60mm Eclipse Throttle Body.
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60mm Eclipse Throttle Body.
This afternoon I installed one on my car (95 Elantra.) Basically everything hooked up fine but I had to modify the TPS to run in my car. I adjusted it to spec. (using my S-AFC, I didn't have a multimeter) and the car runs great (Great throttle response esp. at low end.) However, the idling is ****. It idles erratically from 900rpm to about 1200rpm...up-down-up down. So I was wondering what the problem was. I tried adjusting the BISS to no avail (very negligible improvement.) To those who have installed bigger TB's, is there any other adjustment required other than the TPS? Should I adjust the fixed speed adjustment too? Air Bypass Valve? ISC?I will be going to Hyundai tomorrow to have my buddy Ted diagnose it meanwhile. Your help is greatly appreciated.
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Heh heh--every time I've seen erratic idle, it has been due to vacuum leak wink
But in this case I would tend to agree--most people who have gone to larger TB's tend to use the hyundai TPS. Applying a sort of 'hack' fix to the throttle map is a dubious solution.
But it doesn't hurt to check all your intake connection lines and tighten up the bolts before you bring it in.
But in this case I would tend to agree--most people who have gone to larger TB's tend to use the hyundai TPS. Applying a sort of 'hack' fix to the throttle map is a dubious solution.
But it doesn't hurt to check all your intake connection lines and tighten up the bolts before you bring it in.
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Actually, I used the Eclipse TPS and it seemed fine (within Hyundai spec. 0.48V-0.52V at idle and 4.8V-4.9V at WOT.) I went to Hyundai Service and Ted told me that it's probably my ISC motor that can not compensate for the extra air flowing in at idle. I got pissed and decided to mess with it myself. The one thing that I did that corrected the idling problem (kinda) was the placement of the T/B gasket. In the Talon manual they are very particular on what orientation it should go in (something I didn't check) and my idling is stable now. It's not exactly within Hyundai spec. but I can live with it. Thanks guys for your help.
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diambo4life:
I went to Hyundai Service and Ted told me that it's probably my ISC motor that can not compensate for the extra air flowing in at idle.
do they mean the idle bypass pump? if so well the 1.8L betas can handle the SR 58mm BBTB's just fine. And the 2.0L's a 60mm BBTB just fine and my new elantra the 61mm BBTB just fine (this is just with the bypass hole though not a pump) I think that guy at the dealership better read up on big bore throttle bodies. Even with bored IM's noone seems to have a problem with thier BBTB's shoving too much air into the car causing an erratic idle. I still think its the fact you are using a mitsu TPS. But if it corrected a litte because you changed the gasket around ok.
I went to Hyundai Service and Ted told me that it's probably my ISC motor that can not compensate for the extra air flowing in at idle.
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Whoa...You guys are all getting confused...."diambo4Life" has a 95 Elantra and the only reason why a Eclipse/Talon TB fits is because its basiclly the same motor only detuned and no turbo.
The Eclipse/Talon TB WILL NOT fit the Beta motors.
Your Idle problem is caused by an incorrectly adjusted TPS and idle switch. You may also have a faulty IAC motor, very common on the Mits motors.
The Eclipse/Talon TB WILL NOT fit the Beta motors.
Your Idle problem is caused by an incorrectly adjusted TPS and idle switch. You may also have a faulty IAC motor, very common on the Mits motors.