please help, this is getting sort of dangerous!

SleeprNeon · Post by **SleeprNeon** » Tue Jan 18, 2005 12:35 am

im getting codes p0508 and p1684

well, what may car is actually doing is that while im driving its fine but when i slow down, it will either die under like 20 or it will idle so hard the whole car shakes and i have no idea what it could be, and when it starts to die at night all the lights go dimmer then it dies

the mods i have are k/n filter on tb, mufler, mopar wires and botch 4+ spark plugs
could any of those cause it?

please help me i need all i can get

i was driving today and it died on a turn and there was a cargo truck coming right at me at around 45 miles an hour, luckly i got it started in time to go and get up to speed

also...
and i dont know if this is related but sometimes theres is a loud buzzing type noise in the front drivers side fender when im at idle
it sounds like its coming from that stock black intake tube that goes ito the fender any ideas what that could be?

all help would be appreciated[/b]

Frizbe · Post by **Frizbe** » Tue Jan 18, 2005 12:46 am

No Post

RTst · Post by **RTst** » Tue Jan 18, 2005 1:04 am

#1 take those plugs you're using and replace with the cheap champions. That would be my best bet.

The p1684 is just the disconnected battery code

I believe the other code is

P0508 Idle Control System Circuit Low (from a non neon site).
That is why I believe it's electrical, and plugs would be the first thing I would check.
RC9YC is the Part number for the Champion plugs.

2k2patriotblueneon · Post by **2k2patriotblueneon** » Tue Jan 18, 2005 5:13 am

RTst wrote:#1 take those plugs you're using and replace with the cheap champions. That would be my best bet.

The p1684 is just the disconnected battery code

I believe the other code is

P0508 Idle Control System Circuit Low (from a non neon site).
That is why I believe it's electrical, and plugs would be the first thing I would check.
RC9YC is the Part number for the Champion plugs.

Hes right, install cheapo champion coppers, mine did exactly what you said.

Nightspy · Post by **Nightspy** » Tue Jan 18, 2005 10:46 am

Bosch platnum plugs have a very thin electrode.. they love to break and fall out. this was confirmed by testing done at Denzo years ago. NEVER buy Bosch plugs.

DjTransifi · Post by **DjTransifi** » Tue Jan 18, 2005 11:38 am

Yes do change them back to stock plugs. I tried the Bosh plugs and my car ran worse than the 84 buick I have that is out of timing. The noise you hear comming from the CAI is just that.. The CAI.. Readjust.. Its vibrating against the fender wall or the edge of the circle its going down in..

glasjaw · Post by **glasjaw** » Tue Jan 18, 2005 12:05 pm

yea i would definately say something with the plugs

i had something kinda similar 3 weeks ago, engine was misfiring, turns out one of my stock plugs went bad (20k miles on the car)

dawm · Post by **dawm** » Tue Jan 18, 2005 3:48 pm

as everyone else has suggested, switch back to stock plugs, if it continues with stock plugs take it to the dealer, pay the $40~ diag fee and find out whats wrong

SleeprNeon · Post by **SleeprNeon** » Tue Jan 18, 2005 8:13 pm

alrite thanks guys any more suggestions would still be appreciated, but ill put my old plugs back in, and see if that works, and about the buzzing, i dont have a cai which is why the noise was worrying me

RTst · Post by **RTst** » Tue Jan 18, 2005 11:23 pm

I wouldn't suggest using old plugs. They can be dropped and cracked than could possibly drop into your engine.

I suggest you buy a new set it will cost you like less than $20.

RC9YC Champion plugs.

RopeRat1 · Post by **RopeRat1** » Thu Jan 20, 2005 9:21 pm

Hiyas
ABSOLUTELY get rid of the Bosch plugs. I first tried then 20yrs ago in a '69 Opel GT and they didn't work nearly as well as a set of Champion plugs.

The Champion plugs for Neons are updated to a RC9YC4. They have an extended inner gap to fire hotter. I put a set in my '04 R/T and they made a major difference in idle quality and throttle tip-in response.

Clean the throttle body and idle air control passages.

Reset the fault codes and if these don't fix your problem, get it to the dealer.

Let us know what fixes it.
Jonathan (RopeRat1)

SleeprNeon · Post by **SleeprNeon** » Thu Jan 20, 2005 10:41 pm

hey guys thanks for your help, i replaced the plugs and the problem isnt happening anymore, but the engine light is still on, with the same codes, and if i were to clean the idle air control passages, where and what are those?

Nino@MODTECH · Post by **Nino@MODTECH** » Fri Jan 21, 2005 3:05 am

The IAC motor is mounted on the side of your throttle body. 2000 models are plastic and 2001+ is aluminum. You don't really need to clean it. You should really think about replacing it if your car continues to die at idle. The IAC is also used when you use your AC.

satrnbmb · Post by **satrnbmb** » Fri Jan 28, 2005 3:20 pm

SleeprNeon wrote:hey guys thanks for your help, i replaced the plugs and the problem isnt happening anymore, but the engine light is still on, with the same codes, and if i were to clean the idle air control passages, where and what are those?

About these codes still being on...

Have you reset the ECU? Basically disconnect the negative battery terminal for like 20-30 minutes. Hook it back up...bam no codes. If the codes come back now...then there's something else that needs to be addressed.

2GN.ORG

please help, this is getting sort of dangerous!

please help, this is getting sort of dangerous!

Stalling