☰
Find a Shop
|
Search Codes
Search Codes
Ask Your Car Question
Find a Shop
Cars Articles
Cars Technical Articles
Cars Recalls
Cars Common Problems
Cars Safety Rating
Cars MPG
Cars News
2024 Cars MPG
Cars Test Game
For Shop Owners
Login
Remember
Register
Questions
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Why code doesnt tell exactly which cylinder misfiring
0
like
0
dislike
195
views
asked
Oct 3, 2018
by
BOBBY
Changed plugs,A\C delco,correct gap.50,all eight coils bad?
Vehicle:
04 Cadillac deville DTS,300hp 4.9l
check-engine-light-on
problems
diagnostic
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
0
like
0
dislike
answered
Oct 3, 2018
by
Reynaldo
(
13.4k
points)
No you can't have all eight coil bad, unless there is a aftermarket alarm that interrupts the ignition feed circuit, you can have one misfire and due to the induction system can cause fuel to air ratio unbalanced, for a particular cylinder and that would cause another cylinder to misfire and affect another cylinder, certain scan tool have software that can communicate with the vehicles ECM software if you don't have it you have to approach a different way, a CKP ( coil on plug) ignition analyzer, disable a coil at a time and noting the RPM drop,or just clear the code , the cylinder that sets first is usually the cause
Please
log in
or
register
to add a comment.
Related questions
0
like
0
dislike
0
answers
240
views
why would a shop get this code & then tell customer that nothing is wrong?
asked
Sep 23, 2018
by
anonymous
check-engine-light-on
diagnostic
problems
0
like
0
dislike
1
answer
377
views
can a computer code tell why a 2002 Cadilac deville would suddenly lose all gears?
asked
Aug 15, 2018
by
richamol
transmission
problems
diagnostic
0
like
0
dislike
0
answers
121
views
Why is my computer & odometer off
asked
Oct 28, 2018
by
Paul Richard
swr-363
odometer
problems
diagnostic
0
like
0
dislike
1
answer
227
views
No one can identify the source for a Gross Emission Leak code. Passes smog. Any idea's on the cause?
asked
Aug 7, 2018
by
Tony
diagnostic
check-engine-light-on
gross-emission-leak
problems
0
like
0
dislike
1
answer
237
views
truck will not go in Reverse at all all other gears work just fine what can be the problem.?
asked
Feb 25, 2018
by
Austin
transmission
diagnostic
problems
36.2k
questions
32.2k
answers
1.3k
comments
22.8k
users
Need A Repair Shop?
Find local automotive repair shops in your area.
AutoCodes.com Shops
Does your car have
Safety Recalls?
→ Check here
Related Information
-
Car TSB
-
Car Recalls
-
Car Common Problems
-
Car Safety Rating
-
Car Technical Articles
-
OBDII FAQ
-
OBDII Components
-
2024 Cars MPG
All OBDII Codes
-
Top 25 Codes
-
Latest Codes
-
All OBDII Codes
-
Powertrain (P) Codes
-
Network (U) Codes
-
Body (B) Codes
-
Chassis (C) Codes
AutoCodes.com
Engine-Codes.com
Infinitihelp.com
Nissanhelp.com
About AutoCodes.com
Privacy Policy
Terms and Conditions
© 2010-22 AutoCodes.com
...