SPONSORED LINKS

Engine will not start, no spark

Tiny
BUBBACOOPE
  • MEMBER
  • 1991 CHEVROLET SUBURBAN
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 11,000 MILES
Replaced coil ran fine start stop restarted all day. Next morning wouldn't start no spark. Replaced coil again started fine next morning same issue! No clue what's happening. Any thoughts?
Tuesday, September 3rd, 2019 AT 6:48 AM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Sounds like the module is bad and also failing the coil as well.

This time, change the module in the distributor and the module at the same time.

The module is demanding max coil output. Most could not take that for a long time.

Roy
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Wednesday, September 4th, 2019 AT 5:25 AM
Tiny
BUBBACOOPE
  • MEMBER
  • 3 POSTS
Did just that and stated right but now idle is a little rough in gear?
Was this
answer
helpful?
Yes
No
Wednesday, September 4th, 2019 AT 12:03 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, drive it for a little bit and see if it straightens out and keeps running. Stay close in case it shuts off.

https://www.2carpros.com/articles/engine-surges

Roy
Was this
answer
helpful?
Yes
No
+1
Wednesday, September 4th, 2019 AT 12:12 PM
Tiny
BUBBACOOPE
  • MEMBER
  • 3 POSTS
Started right up this morning still idling rough.
Was this
answer
helpful?
Yes
No
Wednesday, September 4th, 2019 AT 4:43 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
That is a different issue from the no spark issue.

Check the plugs, wires and look for any vacuum leaks.

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, September 4th, 2019 AT 4:54 PM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links