of 577 listings starting at $2,990

Used Cars For Sale

2002 Chevrolet TrailBlazer For Sale
8 Great Deals out of 481 listings starting at $2,000
2003 Chevrolet TrailBlazer For Sale
15 Great Deals out of 436 listings starting at $2,888
2004 Chevrolet TrailBlazer For Sale
13 Great Deals out of 571 listings starting at $3,000
2005 Chevrolet TrailBlazer For Sale
26 Great Deals out of 619 listings starting at $2,999
2006 Chevrolet TrailBlazer For Sale
26 Great Deals out of 722 listings starting at $2,998