P0507 / P0121 high idle RPM
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- Опубликовано: 15 сен 2024
- Go through one of the possible causes for high idle RPM on a Northstar engine. specifically 2005 Cadillac DeVille. At the end of repair be sure to disconnect your battery to reset computer. Otherwise there's a chance your car may not shift properly. My car at Time of Repair has 154,000 miles
Thank you for this video. Your knowledge saved me hundreds from the run around local mechanics charge. Make up stories sell you parts you don’t need.. Happy New Year!!!!
Glad I could help! I love helping out other people solve problems that i have had to solve myself. I try my best to spread the knowledge and save people $!
@@jamesc.3524 aaaaa
I have a 98 chevy Cheyenne pick up.i have had a slight rise in RPM for years replaced the tps twice recently it got worse.watched your video replaced idle air control. The issue disappeared. Thanks for the short and informative video
Glad this video helped you out!
Thanks, couldn't figure out how to adjust it until now, I think my high rpm problem is solved.
Spent money buying parts I didn't need
Thank you .. Massively helpful .. I appreciate you taking the time and sharing this !!!
Glad it helped!
Thank you ,since I changed my IACV,my truck has been holding a steady 1000 rpm at ldle .l didn't know about dialing in or out the tip.Am anxious to try this on my 98 ram.Hope it works
It took me many videos to find this fix.Thanks again.
Glad I could help!
Thank you for sharing this video. I had the same problem and replaced the valve and reset the battery. Car runs like new.
Glad I could help !
How do you reset the battery please???
@@robbob5973 i just took the back seat out bottom section and disconnected both battery terminals gave it 30 mins and reconnected the battery.
@@cadillaccraig1 where did you get the parts, do you have parts information... Thanks
Thank you for sharing!! This was an immense help, I just couldn't figure out where it was located!
Glad I could help!
I cleaned it today!! Thank you so much man
Glad it could help!
Absolutely
Many thanks, just saved my life!!!
Your welcome! Runaway cars can kill ya...lol
Thanks for this video.. Got the same problem Imah fix tomorrow..
@Reginald Colt yep great job.. I fix my problem..
@Reginald Colt YEP 100!
Problem solved...Thanks
Thanks man having the same issue figured it was this or the TPS sensor couldn’t find A video on the north star 05 then I found yours
Glad i could help !
My exact problem I thought it was crazy!!! Thank u
Just curious what kind of car/ truck?
@@jamesc.3524 97 cadi Deville
@@rwp-artartinthedark3538 Wow... I had no idea it would work for the older northstar platform. Glad to know it helped you out!
Thx brother
Glad to help.
Hi. I realize this video is spot on for the high idle problems. My question is, about the red oring, @2:07 , is the 0ring in the correct place? I put the ,03 Deville, 0ring back farther towards the mounting flange . Still fast idle. My old one was black and dried out alot. I did the battery disconnect 2 times. I am thinking I didn't put it together right. What do you think please?
Rob, I never moved the red O ring. It came out like that and a new one came with the part I ordered from Amazon in the same place. Have you replaced that part? I would deffinately try that. Sorry I could not be more help.
Thanks
Great video! Thankyou!
Your welcome!
I did this and even bought that new part and nothing changed. On my car it was the boot that connects the intake to the throttle body it had a cut in the boot
Yes that can be a cause to. I saw several other videos covering that. I wanted to make this one to cover the throttle body and idol air control.
Hey I believe that it’s the this part , I whated to ask did you have to set this new part or did you just put it in and go ? I seen other videos that you have to adjust it before you replace it? Just asking thanks again for sharing! Ps I have the same car
Just put it in and go.
@@jamesc.3524. Thankyou for your time
Good video glad to see people still enjoying these old cars! I have 2005 and the cruise control keeps staying on after I hit brakes, so I guess this might have some thing to do with it ?
@jameswhite1319 Its possible but I doubt it. I would try disconnecting the battery for a few hours and seeing if that resets it. I never had that issue with my Deville.
More likely the brake switch is out of adjustment, displaced (Knocked off its mount), or bad.
@@tinkerscorner54 that's a great point.
@@tinkerscorner54 ok thanks I look at it!
what if i'm having the same issues but not all the time only sometimes but everyday pretty much, after a while of driving it starts doing that, throttle body had alot of built up oil on it
A clean throttle body is a happy throttle body.
thanks youre the man!!
👍
So I just changed thermostat on 2000 Chevy Malibu,drained, flushed, and bled air from coolant system, and as soon as I finished....I know that I inadvertent caused another problem ...(and solved overheating and blowing cold air problem)I got a check engine light with a po507...but, idle would go too low....almost stall....I figure it will probably be that gasket on air intake that fell apart when getting to thermostat...I hope anyway...if not I will go to the valve and keep the spindle in and out thing in mind along with the battery negative cable removed..thanks for the info
Please post if that was the case. Someone else had a tear in the throttle body rubber boot that was causing the issue. Hope it gets worked out!
@@jamesc.3524 I will let you all know....whatever I find...I know I caused it so I’m thinking I knocked a hose seal loose behind the plug wires...
Okay hear this. Maybe you have some advice. I have a 2004 Cadillac deville. 1. It self accelerates. Not by much but still. 2. I absolutely cannot have the MAF sensor plugged it. If it is plugged in, it tries to kill my car. 3. It’s been doing the rpm ramping forever. Only recently is it getting worse. So I bought this part. Now I’m curious to know if after I replace it, my car will start to need the MAF sensor to be plugged in. 🤔
I wouldn't think so. See if fixing to idle air control solves your problem. If it does, then plug in the MAF sensor and see what happens.
How long do you disconnect the battery for
Honestly I can't remember, maybe a minute or 2 just to be safe.
I've been having the same issue on my 04 DeVille 140k I can't take it anymore (especially since I'm straight piped). How did you manage to unscrew those screws holding the IAC valve!? I've tried with many screw drivers always gave up. I have time this weekend and want to see if this Finally lowers my idle I just haven't been able to unscrew the IAC.
ATG on mine it was a bolt head 6mm or so. If you are looking at a screw head someone other than the factory put it there. Good luck, sorry i couldn't be more help.
Maybe try tapping on the (phillips) screw driver end while turning it, making it act as an "impact wrench". This is useful for getting off really tight screws.
Thank you
Rich, Glad i could help!
Ok so I've been having idling problems. I bought idle control sensor it was bad I exchanged it for another and guess what it was bad too. So I put the 3rd one on but it didn't help. Now my car stays idled so high it's hard to get it stop and when I let my foot off the break my car will take off shifting up till over drive. I'm also have transmission problems that I just learned could be from the high rpms. It is hard shifting when it decides to shift. Also slipping in and out of gear when in overdrive. Please help!
Tricia, what kind of car do you have?
Thank u parts are in the way
Very welcome!
Did u say 2k rpm idling I'm at 650/600 rpm
Yes I did. However your problem could be the opposite of the one I had. Your idle air controler might be stuck closed instead of open, limiting what your idle RPM is
Whats the normal idle rpms for this model?
After initial start up 600 ish rpm in park.
James C. Thank you.
@@jamesc.3524 ..my 03 Deville.. ruff hi rpm start, after about 90 seconds it comes down but about 675 too 725 was 625 / 650 when I got it two years ago... any help please? I will clean mine see what happens, I didn't know about battery reset.. any I Need a new water pump belt. Thank you for posting Cadillac information!
@@robbob5973 Did you end up fixing it?
@@TATTDIS... no.. I still chasing it.. vacuum leak I believe...ty !
I’m driving at 70 mph and my rpms are in 3,000 :(
That's a problem.... what is it at idle?
Dial out to lower
Correct
My 2007 Tahoe idles at 2000
Yeah...you may want to take a look at that. Seems a lite high...lol
Yup I called my friends mechanic and he told me to disconnect the battery for an hour and than connect it again and turn it on and it worked.
@@jamesc.3524 What causes it do to this in the first place, causing you to have to disconnect the battery to reset the idle rpms? Thanks.
@steveandrews8301 GM Engineering! LOL, no idea.... in all seriousness though, disconnecting the battery from the car is the only true way to get a reset on the electrical system.
@steveandrews8301 Anything controlled by a computer has the capacity of crashing and needing to be reset...look at MS Windows, lol. To answer your question, though, I have no idea why these things happen, but I know why they do. That's why i am a fan of older car / truck platforms that have less reliance on computers or none at all.
Thanks
Thanks brother
Glad to help!
Thank you
Your welcome!