96 VDP P0300/P0302/P1313. What to try next?
#1
07-26-2016, 11:55 PM
96 VDP P0300/P0302/P1313. What to try next?
My 96 USA VDP had these codes (and no others), and still gets them after Ive tried a number of things, and cleared codes:
Symptoms (besides the recurring codes):
What should I try next?
Thanks,
George
P0300 Random misfire detected.
P0302 Misfire detected cylinder 2.
P1313 Catalyst damage misfire detected cyl 1, 2, 3 (Bank A)
I understand that possible causes for all these are: P0302 Misfire detected cylinder 2.
P1313 Catalyst damage misfire detected cyl 1, 2, 3 (Bank A)
Fuel contaminated.
Fuel injector blocked or leaking.
Ignition secondary circuit breakdown (coils, spark plugs).
Fuel pressure low.
Cylinder compression low.
Broken valve spring(s).
Heres what Ive done so far, without improvement: Fuel injector blocked or leaking.
Ignition secondary circuit breakdown (coils, spark plugs).
Fuel pressure low.
Cylinder compression low.
Broken valve spring(s).
Inspected old spark plugs. Nothing unusual.
Installed new spark plugs.
Got a new coil and cycled it through all six positions.
Removed fuel injectors and had them rebuilt by Mr. Injector.
Compression check (I didnt record the values, but nothing seemed way off, nor were any two adjacent cylinders low).
Bought a fuel filter (but couldnt get the old one out, even with the special tools. Could have a pro install it. But doesnt seem like it would affect one bank only.)
Installed new spark plugs.
Got a new coil and cycled it through all six positions.
Removed fuel injectors and had them rebuilt by Mr. Injector.
Compression check (I didnt record the values, but nothing seemed way off, nor were any two adjacent cylinders low).
Bought a fuel filter (but couldnt get the old one out, even with the special tools. Could have a pro install it. But doesnt seem like it would affect one bank only.)
Symptoms (besides the recurring codes):
Rough idle (consistent with missing).
Some slight surging and hesitating at freeway speed.
Some slight lack of smoothness when accelerating from idle.
Any ideas? Some slight surging and hesitating at freeway speed.
Some slight lack of smoothness when accelerating from idle.
What should I try next?
Thanks,
George
#2
07-27-2016, 02:07 AM
a) check wiring to each coil (continuity, voltage, etc)
b) clean throttle body
c) load test battery and check voltage to under-hood locations
d) check ground straps and ground points
e) check for coil(s) shorting (arcing) to valve cover
f) validate CKPS or simply replace if it's seeing its age
g) check fuel pressure
h) check connectors (clean?) at sensors and modules
b) clean throttle body
c) load test battery and check voltage to under-hood locations
d) check ground straps and ground points
e) check for coil(s) shorting (arcing) to valve cover
f) validate CKPS or simply replace if it's seeing its age
g) check fuel pressure
h) check connectors (clean?) at sensors and modules
Last edited by caldercay; 07-27-2016 at 02:10 AM.
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gbmtkj (07-27-2016)
#3
07-27-2016, 10:53 AM
