Cleaning TB, need help

[HyPer-50]

I've heard from a few people that my idle problem is from a dirty TB, so I figured I'd try cleaning it.. My idle problem is this; whenever I first crank my car, my idle sticks around 1750rpm, then after about 5 seconds drops down to 1500, then after a lil bit longer, it gets down about the average range around 850, but it keeps surging.... So say I crank my car, pull out of a parking lot and stop at a red light, my idle is going crazy at the light. But after I start going and stop again, all normal... Thats problem #1, #2 is; whenever i'm in traffic, ya know, alot of clutch using... the idle goes really low when I hold the clutch pedal down even occasionally stalling..... Anyways, for those of you who read through all this, and can actually understand what I'm sayin' (I'm not the brightest light bulb), my question is this.... How do I go about cleaning the throttle body, and what should I use? Also, does this problem I've described sound like it could be anything else? I've already changed the IAC, and I am going to try an idler air spacer.. Any other suggestions would be MUCH appreciated. Thanks.

 

[91BlckGT]

I've heard from a few people that my idle problem is from a dirty TB, so I figured I'd try cleaning it.. My idle problem is this; whenever I first crank my car, my idle sticks around 1750rpm, then after about 5 seconds drops down to 1500, then after a lil bit longer, it gets down about the average range around 850, but it keeps surging.... So say I crank my car, pull out of a parking lot and stop at a red light, my idle is going crazy at the light. But after I start going and stop again, all normal... Thats problem #1, #2 is; whenever i'm in traffic, ya know, alot of clutch using... the idle goes really low when I hold the clutch pedal down even occasionally stalling..... Anyways, for those of you who read through all this, and can actually understand what I'm sayin' (I'm not the brightest light bulb), my question is this.... How do I go about cleaning the throttle body, and what should I use? Also, does this problem I've described sound like it could be anything else? I've already changed the IAC, and I am going to try an idler air spacer.. Any other suggestions would be MUCH appreciated. Thanks.

I really doubt your problem is from a dirty TB. The're not meant to be cleaned, and unless you've got so much carbon built up that the bypass holes are blocked, you're barking up the wrong tree.

I suspect your idle problems are related to haveing a 75mm C&L meter. Those are notorious for that. You could have your TPS mis-adjusted as well (should be about .95-.98)

Hmm, with a 65mm TB, it's probably not it.

 

[jrichker]

The electrical contacts for the IAB will tarnish and make a connection that will cause unstable idle. The connections can be cleaned with the same cleaner as the TB. Use a jewler's screwdriver to scrape the contacts bright and shiny. A little dielectric grease on the plastic shell can help seal the the connector.

 

[Pod]

Mine had exactly the same problem. My TPS was broken. Installed a new one and the idle stopped surging. There may be other reasons as mentioned above, but that fixed mine.

 

[HyPer-50]

k,I'm gonna take the car in and have them check and see if they think it's messin' up. If thats not it, I guess I'll start lookin' for a smaller maf lol. Gotta start with the cheapest fix first. Thanks much for the help.