well about 2 years ago i put some autolight plat2 in my truck when it had 80k on her and now i'm up to 120k on the old girl. i have noticed that when in park the truck sounds louder and has a little knock ish to the engine and louder then normal.

i do run seafoam threw it but maybe ill try it again.

and i was wondering has anyone tried the Iridium plugs? i was looking at the Autolight ones? are they good or are they bad? caus i was looking for a smoother idle if possible and a better spark.


Also when i'm sitting at a red light i noticed the rmps would drop to almost die out and i would have to put to newtral and rev it up to keep it running. i normaly clean the MAF every oil change but it has been bad pollen here and engine compartment is all yellow so ill clean again.

but do u think the IAC could do that also? i have never cleaned that out. if so How do i clean it properly?

Thanx
Nick

 

but are ther any advantages with the iridium spark plugs. i have heard a lot of really good things about them especialy the NGK ones and Denso plugs.

and whats the average life of a spark plug like i have now being a Autolight plat2?

 

I agree.

I cleaned my original IAC with brake cleaner and that bought me some more time but it would eventually go back to it's normal "almost stall, rpms drop under 500" symptoms so I eventually tossed it and got a new one.

 

how much was yours? and how sould you tell if it was dirty? did it have a black layer on the inside of junk?

 

Yes, it had this black oily type stuff in there. After cleaniing it, it was nice shiny aluminum like it should be (New one looked exactly like that).

I don't remember how much it costs but I believe $50 or a little under because if it was more then that, I'd pay my $50 co-pay and have them change it out under warranty and I didn't do that so, under $50 lol.

 

new iac is like 55 bucks.. its not too bad.i replaced mine several months back

 

I purchased an IAC from Autozone a couple weeks ago, it was around $45 I think. Although, O'reilly wanted $90 for it.

 

^^ gotta love my employee discount

 

lowest i have found was 87$ lol highest was 104 at autozone lol

i just put in new double platnum plugs autolight back in.

after cleaning everything up MAF,IAC,Plugs,Cold air filter, and put on new dielectric greese on all the boots it is running 10x smoother and the rpms seem to be lower.

the old plugs were 40k miles old and there was no carbon on them, but the spark was blasting to the side of the pin wairing away at the metal thing that curls over, also went from .052 to .064. i regaped new to .054 cause it said between .052-.060

 

well to let everyone know i just filled up today for 2.60 per gal and i got 18.7mpg!!!!!!!!!!!!!!!!!!!!!!!!! i was like omg! i new it lasted a lot longer then all the other fill ups lol. just by doing the spark plugs, clean air filter, Maf clean, IAC total clean out and i jumped from 14-15mpg to 18.7mpg wow i was so happy lol.

just wanted to show how happy i was lol

 

I have the autolite xp's and underdog performance wires, Im happy so far!

 

Glad your MPG are back up.

FYI: I checked www.fordparts.com For a 3.0 it's $49.74 and for a 4.0 it's 62.51 for a brand new IAC (99 model year)

My local dealer wanted $90 for an IAC for my 3.0. I got it from them for $47 some dollars plus 10 bucks shipping (ordered some other stuff as well).

 

kool i check my dealer and if there still to $ ill order from there. thanx man