OBD II ?'s

[jerryg79]

So the other day my truck dies while im going down the road. Battery is dead. So easy enough I change the battery and the alternator just to be safe (alternator under warranty, battery so dead it wouldnt charge)

Well the battery was out of the car for a day, so I'm thinking that the computer reset itself. It was a bitch to start after I put the new battery in, but it finally started. It ran ****ty for a couple of minutes, but then it was fine. It ran like a motor with the timing ****ed up on it.

I started it 10 times yesterday throughout the day, and it turned over, but it still took a while to start.

I drove it to work today, and it died again, but it still turned over ok, just no gas getting there im thinking.

So here is my thoughts. The service engine soon light is on, read the code, it says "cam shaft to crankshaft misalignment error" this tells me that either the camshaft positioning sensor or the crankshaft positioning sensor is bad. But I dont know which and they are relatively expensive.

I'm thinking that since the computer has reset, it is freaking out because it is trying to get readings from those sensors and since one is ****ed up, it cant get the timing right.

Any ideas? Does this make sense or should i stop using this marker in a non-ventilated area?

[jerryg79]

Update....

I just went out to start it and it started fine.

The other thing i noticed is that the truck is running hot (again).

But it has cooled down now

So maybe the high temp is also ****ing up the computer relearning or what ever you want to call it?

Wow, someone should really do some maintenance on this truck!!!!

On a side note, this marker really does smell good!!!!!

[Chadnutz]

What kind of vehicle. CPSs go out pretty often in powerstrokes. Maybe you should have a more descriptive signature. I have no idea who you are.

[jerryg79]

better????

I'm sure that doesnt help because you will still have no idea who i am.

anyway i was just going to edit to say that it is a '98 chevrolet 1/2 ton with a 350.

[Doug Krebs]

holy **** jerry i almost just pissed myself....

I don't know jack about the new chevy engines, but on the blazer there is a temp sensor ($13) that controls a bunch of ****...they are known to go bad and make the engine run like ****....Also the O2 sensor.... but it's weird your getting that camshaft ****

[jerryg79]

Damn it Doug, I thought you would know.

What about the all-knowing Fred or Flem???? any input?

[Doug Krebs]

yeah if that error is real.....your engine might be ****ed....misallignment between the cam and the crank??? Doesn't sound good to me....

[jerryg79]

I used Tom over at Offroad Unlimited's Scanner to run the code. He had the same problem with a 98 Z-71 he had, but due to the fact that he is quite possibly the biggest stoner in the world he told me in a voice similar to that of Tommy Chong "that he couldnt remember if he replaced the crank or the camshaft sensor"


I should have replaced both of them then (3 months), but I was broke as a joke and had to spend the money on the broke ass power steering instead.

PS I was mistaken it is a correlation error not misalignment, wrong use of the words.

[BMFScout]

nice sig fag, fred will be on here in a few, probably take a stab at it then. u r gay, try white-out it smells frikking awesome...

[uglyota]

Maybe your tchain jumped a tooth (or maybe distributor gear or dist. drive gear f-ed up). Will run like chit (if at all), hot, start hard, check engine light, etc. Doesn't explain the original alternator problem...I'd say take it to a shop with a reputation for knowing electronics. A messed up relay can act like a billion different mechanical problems.
Eric

[Chadnutz]

smart ass :flipoff2:

[Fredo]

Well, If I remember correctly, the Crankshaft and Camshaft positition sensors do the same thing. I think it's a redundant system to keep things running. Did you change the cap and rotor or move the distributor? Check the actual sensors and see if they are loose or the connectors on them have any corrosion or are loose. How many miles are on the truck?

[Fredo]

hey, you gonna respond or what man? I'm trying to help. :flipoff2:

[BMFScout]

yeah, it's like you are employed or something...

[jerryg79]

Sorry,

I havent changed the distributor or anything. only battery and alternator.

the truck has around 85000 miles.

I will have to check the sensors when i get off work

[uglyota]

so what's the verdict?

[jerryg79]

Saturday - girlfriend's dad's birthday...**** to do all day
Sunday - ordered parts from o'reilly
Monday - changed crank sensor, no help, attempted to change cam sensor, realized its in the distributor, bought torx set to take apart distributor as well as engine coolant sensor, torx set broke after two screws, took it back to o'reilly, called it a night

Today i'm putting in cam sensor and engine coolant sensor

If that dont work its going to a shop

I'm beginning to think it is a ground issue because when the truck warms up, you have to rev it up to keep it going and when you do that, the speedometer will move all the way up to 15 mph(while you are sitting still), the oil pressure gauge freaks out, and the voltmeter freaks out.

This Sucks!!!!!

On a side note i did find out that if you run the truck with the airbox off it gets really pissed off and runs like ****:D

[JeepsterJayson]

Yeah MAF hates not having a voltage reading.
I put an alternator in our 98' Chevy 1 ton w/ 350 (Sears delivery truck) and had no problems. It ran good for about three months, then when we were doing a delivery 40 min away from G-town it decided to short out the entire wiring harness from the alternator to distributor and battery. Well Auto zone warranty covered the alternator and the boss covered the other $600. Story short I wouldn't trust a new alternator if it didn't run like crap tell after the replacement. It could be giving it a weak voltage to the distributor but I have never heard of an engine running like crap when your alternator is going out. But thats my experience with crappie alternators.

[mark]

Originally posted by Snatch Adams


I'm beginning to think it is a ground issue because when the truck warms up, you have to rev it up to keep it going and when you do that, the speedometer will move all the way up to 15 mph(while you are sitting still), the oil pressure gauge freaks out, and the voltmeter freaks out.

This Sucks!!!!!

On a side note i did find out that if you run the truck with the airbox off it gets really pissed off and runs like ****:D

This sounds like there is a voltage problem still. The gauges freak out when there is low voltage. Same thing with having to rev the engine to keep the ignition going. Have you checked for corrosion on the battery cables? Sometimes with a corrosion problem you will see normal voltage until you go to start it. Does it always start? Thats where I would start.

-Mark

[fbronco86]

for real who is this snatchadams guy what a fag:flipoff2: sorry jerry my dads truck has not done this yet. but i am sure it will do it with in a few weeks.

[jerryg79]

she's sitting at the dealer now....

It's a ripoff i'm sure, but it only drives for 5 minutes before it shuts off so it had to be somewhere close.

they are gonna charge me $75 to figure out what is wrong with it, but if they do the work there, they wave that fee.

Still waiting on a call back from them

[jerryg79]

Yeah so the short story is....

the bottom end of the motor is trashed


AWESOME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

At the beginning of the summer the intake started leaking....i posted a thread about it....well i pressure tested the coolant system, and it stopped leaking, i'm thinking the gasket must have been pinched or maybe there was some **** in between the gasket and metal that the pressure test blew out (stupid stupid stupid) turns out the coolant was leaking right into the motor and now the bearings in the motor are shot....

its pretty sweet you can hear the crank rolling around in there and the motor makes no power and no oil pressure

changed the oil twice....milky both times with cool pieces of glitter in it

so anyone got a line on a small block, the fun part will be telling my mom how i need to borrow multiple thousands of dollars to put in a new motor.

[jerryg79]

and that kids is what lack of maintenance, laziness, and beating the **** out of your truck will do for you:mad: