Codes...codes....codes

[Biggwaukegan]

Guys see if ya can help me here. Truck started popping out the exhaust yesterday. got the codes read if it helps. 4 of them. yikes P1345 says its a possible camshaft to crankshaft position correlation fault. next one....P0420 says its a possible cat convertor bad or engine misfire...P0430 basically same shit as previous code....last code is P0300 says its possible powertrain control module monitors the crankshaft speed and has detected a misfire condition. possible cause spark plugs, wires, coil.....doubt its the coil wires plugs to be honest.

Listen Im thinking 2 things here. 1....bad cats and possible bad crankshaft/camshaft sensor....or 2. Bad timing chain with 155,000 on it..Or maybe 3.....Do all of it and hope ***** good? help me here fellas please

 

[99Yukon_Z71]

Ross,

BEFORE you even try buying parts and throwing em at the problem, find out what your current camshaft retard timing is set at, I bet its around -15 degrees or more, causing the P0340 codes. Have you removed the distributor by any chance or check if it is loose? You will need a suitable scanner to read this info like a Tech II or Snap on etc. Try fixing this problem first, which will probably fix the random misfire P0300 code and poor driveability symptoms. You will need to place the Cam retard at 0 degrees +/- 2 degrees. You can also do a search on here for any more info, as myself and other members have written stuff on these problems.

Goodluck!

 

[Biggwaukegan]

ok ill check that. but honestly with almost 160000 on the orginial timing chaing I gotta feeling its that. Ill do your checks first to see if it nips it in the bud.

 

[99Yukon_Z71]

I forgot to add aswell, you might be right on the chain, but also check your distributor gear, it might be chipped or missing teeth.

 

[1999hoe]

ok ill check that. but honestly with almost 160000 on the orginial timing chaing I gotta feeling its that. Ill do your checks first to see if it nips it in the bud.

my issue was the distributor gear began to shear appart and was gradually more and more off center until it completely spun out all the teeth were ground down

 

[Biggwaukegan]

im gonna check the teeth today. If i gotta do the chain its fine but dam its a whole weekand of work. yikes

 

[TheBeast99]

a whole weekend of work for a working 'hoe? so worth it

 

[Biggwaukegan]

yea I got tied up with march madness and all kind of fun shit this weekand. Im gonna jump on the Monster tomorrow and replace the timing chain and oil pump. Weathers finally gettin nice so Im on it.

 

[Biggwaukegan]

well I replaced the timing chain. No luck. Still popping.....Gonna do the fuel filter today but I need some advice here. WTF is going on with my hoe? Timing chain was bad so I no the new cloyes helped. But Im still gettin popping sounds like misfiring or some shit. Both cats are fine I had them checked yesterday. Could it be bad fuel filter? Dist. Cap? Ive got good wires and plugs and stuff. Msd ignition and coil that has never given me any issues. Maybe the Distrubtor cap? help me here guys b4 i start swearin

---------- Post added at 11:41 AM ---------- Previous post was at 11:40 AM ----------

 

[hassoun]

Biggwaukegan,
i had a similar issue. it turned out that when i did my tune up they shipped me the wrong spark plug wires. if your ignition is Delphi, make sure you get the shorter wires. that resolved my issue and mine doesnt misfire anymore. fuel filter could cause this. also check your spark plugs and make sure the gap is set using the recommended measurements.

 

[Biggwaukegan]

Thanks for the quick response. Im gonna check all the plugs today but I no thats not it. It was running great for months then all of a sudden this. Im thinking fuel filter or something with the dist. cap. But I will check the plugs and replace the fuel filter with another new wix today. Shit is annoying

---------- Post added at 12:03 PM ---------- Previous post was at 11:54 AM ----------

hey just for ***** and giggles. Check out my little mighty mite lowrider. Funny thing is this thing has 475,000 on it. Just threw a Weber carb on it and it hauls ass. Got that cool 2.4 motor. 4 banger with 8 plugs. YIKES.

 

[Biggwaukegan]

 

[Biggwaukegan]

Believe it or not I drove that little mf from San Francisco to Milwaukee in the middle of winter. Its a champ

 

[retorq]

4 cylinders and 8 plugs ehy, I had a Nissan Stanza like that. LOL Crazy ****.

 

[Biggwaukegan]

true them **** are nutz. but hey can someone help me with my REAL TRUCK please.

 

[Biggwaukegan]

Well its at the shop. Im leaning in the direction of dist. cap failure but after I did the timing chain I figured Id try and figure out what it is b4 I guess at it. Hope its a simple fix.

 

[Biggwaukegan]

Guys Found out whats wrong with the Beast. Here it goes.....

1. Popping is because of a bad mass air flow sensor and bad distributor. Fixing both.

2. Intake gaskets leaking. Doing both top and bottome new with felpro gaskets.

3. Thermostat is bad. So is sensor next to it (forgot name). Fixing both as well. Oh its called the Coolant Temp. Sensor.

4. Crankshaft Postiion Sensor was bad. Replacing that as well.

5. Doing a oil change as well. Royal Purple with K&N Filter. The norm for this truck.

6. Just added a new Optima RedTop Battery as well, why not right.


Parts----$300 +300 mass air flow sensor new...Battery $ not included did that last week.

Labor----$225......

total bill $525...Ended up doin a used air flow sensor for free until next week when the Grannelli arrives.

 

[roc187]

it very well could be the distributor cap 97 yukon had the problem replaced the spark plugs and plug wires and still had the problem replaced the distributor cap no more misfiring

 

[_Dylan_]

awesome

 

[SunlitComet]

Damn newbs.