advanced ignition

Asked by Jun 09, 2017 at 03:37 AM about the 1996 Chevrolet Astro Passenger Van Extended

Question type: Maintenance & Repair

hi, i have a problem with my 4.3 vortec engine. the distributor is properly
installed, but im having a problem with the advancing of the ignition. when it
idles it is telling me that its at -20 degrees. when i start driving it, it go's to -30
at times even -35 and it stays there no matter wat i do. it only go's back to -20
when i completely stop the car. i have tried literally everything and can't find it.
maybe you can give me some advice about this. ;)

4 Answers

73,765

Where you having a problem with the engine? The timing does do this.

2,245

those numbers seem way high to me , you know the distributor shaft rotated when the gears meshed on the cam ?, I think the timing is set by the computer , distributor still needs to be in the correct position .

My ignition is properly installed. I did it the gm way. Tdc then put the dimple on de factory mark en slide it in as de distributor needs to be sitting with the clamp on it. I did this many times over and i always end up on my 6 mark. Is there a sensor that could fail without trowing a code? It's someting that has to do with ignition because it misfires, no acceleration. I put new o2 sensor in there i changed rhe timing, i lookt at my wirring and i checked my sensors, i also checked my timingchain, the whole 9 yards. Everyting i checked was fine. Im stuck with this problem for some time now and im really desperate. Thanks for your comment, i apreciate the help. Grtz!

73,765

Double check the spark plug wires for proper firing order, if it is not right that would cause a miss. Otherwise other things to check are Faulty spark plug (s), Faulty ignition coil (s), Clogged or faulty fuel injector (s), Intake air leak Fuel, injectors harness is open or shorted, Fuel Injectors circuit poor electrical connection, Ignition coils harness is open or shorted, Ignition coils circuit poor electrical connection, Insufficient cylinders compression, Incorrect fuel pressure...Start by checking for intake leaks, intake gaskets are common caused of multi-cylinder misfiring. If no leak are found the next step is to replace the spark plugs. If the problem persists more tests needs to be done to diagnose problem.

Your Answer

Astro

Looking for a Used Astro in your area?

CarGurus has 247 nationwide Astro listings starting at $995.

ZIP:

Chevrolet Astro Experts

  • #1
    celica_gt_pimp
    Reputation
    340
  • #2
    Tom Demyan
    Reputation
    320
  • #3
    John Saffrahn
    Reputation
    280
View All

Related Models For Sale

Used Chevrolet Astro Cargo Van
140 listings starting at $2,250
Used GMC Safari
98 listings starting at $1,995
Used Chevrolet Express
66 Great Deals out of 5,006 listings starting at $3,495
Used Chevrolet Tahoe
652 Great Deals out of 39,508 listings starting at $1,000
Used GMC Savana
4 Great Deals out of 1,173 listings starting at $4,950
Used Toyota Tacoma
624 Great Deals out of 42,906 listings starting at $1,500
Used Honda Odyssey
336 Great Deals out of 24,152 listings starting at $950
Used Chevrolet Suburban
345 Great Deals out of 21,844 listings starting at $1,999
Used Ford F-150
2,318 Great Deals out of 183,061 listings starting at $1,000

Used Cars For Sale

2005 Chevrolet Astro For Sale
20 listings starting at $995
2004 Chevrolet Astro For Sale
24 listings starting at $1,500
2003 Chevrolet Astro For Sale
43 listings starting at $2,999
2001 Chevrolet Astro For Sale
16 listings starting at $3,800

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.