Jeep Wrangler TJ - Rough Idle/Vapor Lock (Heat Soak) CHEAP FIX
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If your 2000-2001 Jeep 4.0 engine has problems in the heat and it idles rough or hesitates, it is most likely a heat soak related issue.
Supposedly there was a recall for the 4.0's from 2000-2001 because the exhaust manifold gave off so much heat that it was vaporizing injector 3 and causing a misfire, which leads to rough idle, hesitation, and poor performance. If you ever run your Jeep for a while, park it in a parking lot, come back out, start it up and it runs rough, that is heat soak. After cooling down for 20 or so minutes, it may go away. This method will prevent that rough idle from ever happening.
The fix for this is relatively simple, cheap, and effective. There are several ways to fix this problem, but for me I bought a $50 heat shield kit from Amazon which completely removed the issue for me. Another excellent option is having a hood louver as it allows heat to escape quicker, however for me, I needed the heat shield as well.
Heat Shield Kit:
www.amazon.com/Design-Engineering-010378-Engine-Injecter/dp/B015NOKWQY
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@BillyTpower 4 жыл бұрын
I applaud you for tackling this job on your own. a couple of tips that might prove helpful in the future... always stuff a rag down the intake when u remove the throttle body. second tip is to spray some penetrating oil on rusted looking bolts (ie. anything near the exhaust) the night before, pb blaster or liquid wrench works well. another trick I used on bolts I suspect are gonna be a bitch is to compression shock them lightly, after they have soaked all night or as long as u can leave it then try to loosen bolt working it back and forth little by little.... hope this helps next time
@ArkansasOffroad 4 жыл бұрын
Billy T appreciate the tips! Learned a lot doing it my first time.
@chrisraley4252 5 жыл бұрын
I am a new TJ owner , I appreciate your videos. Your Jeep is one of the nicest out there. Subscribed !
@ArkansasOffroad 5 жыл бұрын
Thank you!
@MonDakLiving 5 жыл бұрын
Another great thing to do when puttin in your bolts to aluminum is try adding a little bit of anti seize to the end of the bolts, great video brother keep up the great work!
@ArkansasOffroad 5 жыл бұрын
Thanks for the tip! Wish the guy before me would have done that!
@ryan.vision 5 жыл бұрын
Nice video man, appreciate the heads up on this. Where I live in CA it gets well over 100 degrees in the summer so I might need this too. I didn't end up getting a TJ but I bought an LJ a few days ago and it has the same motor.
@ArkansasOffroad 5 жыл бұрын
Nice! The heat shield that was on mine was Jeep's attempt at the recall (the gross one I removed in the video), but it wasn't enough. The hood louver really helps too. Good luck with the LJ. Those are sick!
@zombi3man90 4 жыл бұрын
Just wanted to say I love the videos and keep up the great work! Also wanted to say that I noticed where your bolt snapped that you can see where it was rusted together at the top of the post it bolted into. The best thing to avoid this in the future is a can of PB Blaster. Spay a little on any bolt that might be seized from rust and let sit for 5mins(longer it sits better it works) and you usually dont have that problem unless it's too far gone lol.
@ArkansasOffroad 4 жыл бұрын
Thank you! I appreciate the tip! I probably just rushed into things
@AA_TERRAIN 4 жыл бұрын
I usually never comment on videos but I’ve been having that problem on my 2004 tj and I was about to take it to my mechanic to begin some major engine rebuilding to find the issue. Great video and great Jeep. Your Jeep is similar to mine and I can relate to a lot of your videos.
@ArkansasOffroad 4 жыл бұрын
Thank you! I hope this will help you. The good thing about these Jeeps is you can do a lot of maintenance yourself. Just look it up on KZfaq. That's how I learned.
@markrequena8993 2 жыл бұрын
Aaron , did this step help you to eliminate or reduce the issue? I am experiencing the same issues and I was about to to it to the mechanic until I came across this. Your feedback is greatly appreciated
@AA_TERRAIN 2 жыл бұрын
@@markrequena8993 It didn’t really help for me unfortunately, if anything it helped a little bit but I didn’t cut the hood scoops, currently in the process of a v8 swap so didn’t bother to continue testing. Hope it helps
@mr.bluegrass9723 5 жыл бұрын
nice clean job that you did , also it's a nice looking jeep.
@ArkansasOffroad 5 жыл бұрын
Appreciate it!
@SanjeevKumar-us7hu 5 жыл бұрын
Nice video..i watch your each and every video..love from india
@ArkansasOffroad 5 жыл бұрын
Thank you!!! That means a lot.
@victorvillalobos1352 5 жыл бұрын
Great vid..
@warriorengr 4 жыл бұрын
Thanks Bro! Sorry your mount bolt broke!
@zanebrown4750 4 жыл бұрын
Do you have a clip or video of your Jeep idling before you started this project?
@gscrawford74 5 жыл бұрын
i miss my TJ much easier to work on than the JK
@PoppaBeansManny 4 жыл бұрын
I’ve recently experienced this with my Jeep it was really hot and when I turned it off it and back on again it was idling really bad.
@msuee96 3 жыл бұрын
I added a hood louvre back in 2019. It helped a bit. Then I wrapped fuel lines and cut up another DEI product to wrap the rail and injectors. I don’t get codes anymore but it didn’t solve my issue. Mine still runs rough for a time if it’s above 90° and I stop for a while without raising the hood. I bought a similar kit. The manifold heat shield is flat without contours like yours. I’m about to install mine but I think I will pull the fuel rail so I can clean everything and replace the O-rings, I’m about to turn over 100K miles.
@ArkansasOffroad 3 жыл бұрын
Nice! Hope it works!
@georgesantiago6005 4 жыл бұрын
Advise like used to do on carbs, betuin the intake and head built a shit to desapait the heat.
@Themoneymaker0129 5 жыл бұрын
You should come out with some merch man, would love to support the channel. You have one of the cleanest TJ's i've honestly ever seen. Do you have an instagram?
@ArkansasOffroad 5 жыл бұрын
Appreciate it man! IG: @grizzy.gram
@Themoneymaker0129 5 жыл бұрын
@@ArkansasOffroad Just added you brotha! @maroboi_0129
@2dollarbill3 4 жыл бұрын
I have just completed a 4 hours ride and I was having this exact problem. After driving we would stop for pictures, shut off the engine and on restart, rough idle and P0303, P0304 which is a misfire in cylinders 3 and 4. Looks like I am going to buy this kit.
@ArkansasOffroad 4 жыл бұрын
The hood louver also helps tremendously!
@2dollarbill3 4 жыл бұрын
So far so good. No more errors!
@dennisdoyle8666 2 жыл бұрын
Gidday mate ,what is the manifold heatsheild part No.? Can't find it on ebay.
@DumbCarGuy 2 жыл бұрын
2 yrs later. What do you think about that aluminum foil fix so far?
@artboyee 5 жыл бұрын
I use ethanol free gas. It has a higher boiling point and doesn't vaporize. It's hard to find but I'm lucky the station down the road sells it for recreational vehicles.
@lstruggy 4 жыл бұрын
artboyEE I have this issue the vapor lock as well been using regular unleaded fuel since day 1, I started using premium gas last night do u think that would help me prevent vapor locks at all?
@tonydimeo7046 5 жыл бұрын
This is a random question lol but where did you get your brown back pack that is in your other videos? Love all your videos and you really do have one of the nicest TJs I've ever seen.
@ArkansasOffroad 5 жыл бұрын
Thanks man! There's a video on my channel about my "DIY Trasharoo" if that's what you're talking about. But that one was a green hiking backpack. Recently, I just bought a Trasharoo from Amazon. $50.
@ringenberg2 5 жыл бұрын
I installed that same kit and I still get heat soak. There was a TSB on the heatsoak issue and a MOPAR kit similar to that was out on but it was just that stupid shield that was there before you started. I’m about to do a Poison Spyder vent and two 12” radiator fans underneath to fix it.
@ktmracer100 3 жыл бұрын
Did that fix your issue?
@jonathansellers4072 5 жыл бұрын
So far, has this solved the problem?
@landonjones9940 5 жыл бұрын
Hey man, my Jeep is that emerald green metallic like yours was, but I’m in love with the commando green color. About how much does it cost to repaint that color? Thanks brother!
@ArkansasOffroad 5 жыл бұрын
You could get a million different answers depending on where you live, if a professional shop does it, or if a local guy does it. I'd expect something like $1500-$2500.
@thelzmovement6480 4 жыл бұрын
What kinda flares are those
@oriongray7712 4 жыл бұрын
Any kits for the 2.5L? I'm having the same issues but everything I find online is about the 4.0
@jerrywhalen2100 4 жыл бұрын
I would try cutting it down to fit.
@abdubitar960 4 жыл бұрын
How is the update on the product besides the sheet that goes on the manifold, I was reading the amazon reviews that it makes it worse? The wrap on the fuel injector rail , does that really help , I have had it on for a good minute and today I started my jeep in the heat and it was doing that it barley wanted to run with the heat shield kit
@jerrywhalen2100 4 жыл бұрын
So what do we use then?
@hannah6536 5 жыл бұрын
I have this problem with my 1996 TJ. If i've been running it for a while it won't start up again for about half an hour. I'll probably get one of these kits but i'd love to know why this is happening because it never use to be an issue. Do you think changing the injectors would help?
@ArkansasOffroad 5 жыл бұрын
I doubt that would do anything. Your exhaust manifold is vaporizing the fuel in your injectors. Most likely cylinder 3. Replacing it wouldn't do anything. The hood louver + the shield kit fixed it up for me. You maybe could just do the shield kit and get away with it.
@tommyr95 4 жыл бұрын
Good stuff! I didn't see a follow-up video so is it safe to assume that this resolved the issue? My '01 has been doing this and it'd be great if this resolves it!
@ArkansasOffroad 4 жыл бұрын
Yep! This has worked perfectly with me. The hood louver helped tremendously as well.
@nonsequitur807 2 жыл бұрын
hope you paint all those parts b4 reassembly
@KB-bf7qi Жыл бұрын
I installed the heat shield kit and replaced the injectors. Still the same condition. Where do I go from here ? BTW, also cleaned my throttle body and replaced the TPS.
@ArkansasOffroad Жыл бұрын
I would say the hood louvers. I’ve heard great success from people doing that.
@jhatfield2755 3 жыл бұрын
Same problem on my xj
@isachar2013 3 жыл бұрын
What's you jeep color code men?
@StuPedassol 3 жыл бұрын
Maybe you can throw a dabba JB Weld on the end of that bolt before you reinstall it.
@BackyardSniper 5 жыл бұрын
I used the same kit and still have heat soak......
@ArkansasOffroad 5 жыл бұрын
Weird. Do you have a hood louver too?
@D.RumShaker 4 жыл бұрын
Try upgrading your injectors to 4 or 12 hole, it should help significantly.
@bigdiggabe8865 5 жыл бұрын
What part of Arkansas are you? I live in northern Arkansas near the border of Missouri
@rosseldridge6395 5 жыл бұрын
I believe he is from the NW corner near Fayetteville
@ArkansasOffroad 5 жыл бұрын
Bentonville area. Northwest corner.
@bigdiggabe8865 5 жыл бұрын
Arkansas Offroad nice, if your ever this way I know a few trails over here just tell me
@mojotuner 2 жыл бұрын
Do you notice any difference with the spacer ?
@ArkansasOffroad 2 жыл бұрын
I don't think so. If so it's very small
@sinnedam 5 жыл бұрын
How are you liking those wheels? I’ve thought about picking some up.
@ArkansasOffroad 5 жыл бұрын
sinnedam they’re great. Can’t remember the backspacing, but I love the stance I get out of them.
@sinnedam 5 жыл бұрын
How long have you had them? Saw some reviews that said they rusted easily.
@ArkansasOffroad 5 жыл бұрын
@@sinnedam THey were on there when I bought the jeep. Haven't seen any rust at all and it's been close to 2 years.
@rbyronson2426 5 жыл бұрын
Does the throttle body spacer help or not?
@ArkansasOffroad 5 жыл бұрын
I'd say no honestly. I'm planning to remove it. I don't see/feel any performance gains.
@rbyronson2426 4 жыл бұрын
Thanks for the information, Your videos are helpful.
@ArkansasOffroad 4 жыл бұрын
@@rbyronson2426 Glad to hear it!
@crayfishroll 5 жыл бұрын
Hey quick question I'm running a 2002 tj with a 4.0l. I'm having the same issues you described and it gets so bad it stalls. Did the 02's have the same issue with the fuel vaporizing from that injector?
@ArkansasOffroad 5 жыл бұрын
Hmm. Haven't heard of issues coming from the 2002's, but that doesn't mean that there aren't any. Does it happen to you in the heat?
@brehbreh5346 5 жыл бұрын
I have an 03 tj. Same problem. Same fix. There's an official part you can buy OEM. Idk where to find it but I have seen some information on it.
@crayfishroll 5 жыл бұрын
@@brehbreh5346 thanks I think it may have been my fuel pump because that was the last thing I replaced and It was a cheap eBay one so I found an oem one and going for a test drive later. If that doesn't work then I will try ordering this part to fix this issue
@MrKellyvevo 5 жыл бұрын
Pretty much all 4.0s have it, becuase they all have the same intake manifold. I have a 2004 LJ. And here in vegas its July and so far its been 108° almost everyday so my jeep hates me. At redlights when it turns green and i push the gas the jeeps dies for a second then comes back. And of course if i go inside a store and come back its sounds like im starting a boat.
@brehbreh5346 5 жыл бұрын
@@MrKellyvevo have you tried the fix in this video with the heat shielding? I did and it dosen't seem to have worked. Wondering if you know a work around
@cesararboleda3974 5 жыл бұрын
please, what is the color of your tj
@ArkansasOffroad 5 жыл бұрын
Mopar Commando Green. It's on the JK's.
@cesararboleda3974 5 жыл бұрын
@@ArkansasOffroad I have a yj 1987 and jTj 2003, thanks, Greetings from Peru.
@ArkansasOffroad 5 жыл бұрын
@@cesararboleda3974 Awesome! Thanks for watching!
@steveblankenship2413 5 жыл бұрын
is that a rampage frameless top?
@ArkansasOffroad 5 жыл бұрын
Steve Blankenship yes sir
@steveblankenship2413 5 жыл бұрын
@@ArkansasOffroad i have one on my 92 yj and love it, iam picking up a 2001 tj fri. and will put one on it.
@hillrodfilms5262 5 жыл бұрын
Bro you need some Redbull or coffee !
@ArkansasOffroad 5 жыл бұрын
I know lol. I just woke up when I filmed that.
@13Tainy 4 жыл бұрын
Where you buy your bikini top of you jeep “!! I like
@jerrywhalen2100 4 жыл бұрын
Best top has nice ones for cheap. 3040 bucks
@scavenom2008 4 жыл бұрын
This doesnt work that great and you will have this issue despite the protection because is not enough and heat still soaks the fuel rail and injectors. Bottom line it was pretty stupid to have both manifolds on the same side....I can only imagine how bad it is for a carburetor on the 4.2. This engines were very long in the tooth and they still pushed them for another 7 years. People argue this engines are reliable but why wouldn't they be if they are a detuned motor only producing 190 tops....pretty ridiculous. If you have pre 2000 models you got fucked twice because you will have a distributor to fuck with along with other goodies like a bad alternator (sub 100amps...laughable) also the exhaust manifolds on the older models were total trash and used to crack like a mother.... ...anyways happy wheeling 2003 jeep 4.0
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