I have a 1998 Chevy with 5.7 Vortex (centralSFI)fuel system. Code p1345
Crankshaft/camshaft correlation keeps comming up have changed both sensors
and disconnected battery a couple times to reset service light. NYS
emissions scaner says p1345 and both banks running too rich,and FAILED.
It was hard start when warm may have cured that with new fuel pump or new
plugs. Appreciate any help, Thanks, jo
First, did you attempt the inspection with the lite on, what were the codes
for too rich, you should get this on a scanner and look at the crank sensor
inputs to the pcm, also many scanners have a troubleshooter for the codes,
when and if you fix this, (this may not be something you can do without
thorough diagnostics) clearing the codes will require a prescibed drive
cycle to reset the emissions monitors or it will fail again. Also that
problem code could cause hard starting with an sfi engine.
After replacing the cam and crank sensors I did have codes read with a
cheap scanner (Auto Zone) still only got p1345 code. But I did not drive
it much as you are suggesting so far only maybe three short runs. I will
do some more miles this weekend. Sad part is the truck is 6600 GVW and my
understanding is it does not need a emmissions inspection I just can't
convince the inspection station of that, but then again the ck engine
light is still on. Thanks for the help I will post more developments as
they come in.
OK well I saw a letter to a dealer saying the old law was 6000# and the new
law will be higher for 2000 and even higher for 2004 year models, but it
was a letter from the state and you may still be right about that. Thanks
I'll try to find the actual inspection law. Thanks again
Ian, Can you elaborate on that a bit. Will a "Snap On" scanner give me that
info and what type of reading am I looking for? Maybe it is time to head to
the dealer? also maybe the fact I have 160,000 miles should have been
mentioned. Thanks for the help
Yes....a scanner will tell you what the offset is. It will read in
degrees..+ or -. You need to be at 0 degrees or very close
to it. All that code is saying is that your cam sensor (what looks
like the distributor) is not in phase with the crank sensor. You
adjust this the same way you used to adjust distributor timing,
loosen the dist clamp and rotate it until you achieve 0 degrees.
Great I had a feeling that was it. The guys that changed intake gaskets
told me the dist. may not be in quite right. I pulled the cap and set up
the engine for #1TDC and liked where they dropped it (gear wise), But my
book says towers should point perpendicular to block so I gave it a twist.
Disconnected then reconnected battery. The light went out for a moment and
then came back on. I need to check the code to be sure I'm still on the
same problem. Would the scanner show adjustment change as we move the
dist. with engine running? The scanner I'm think of is about a $6000 Snap
On that my garage has. I think he just hasn't mastered it yet. Thanks
I know that our Tech 2 shows adjustment change while doing it.
You will just have to try it out and see what happens.
Too bad about the guys that changed your intake gasket. Did you
pay them money? If so, they should be the ones getting your dist
back to the correct position....it's all part of doing the job correctly.
Had a GM mechanic set the timming at the dealership with the Tech II and he
got the light off. Was real happy with that for about 8 miles. Light is
back on for unknown reason. Now I guess it's bach to the shop for another
scann. On the plus side it is a nice looking money pit. Light came on when
I got too happy and got on the gas a bit hard. It has 4 new injectors,
could I need 4 more?
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.