new to forum and a small question

[chezck]

and i have a question, i dont even know if i am posting in the right place... i just got a jeep liberty 2002 renegade, it started to idle hard for like 3 days, is there any way to adjust the idle on the liberty? thanks

 

[JeepJeepster]

Its all controlled but the PCM.. Probably time for a spark plug change.. Or maybe the intake needs a drink of seafoam.. How many miles are on it?

 

[deknight]

I think I may have to same problem, and I think its the spark plugs, vacuum leak, or something is clogged... like pcv valve. Just don't buy champion spark plugs.

 

[2003KJ]

If it's got a decent amount of miles on it with the stock plugs, i'd definitely start there.

Mine were shot at 25K.

 

[BMF454]

My mechanic told me to use only champion spark plugs, I see you guys don't like them, what are the best kind to buy? I'm interested in the new E3 plugs, anybody tried those yet?

 

[MoladoGuy]

My mechanic told me to use only champion spark plugs, I see you guys don't like them, what are the best kind to buy? I'm interested in the new E3 plugs, anybody tried those yet?

It's not that I don't like them, it's that they just don't work well with the vehicle. I had them in for a couple months and had bad idles. I replaced them with the Bosch Plats and it runs great. The Bosch Plats were the plugs I used to replace the stock plugs the 1st time, then Champion, but back to Bosch.

 

[rockymountain]

Let's get this straight. the stock plugs are NGK right? if you want it to run like it did when it was new, get the NGKs. Or am I wrong. I've heard Bosch plugs stink as well as the champions. What plugs does jparts.com give you in their selection? I think you are wasting your money if you get anything other than what was in it when it was new. ...for plugs anyway.

 

[MoladoGuy]

Let's get this straight. the stock plugs are NGK right? if you want it to run like it did when it was new, get the NGKs. Or am I wrong. I've heard Bosch plugs stink as well as the champions. What plugs does jparts.com give you in their selection? I think you are wasting your money if you get anything other than what was in it when it was new. ...for plugs anyway.

Your vehicle will never run like it did when it was new. I don't think it's a waste of money if you do your research correctly and analyze the results. Some people feel safe not to move away from the norm (OE) but others see and want the benefits of doing so. It's all in the eyes of the owner.

 

[MoladoGuy]

Emailed JParts.com and the spark plugs they sell are not NGK.

They are Champion plugs

Ken Kutzler
[email protected]
www.jparts.com
www.dodgechryslerparts.com

 

[rockymountain]

Emailed JParts.com and the spark plugs they sell are not NGK.

good to know. won't be getting those. I found this:
http://replacement.buyjpparts.com/p...=Spark Plug&category=F&returnurl=null&dp=true

The denso plugs look exactly the same as the NGKs. In the JetSki and Motorcycle world they are the only ones to get. They can take a lot of punishment. But we're talking about Jeeps, so totally different. ...or is it?

 

[Marlon_JB2]

lol. Champion plugs are worse than the factory NGKs. I can't believe that's the dealership replacement. Glad I do all the tune ups around here.

 

[Dave]

and i have a question, i dont even know if i am posting in the right place... i just got a jeep liberty 2002 renegade, it started to idle hard for like 3 days, is there any way to adjust the idle on the liberty? thanks

How many miles are on it? It's an 02 and you just got it so unless you know (service records) when the plugs were changed last, it wouldn't hurt to change them. But.......first I would check for a vacume leak which could cause a rough idle as it is the easiest thing to check and cheapest to fix. I would also run a bottle of seafoam (like jeepster said) or Techron Fuel System Cleaner through it. Also change the plugs. Pull the easiest one -left bank #1 and look at it. NGK's are stock. Check the plug color and gap. Mine is still running the stock plugs at 22,000 miles and running fine. (so far-fingers crossed)........ Some people here are running the Bosch Platinum's with good results. You could try those. Also a faulty coil pack could cause a rough idle. That's all I can think of right now. Just trying to help.

Dave

 

[chezck]

lol i totally loose this page so i couldnt get the answer to my problem... is kinda funny i was looking everywhere and i finally found it again... the truck has 85000 miles and one mechanic told me that it could be only the throttle bodies since the check engine light is not comming on... he told me thats nothing and that he could do it for free... i will let you know as soon as he sees it... thank you for the answers

 

[tjkj2002]

lol i totally loose this page so i couldnt get the answer to my problem... is kinda funny i was looking everywhere and i finally found it again... the truck has 85000 miles and one mechanic told me that it could be only the throttle bodies since the check engine light is not comming on... he told me thats nothing and that he could do it for free... i will let you know as soon as he sees it... thank you for the answers

With 85,000 miles probally time for a air filter change,fuel filter change,plugs,and a good fuel system cleaning.Those are the biggest causes of rough idleing.The IAC(Idle Air Control) in the throttle body only controls at what rpm the idle is at,it could be dirty though and needs cleaning.

 

[MoladoGuy]

The IAC(Idle Air Control) in the throttle body only controls at what rpm the idle is at,it could be dirty though and needs cleaning.

True!! A speck of dust on the IAC could lead the system to idle rougher. Fiancee's vehicle had that problem and it turned out to be a dirty IAC.