My Turck dies Sudently

[OldSkool69]

Dudes,

Yesterday I just Checked vacum leaks at the inyectors, none found!!!!
Checked for Exhaust Leaks and found one in the header joint with the rest of the tube to the back, small but could hit crazy the O2 of that side as Allen told me.

Changed from new AC Platnium Stock Plugs to the Champion RC9YC gapped at 0.35"

Went last night to a dinner meeting, and comming out form that in a red light mi car suddently died!!!!!

I Said WTF.

I tow it to my mother in law house an left it there.

The problem is weird cause if I leaft the truck sit still and cold for 15-20 min it starts great and idles for abou 5 min and the dies again.

I change all the Relays I could found but the same thing.

Have Fuel presure around 56psi and with some hearing and ca detect the 2 pumps working well.

But I have no Spark at the Spark Cable on none of the Coils!!!!!!!!! !

Test light the conectors of the coil (4 wires) and with ignition on just one have power, and in craking mode. still just one have power, the other 3 wires dont show anything.

Can any body enlight me on this one?

I all my 5.3L have never happend this to me????

So no experience at all...please, tonight I want to big bass some ricer dudes!!!!!!!!!

[RedHeartbeat]

Check your engine harness ground at the back of the head. Also check your cam and crank sensor connectors and make sure there are no cuts in the wires. I cut the wire on the cam sensor and the engine would not start, so if you have a cut in the insulation it could be grounding out. Be sure the crank sensor wire is clear of the exhaust.

[OldSkool69]

Ok dude,

I'll check that Right away!!!!!


Post you in some minutes!!!!!

[OldSkool69]

Readheart,

Check every ground in the car, realive all of them.

heck every cable on the engine bay and clean it and tape the ones I saw in badly shape.

Clean with "conector spary cleaner every coil conector to the PCM and to the plug.

The car was cold.

I fire it up, stood for a while with the computer in scan mode.......and then suddenttly turn off.

There,s a code on SES

P0351 Coil1 control (inmature)


What this stand for?

[RedHeartbeat]

First thing to do is to check the wiring from the coil back to the PCM. The pin could have pushed it's way out of the PCM connector.

[RedHeartbeat]

That is a camshaft position sensor circuit performance failure.

That occurs when the PCM detects that a CMP (camshaft position sensor) to CKP (crankshaft position sensor) mismatch has occurred for at least 10 seconds.

[OldSkool69]

I'll check the wire and trace it to the PCM.


Also just went to the place I found the exact replacement for the NGK TR-6 in Champion.

So Right now I'm taking the RC9YC that place yesterday and putting in the RS9YC gapped to .35

[OldSkool69]

Just trace all the cables back to the PCM.

I took the PCM out. verified and took out the conectors, of the PCM and clean them up just to be secure.

Tacking those sockets out, does the truck need a relearn to start?

Cause is much worse now.

It does not turn on at all.....toatally busted my self now!!!!

[RedHeartbeat]

Sounds like you lost a crank or cam sensor. Is the cam sensor plugged in? The code you listed points back at the cam sensor. It has either failed or there is a short somewhere in a wire. Have you tried using a multimeter and check for 5 volts at the sensor, check the ground from the cam sensor connector and then check that there is continuity from the reference return lead at the cam sensor connector back at the PCM? Do you have access to a sensor you can borrow maybe from your old black truck?

[RedHeartbeat]

Oops...
12 volts on the W/B wire PCM pin 39 red PCM connector
Ground on the R/W lead PCM pin 61 blue PCM connector
Reference signal BR wire goes to pin 73 on blue PCM connector.