Erratic cranking and backfire during start attempt

Asked by Nov 06, 2016 at 10:19 PM about the 1984 Buick Grand National

Question type: Maintenance & Repair

Have a GN 1984 where the wiring harness
was completely cut going to the module.
The wiring has been finally sorted out but
has a very erratic crank like over advanced
ignition timing. Cam sensor is synced
properly. Balancer appears to be OK not
cracked. New module also in place. Firing
order etc OK as well. Thanks for any help!
Mark

2 Answers

2,490

Sound like the timing is off....check it with a timing light and you may have crossed some wires or there are other problems

10

I had a problem like this in my 85 and found out that the wires to my fuel injection have been burned or if they're short and had to be rewired and stopped all the problems and it actually happened after I had washed the car and the temperature had went down low and when I started it again I had the problem

Your Answer:

Buick Grand National Experts

  • #1
    kenet12
    Reputation
    150
  • #2
    Joey Warren
    Reputation
    140
  • #3
    spideybee
    Reputation
    100
View All

Related Models For Sale

Used Buick Regal
84 Great Deals out of 3,672 listings starting at $1,995
Used Chevrolet Monte Carlo
4 Great Deals out of 978 listings starting at $1,125

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.