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ltkaknm
September 20th, 2006, 05:07
Hello all,

I am thinking about replacing my fuel injectors and was wondering if there was any preference out there? I have a 90 I6 4.0 with 186k. Replaced one last year, but just thinking it might be time to put in new ones.

Thanks,

LTK

RichP
September 20th, 2006, 05:45
Do a search on five oh motor sports. It's where I bought mine last january.

sjx40250
September 20th, 2006, 05:47
Fivemotorsports.com and do a search.

XJING
September 20th, 2006, 06:24
The reason to go with ford injectors is they have 4 holes at the bottom of the injector, Theory being that this helps atomize the fuel a bit better as it goes into your combustion chamber, Can't say it does or it doesnt, most people do the change out when they need injectors so any upgrade from crappy ones is a good upgrade. Good Luck

Pigpen
September 20th, 2006, 06:36
As apersonal opnion i really like the ford 5.0 liter ininjectors, you can use the same o-rings as AMC (use new ones, don't reuse your old ones). they cured a weeping problem and seem to have a better "seat of the pants" increase in throttle responce.

I used a set from the junkyard from a crown vic and the price was real good. (threw them in the bottom of the tool box).

You won't be disapointed with the upgrade.


Lee

TiRod
September 20th, 2006, 07:48
The yellow top 18 pound ones. Lots of Fords come with lesser - grey is 14 pounds. fiveo has a good site and are good people to buy from.

Johnny V
September 20th, 2006, 09:07
With 186K miles the injectors are due for replacement! Did mine a couple years ago on my '89

As mentioned above I purchased from fivemotorsports but purchased through ebay as they have a store there and cheaper prices than their website:

http://stores.ebay.com/fuel-injectors_JEEP-Fuel-Injectors_W0QQcolZ2QQdirZ1QQfsubZ17QQftidZ2QQtZkm

The Bosch 19 Pounders are the injectors for your jeep.

http://cgi.ebay.com/ebaymotors/JEEP-Cherokee-4-0-fuel-injectors-NEW-TAKE-OUTS_W0QQcmdZViewItemQQcategoryZ33554QQihZ019QQite mZ8046066462

jeep4me
September 20th, 2006, 18:54
Here: http://tinyurl.com/od9bu . You want the "yellow top" 19lb injectors for a 5.0L (commonly on Mustangs). Got my set of 8 shipped to the door for $85 a year ago, prices look to be the same these days as well ;)

Johnny V
September 20th, 2006, 19:40
Nice Find!

mrbill3
September 20th, 2006, 21:22
+1 for fiveomotorsports. I bought mine (Bosch 19lb. yellow tops) from their Ebay store about a year ago. Shipped and delivered quickly and came with new o-rings. Made a huge difference in the way tho old 4.0 runs.

jeepsrock
September 20th, 2006, 22:22
i got mine from here.

http://tunertoys.zoovy.com/category/fuelinjectorsstock.jeep.cherokee/

tuner toys.
pete

CreativeSN
September 20th, 2006, 22:39
Are these the right ones? Are any modifications necessary to anything or do they just plug in ( I have a '91 4.0HO)? Where in the power band is the improvement? Do they improve fuel economy at all? I wounldn't imagine they would because they are still the same fuel rate but what do I know. As long as it doesnt make fuel economy worse!
http://i19.ebayimg.com/01/i/06/2d/a1/c5_1.JPG
thanks

BskisXJ
September 22nd, 2006, 19:05
I got 6 new 19lb. ones off EBAY from Auctionfrontier, $10ea. They were Tomco brand.

Slo-Sho
September 23rd, 2006, 05:56
I'm using fuel injectors I got off of a 1995 Lincoln Town Car (4.6). Works awesome and I have two spares. :)

sjx40250
September 23rd, 2006, 06:15
I bought the "Green Meenies" 20lb. Your should check which year you have. I think Dyno has a chart of injectors vs. year. I know the HO engine uses a higher lb than the 88-90. Like I said in other threads, huge difference in my 90, but I had to use my MAP adjuster to turn down the voltage and go to a hotter plug to pass emissions - 5.45V to 4.65V.

BTW I also have 185K on the clock with Borla Exhaust from the head back with stock K&N.

Saudade
September 23rd, 2006, 08:36
Unless you need them in a hurry, I'd stick with eBay. I got a set of 8 Ford 19# injectors delivered for about $55. There's plenty listed so you don't need to jump on the first one.

They work great. Haven't noticed a mileage improvement long term, but seem to have much better throttle response. Mine's an '88 4.0 with about 165K.