a_shirey

as long as they dont stay chrome i like em.

LittleBuddy

what color are they? black chrome?

jakbob

Maybe you should look at your cooling system. Vents are just bandaids.

NewKindOfClown

Careful you don't get banned again, Dr Deaththreat.

Didn't get **** done on my Jeep tonight cause my relief never showed up at work. I left 90 minutes late, and the shops were closed by the time I got home. Can't get the parts I need tonight. So now I'm finishing the tank install tomorrow, then gonna try to get the skid on Thursday. Next priority is the CB, and then two other things I wanted to do Thursday. Not gonna have time for it all cause everything just got pushed back a day...

jimmy21669

That is NOT what vents ate for....

I for one thought the ones you showed were too much.

NewKindOfClown

They're marine vents. Of course they cost too much. I do like how they look on the uni Jeeps, but I wouldn't get chrome.

jimmy21669

I didn't mean too much money...I meant gaudy.

jimmy21669

Vents are meant to keep ambient engine temperatures down and thereby prevent heat soak.

They do not effect your cooling system at all.

Fuel System - Hot Start Misfire/MIL ON/DTC's/Rough Idle

NUMBER: 18-031-03

GROUP: Vehicle Performance

DATE: Sep. 05, 2003

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 18-027-02, DATED SEPTEMBER 06, 2002, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A COMPLETE REVISION AND NO ********S HAVE BEEN USED TO HIGHLIGHT REVISIONS.

SUBJECT:
4.0L Rough Engine Idle After Restart Following A Hot Soak

OVERVIEW:

This bulletin involves the installation of a fuel injector insulator sleeve.

MODELS:
2000-2004 (TJ) Wrangler (Domestic and International Markets)
1999-2004 (WJ) Grand Cherokee (Domestic and International Markets)
2001-2004 (WG) Grand Cherokee (International Market)
2000-2001 (XJ) Jeep Cherokee (Domestic and International Markets)

NOTE: This bulletin applies to vehicles equipped with a 4.0L engine (sales code = ERH)

SYMPTOM/CONDITION:

Customers may describe a 20 to 30 second rough idle following the restart of a heat soaked engine. This condition may be most noticeable when the engine is restarted following a prior 10 to 20 minute heat soak in hot ambient conditions of approximately 32°C (90°F) or higher. This condition may be consistent with short city stop-and-go driving trips and can be aggravated by the use of fuel with a high ethanol content. Depending upon various conditions a MIL may occur due to DTC P0303 - Cylinder # 3 Misfire.

This condition may be caused by heat from the exhaust manifold that following engine shut down migrates to the area around injector # 3 and causes fuel vapor to form within the injector. This in turn may cause a momentary misfire of cylinder # 3 until the fuel vapor is cleared of injector # 3. The insulator sleeve lowers the injector # 3 temperature to a point below which the fuel will not normally vaporize.

DIAGNOSIS:

1. If vehicle exhibits a rough idle, and if a misfire of cylinder # 3 is observed following a 10 to 20 minute hot soak, perform the Repair Procedure.

PARTS REQUIRED

REPAIR PROCEDURE:

1. Cut insulator sleeve, p/n 56028371AA, to make two (2) insulator sleeves about 25-30 mm (1 in.) in length.

2. Install one sleeve around injector # 3, with the slit on the upward facing side of the injector. Install the other sleeve with the slit on the downward facing side of the injector.

3. Confirm sleeve is flush to intake manifold surface around injector.

4. Check injector # 3 wire and ensure that the injector is rotated to a 2 o'clock position (from driver's side of vehicle).

Hood vents can HELP alleviate these symptoms....also shielding injector 3 will.



BUT AGAIN...THE COMMON MISCONCEPTION IS THAT VENTS COOL YOUR ENGINE....THEY DO NOT!

yellaklein

wave your wand for me.. waiting on new radiator and parts to get in..

96xjclassic

Join the club! I bought that rear axle almost a year ago. You just have to commit to a project and stick with it! Lol.
Remember what happened last time you threatened someone. Temper, temper.
Lmao. I stole it.

96xjclassic

So.... Tim, how does the lift feel? Any drive-line vibes? I wouldn't know, I've only driven it once! For 15 minutes! Rear axle feel ok?

a_shirey

yella: i havent forgotten about the parts i want from you. i just havent had the time or money. in 2 weeks ill be able to if you still have them.

96xjclassic

This may be blasphemy, does anyone know anything about old 4 runners? I have a friend trying to sell her rig because it has a blown tranny. Any imput? It real nice and its a great price. If I can get ahold of a tranny or rebuild I might bite.

nowhres

What year is it? Front axles parts are ridic. expensive. The bastard Colby has an older one.

96xjclassic

1989, 4wd, 260,000 miles. Looks real nice. I haven't investigated properly yet.