[enkeivette]

Originally Posted by kdracer73

I did some checking on the code p0340 and most common repair is the cam sensor. I also found a TSB ( TSB 18-024-04 ) for missfires. Dodge says replace the plug wire and plug and have a ECM re-calibration. Printed it but have no way to copy and paste it. Our program at the shop won't allow it. I will be doing some work at my friends shop in MV tonight , if you want to grab it on your way home.

I can believe that. A few of the plug wires were arcing in my Neon when I first got it.

[BlacknBoostn]

Originally Posted by kdracer73

I did some checking on the code p0340 and most common repair is the cam sensor. I also found a TSB ( TSB 18-024-04 ) for missfires. Dodge says replace the plug wire and plug and have a ECM re-calibration. Printed it but have no way to copy and paste it. Our program at the shop won't allow it. I will be doing some work at my friends shop in MV tonight , if you want to grab it on your way home.

yeah i was doing some digging and saw that the plug wires is a common problem for that misfire too, but don't know anything about the ecm recalibration. i don't have a ride back yet today so i'll let you know haha. i need to return your compression tester as well but it's at home.. (didn't want to bring it into work). do you have a way to fax that paper? if not then i'll swing by and grab it asap.

[BlacknBoostn]

if the new cam sensor doesn't fix the misfire then i'll be getting some nice new plugs. mopar ones are more expensive then aftermarket ones anyway...

what was weird is i don't think it was misfiring the other night, only sounds bad on idle (not like a misfire tho, more like i'm running some big cams haha). on throttle (gave it just a little bit of gas to hear if anything else was happening) it sounds PERFECT. no knocking, popping, misses, fuel cut or anything.

[BRIAN]

Originally Posted by BlacknBoostn

if the new cam sensor doesn't fix the misfire then i'll be getting some nice new plugs.

There are simple procedures for testing all these components if you want to give it a shot. If you have the repair manual from Dodge or possibly the ones found at auto parts stores, they should describe what to look for when testing with a multimeter or the like. It saves having to throw parts at your car.

[BlacknBoostn]

Originally Posted by BRIAN

There are simple procedures for testing all these components if you want to give it a shot. If you have the repair manual from Dodge or possibly the ones found at auto parts stores, they should describe what to look for when testing with a multimeter or the like. It saves having to throw parts at your car.

What's a multimeter? Never heard of it... Is it expensive?

[enkeivette]

Originally Posted by BlacknBoostn

What's a multimeter? Never heard of it... Is it expensive?

You can prob pick up one at Sears for like $10, but the nice ones are several hundred. I have one you can borrow if you're that cheap.

You can't test the spark plug wires with a multimeter. The wire may be intact and show normal resistance, but that doesn't mean they're not arcing. No way to test insulation with a multimeter. Have your fiance rev the motor while you look at the engine in the dark, if you see sparks, bingo.

[Vettezuki]

Originally Posted by enkeivette

You can prob pick up one at Sears for like $10, but the nice ones are several hundred. I have one you can borrow if you're that cheap.

You can't test the spark plug wires with a multimeter. The wire may be intact and show normal resistance, but that doesn't mean they're not arcing. No way to test insulation with a multimeter. Have your fiance rev the motor while you look at the engine in the dark, if you see sparks, bingo.

Fill a water bottle with some water and a lil' bit of dish soap. While the engine is running spray a light mist over the engine. You'll see it clear as a bell if it's arcing. Why soap? Because it slows the rate of evaportion and makes the arc last a little longer. If it were just water finely misted it could be instantaneously vaporized by the discharge. Learned this from Tim or Glenn, can't remember.

This is what a multi-meter looks like. As enkei says, starts at about $10 and goes up to whatever you feel like spending.

[BRUTAL64]

Originally Posted by Vettezuki

Fill a water bottle with some water and a lil' bit of dish soap. While the engine is running spray a light mist over the engine. You'll see it clear as a bell if it's arcing. Why soap? Because it slows the rate of evaportion and makes the arc last a little longer. If it were just water finely misted it could be instantaneously vaporized by the discharge. Learned this from Tim or Glenn, can't remember.

This is what a multi-meter looks like. As enkei says, starts at about $10 and goes up to whatever you feel like spending.

You got that from Tim.

The meter shown is $2.99 on sale and about $5.99 when it's not at HB. I've got 4. Can only find 1.

[BlacknBoostn]

Originally Posted by Vettezuki

Fill a water bottle with some water and a lil' bit of dish soap. While the engine is running spray a light mist over the engine. You'll see it clear as a bell if it's arcing. Why soap? Because it slows the rate of evaportion and makes the arc last a little longer. If it were just water finely misted it could be instantaneously vaporized by the discharge. Learned this from Tim or Glenn, can't remember.

This is what a multi-meter looks like. As enkei says, starts at about $10 and goes up to whatever you feel like spending.

hmmm I'll have to try that!

OK, i thought that was a volt meter i guess or something, I've seen those. Theres an electrical repair kit I'm going to pick up that has one of those with it. Anyone know where to buy crimps and 8 gauge copper insulated wire? audio grade at least (redoin the grounds)

[kdracer73]

Originally Posted by BRIAN

There are simple procedures for testing all these components if you want to give it a shot. If you have the repair manual from Dodge or possibly the ones found at auto parts stores, they should describe what to look for when testing with a multimeter or the like. It saves having to throw parts at your car.

I printed the diagnostic chart for P0340. It is seven pages of voltage , resistance and scan tool, W/ lab scope, specific tests. I will give this to boostn and will loan him my multi meter if he wants it.