I think it needs to be 2"
It sure won't hurt.
It eliminates one of the variables as well.
Should be ~2" ?
2.375/6.75 = X/5.5
X = ~2
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Steeda pulley set installed, having idle rpm problems
- Thread starter FIREBALL
- Start date
I think it needs to be 2"
It sure won't hurt.
It eliminates one of the variables as well.
Should be ~2" ?
2.375/6.75 = X/5.5
X = ~2
Nope, Im taking it to a shop on monday for diagnosis. Its still hunting for the correct idle, sometimes it goes up and sometimes down and like I mentioned before when i turn on the ac the idle lowers instead of raises and the same thing if I turn the high beams on and hit the brakes at the same time---but the voltage stays up, Crazy!!!
Let us know what you find but pretty normal for the brakes to make idle dip a hair. It's extra drag on the engine.
First off, I did go with a smaller alternator pulley (1.88 ") which overdrives the alternator a little more than stock which increased my idle voltage to an average of 14 volts---that didnt help. So today I took it to my highly knowledgeable shop guy (who knows these engines more than most) and he told me it has to be the IAC or TPS and he told me to take it home and clean out the IAC and check the voltage on the TPS. I took it home and first measured the voltage on the TPS and it was good at .988 volts, I then took off the IAC and cleaned/sprayed it out with Berrymans, installed it and it seemed to make a little improvment so I went and got a new IAC thinking this is going to do it-----NOPE, same old thing, good idle untill the AC is turned on and then it all goes south. After I shut the ac off then the idle goes up to over 1000. Crazy!!
The issue kinda fits the bill of a vacuum leak. I wonder if either, this might be a separate issue that just happened to begin when you changed pulleys, or if maybe you disturbed a vacuum line at some point.
Just something to try. You might want to--with the engine running--locate and spray around all the vacuum lines with some carb or brake cleaner, listening for a change in idle speed when you spray.
Edit: I'd forgotten I was in New Edge forums, and had also suggested checking your IMRC linkage rod-ends for vacuum leaks. I'd still check for vacuum leaks elsewhere though. Also, if you're able to data log your fuel trims, you can check for vacuum leaks that way. You'd be looking for oddly positive fuel trims.
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Just something to try. You might want to--with the engine running--locate and spray around all the vacuum lines with some carb or brake cleaner, listening for a change in idle speed when you spray.
Edit: I'd forgotten I was in New Edge forums, and had also suggested checking your IMRC linkage rod-ends for vacuum leaks. I'd still check for vacuum leaks elsewhere though. Also, if you're able to data log your fuel trims, you can check for vacuum leaks that way. You'd be looking for oddly positive fuel trims.
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I had it smoked checked for vacuum leaks---no leaks, I installed a new TPS, the voltage is now .97 and it made a small improvement, and I had the AC system checked and system evacuated and recharged, now AC is working great even with the under drive pulley but problem still persist, when the AC is turned on the idle goes down and fluctuates and when the AC is turned off the idle goes up to over a 1k and when I turn the car off and then restart it Idles fine -----untill AC is turned back on.
Man, I feel your pain in dealing with this. It must be frustrating. Over the years, I've had a couple weird issues from outer space, that apparently no one in history had ever had before (one of which was a speedo issue that took me 5 years to eventually figure out).
I guess just keep driving it, and maybe the issue will one day make itself known. Now you've got me curious what would happen if you put the stock pullies back on. Anyhow, keep us posted if you figure anything out.
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I guess just keep driving it, and maybe the issue will one day make itself known. Now you've got me curious what would happen if you put the stock pullies back on. Anyhow, keep us posted if you figure anything out.
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Just a shot in the dark, since you're running out of things to try. I'm wondering about the condition of your belt tensioner--whether it's tensioning properly. I can't necessarily envision how that would cause the issue, but...
Edit: Also, I'd probably still check fuel trims, if you're able.
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Edit: Also, I'd probably still check fuel trims, if you're able.
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Todd NA Svt Warren
NA SVT Camshafts, Modular Tech Group Public Group | Facebook
Maybe you should join this site and post up....worth a shot.
NA SVT Camshafts, Modular Tech Group Public Group | Facebook
Maybe you should join this site and post up....worth a shot.
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Well here it is----Nobody could have guessed this, it turned out to be the reverse lock out module for my magnum t56. I had installed the magnum and its module close to the same time as my underdrive pulleys. So after replacing most of the under hood sensors and taking to shop for diagnosis and talking to 3 experts no body could figure out my idle problem and how it was connected to the AC being turned off and on. I disconnected the battery 4 times in the last 2 months trying to reset everything and that didnt work. Last week I took it out for a drive and I started having trouble putting it into reverse and also it was trying to go into reverse when shifting into 5th and I thought great now Im having trouble with my new transmission------After much thought I decided to unhook the lock out module from the transmission and power supply and low and behold my idle returned to normal with or without the AC being on. So I had a bad lockout module from the beginning but how it was causing a problem with the idle and especially with the AC is a head scratcher!!!! My module was from Jegs , so I have to buy another but its not going to be the Jegs one.--------Any recommendations for a new lock out module?
well that’s crazy, where did you have your power tapped into? Into something with the climate control is all I can figure. I believe mine is from Samco or something like that?
Had it attached to accessories /radio. Radio worked great and still does. Through all this it never threw a code. Yeah direct from Samco is the cheapest and its what DDperformance sells who I bought my transmission from, I have to find out who makes Jegs before buying another.
That module works off the speed sensor right? If so it might've been messing up the speed signal to the ECU so it wouldn't know when to return to idle.
That's interesting. Glad you got it worked out. Thanks for the update.
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At first I unhooked the power supply that didnt change it so I hooked it back up, then the next day I unplugged the speed sensor and lock out solenoid and that didnt change it so then I unhooked the power supply again along with the solenoid but not the speed sensor and thats when the idle went back to normal, ---The problem has to be the module. With module and solenoid unhooked it shifted great except for not going into reverse and it went right in to 5th without it trying to go into reverse.
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Thanks OP for letting us know what the cause was and how you fixed it. Too many times these threads do nothing to help others because they are not completed.
Accutach sells a module that may work for you.
Found this on a recent sn95 thread.
This is mwolson' s designs.
Accutach Company
Tap products and services.
Found this on a recent sn95 thread.
This is mwolson' s designs.
Accutach Company
Tap products and services.
Thank You, I already ordered the Samco, although it looks like Samco might be the supplier for Jegs, Summit, D&D and others, if it doesnt work than Ill try the Accutach as it looks like to be a different design. ----- Thank you to all posters for the input and suggestions on this.
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