jeep 4.0l base idle adjustment (same process for most early EFI)
ฝัง
- เผยแพร่เมื่อ 8 ส.ค. 2024
- any contributions are greatly appreciated
cash.app/$Tbeyer92
patreon.com/Thomasbeyer
taking you through the process I use to set minimal throttle position on early fuel injected engines. this is my supercharged 4.0 jeep grand Cherokee you would do the same process with your small block 318-360 magnum powered Dakota and ram trucks as well as most EFI vehicles. - ยานยนต์และพาหนะ
Deadset Legend 👌 I’ve been chasing a random stall issue when coming to a sudden stop for months now on my Cammed Jeep. Can’t believe it was that simple 🙏
Thanks for posting this. I have been chasing an idle speed issue in my '01 TJ, which has started stalling from time to time. I will definitely give this a try...
89 xj 132xxx, thank you thank you. cleaned it, it's better, but you saved me the trouble of making my own screw.
Thanks so much for this video! My jeep is having the same issue and trying this now.
Thank you it ran better after I did what you said.
That's awesome. Thank you.
With love, keep up the good simple instruction. God bless.
Thank you
thanks man! been having high/low rpm fluctuations will give this a shot maybe up the rpm on my girl to sound like she's alive and not about to die on me
Awesome video. Thanks
Thank you
Would this problem cause higher idle and stalls when trying to reverse or 1st
Omg thanks so much!!
Would I need to do this when installing a 4.0L head on my 258 bottom end I wend efi out of my 2000 tj but I have a sputter on take off then once I get over 2k rpm it seems to be a bit better and idle seems a bit rough nothing crazy.
My 2006 jeep wrangler I have cleaned the throttle body I have a new idle air control I put on a new map sensor and the other idle sensor on the throttle body . I put it all back together some times it idles at 1200 sometimes at 600 and sometimes surges up and down from 600 too 1200 usually when I turn on the ac never get a check engine light any help would be great
im no expert but that sounds like a vacuum issue
I was wondering if it would be possible to turn the screw around so you don’t have to keep pulling the throttle body off. My 92 XJ idles at 500 rpm and it hates starting and always stalls out when cold.
You could always use feeler gauges between the stop and the throttle lever and see how much it needs to move so you only have to do it once.
Hey have a couple quick questions on tuning the computers in the 96-98grand cherokee 4.0. Can you shutoff all auto codes for the trans have a 97 with a ax15 swap and wondering if i can get the auto computer to stop trhowing codes
Thanks
I've never tried that but an HP tuners in the jtec ECU you can change transmission type as well now I've never had a reason to do that but that may also be part of the solution. You can shut plenty of codes off but I can't be sure that you have the ability to shut every code you need to off.
Put feeler gauges in the space get it to idle correctly then do the math .010 is about half turn on the screw
Good tip
Is that a stock T.B. on your Jeep or did you do anything too it ?
I have a pretty much stock 97 Jeep G.C. with the 4.0. ( Home made CIA ) which really woke up the Jeep, high flow cat. & muffler. Like an idiot I hogged out the bottom of T.B. too match the intake. I think it was like 2 mm but CAN'T REMEMBER, It came out great but I lost my LOW END. Mileage didn't change it still sucks but she pulls as good as a 4.0 will in the higher RPM range now.
Thinking about getting another T.B. & putting it back to stock & another thing she only ever ran good on 89 Octane since new. 87 would ping up hills & it had pretty much no power, worse on gas also. No matter what I did too it she ran terrible on 87 since new, dist. plugs, wires, colis, dist. cap & rotor, ect... I use nothing but NGK parts now but she still hates 87 Octane ? My 99 Cherokee with the 4.0 didn't care about the grade of gas, CIA or anything I changed on it always ran just the same, WEIRD.
Never had any problem with idle, I keep up on maintenance BIG TIME with this Jeep. It has 196,545 miles on her. Also put slightly bigger tires on it 235/75/R 15's it just looks better.
I liked when you popped your hood & said " YOUR'S WON'T LOOK LIKE THIS " LMAO.
Thanks for the Knowledge Sir, Henry from N.E. PA.
That's strange that blending below the throttle blade hurt bottom end. Newcomer racing did an intake manifold shootout and they saw a loss in power when they went from a stock throttle body to a 62mm but when they went larger than 62mm they picked up power. Shape is important but that's strange. I think there is a slight cam timing difference between those years and so far out of all the jeeps IV tuned non of them have been exactly the same. Different timing and fuel tables. So idk on the 87 octane mines boosted so I run 91-93 to play it safe with timing. If you have a good scanner you can check the fuel sync angle that could possibly effect some fuel efficiency.
And yes that is a stock throttle body
@@thomasbeyer Thanks for the replies. Yes I also thought it was strange it lost low end especially from what I've heard about doing this. Might throw some 4 hole injectors in it & see what that does.
What map sensor your using?
Factory Honda 1.75 bar
What about that boost set up?? Tell more!!
th-cam.com/play/PL0mA-gr4Rg67TK1moczB-ZHtYdWKr7Kk_.html
Check out the build it's all on there.
@@thomasbeyer can you keep the AC with your set up?
@@BradMillsOK nope no more ac
I replaced the TPS on my 03 Wrangler Sport and it made matters worst. I don't know what the heck at this point.
What's it doing?
@@thomasbeyer A few days ago I noticed my Jeep was losing power during acceleration, so I had to downshift gears to pickup speed. I did the self diagnosis and got code P0123. I replaced the TPS sensor and it only made things worst. I can barely go 20 miles per hour now. The engine sounds and accelerates just fine when I'm in neutral, but I start shifting gears, and it doesn't go too fast.
@@hThorman123 have you checked fuel pressure and do you have a scanner?
@@thomasbeyer I do have a scanner. How do you check for fuel pressure? Should I replaced the fuel filter?
@@hThorman123 idk exactly on a 2003 but my past of the 4.0s have a test port on the fuel rail that you can attach a fuel pressure tester gauge to. Most times there's enough fuel flow for neutral and when you go down the road if the filters clogged fuel pressure starts dropping off and it runs very lean. There's a good chance the filters clogged but if you can locate a fuel pressure tester you can check it you'll just have to check it while going down the road under load.