The Definitive Injector Swap HOW TO - Page 43 - JeepForum.com

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post #631 of 675 Old 05-22-2014, 08:32 AM
MountainMan303
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1995 ZJ 
 
Join Date: Jan 2014
Location: Boulder
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Here we go again. With my recent problems with the 703's that I bought off of Ebay, I was going to take them out again the other day, when I got a call from the seller, saying that the 703's they have recently sold have been recalled, and I was overnighted some new ones. If anyone has bought injectors from "injectordyne" off of Ebay, you might want to make sure yours are running well and not screwed like mine were. His reasoning was that they were stored improperly.

That being said, what I was overnighted were injectors "Bosch 0280155784". These also came with adapters to fit my plugs my '95, seeing as though they are a different set-up. Has anyone used these yet on their 4.0L? Wondering if I should tell him to send me different 703's, or just try these new ones.


1995 ZJ Grand Cherokee 4.0L, 3.5" Iron-Rock Benchmark kit, 31x10.5x15 Duratracs, 15x8 Cragar Soft 8's, Front and Rear Adjustable Tracks, Up-Country Skids
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post #632 of 675 Old 05-22-2014, 09:04 AM
PolkaPower
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They are the same minus the connectors according to this guy.

Quote:
Use Dodge Neon injectors. P/N 0280155703 for 98 and older XJs and P/N 0280155784 for 99-01 XJs. The 703 injectors can be had from any 95-97 Dodge Neon, Caravan, Grand Caravan, Stratus, or Plymouth/Chrysler Breeze, Voyager, Grand Voyager, Cirrus, or Sebring with the 2.0L or 2.4L 4 cylinder engines. The 784 injectors can be had from any of the same vehicles listed above with the same motors listed above but from years 98-2000ish.

There is no difference between the 703 and 784 injectors other than the connectors. All of their specs are identical. The connectors for the 703 are the older EV1 style which
every XJ before 99 had. The 784 has the newer EV6 style connector that the 99-01 XJs have.
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post #633 of 675 Old 05-22-2014, 12:53 PM
MountainMan303
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Thanks for the info Polka. I guess I'll be a guinea-pig this weekend....I believe this will be the 6th time I've done this in the past couple weeks.....


Quote:
Originally Posted by PolkaPower View Post
They are the same minus the connectors according to this guy.

1995 ZJ Grand Cherokee 4.0L, 3.5" Iron-Rock Benchmark kit, 31x10.5x15 Duratracs, 15x8 Cragar Soft 8's, Front and Rear Adjustable Tracks, Up-Country Skids
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post #634 of 675 Old 05-28-2014, 04:08 PM
hm_dart
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1998 ZJ 
 
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Great swap

Zander,
Great thread. My 98 ZJ 5.9 is running better than ever with the 703.
One more confirmation for your list.
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post #635 of 675 Old 05-28-2014, 04:14 PM
MountainMan303
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Quote:
Originally Posted by hm_dart View Post
Zander,
Great thread. My 98 ZJ 5.9 is running better than ever with the 703.
One more confirmation for your list.
Same here. 4.0L with the 784's finally feels healthier than it has in a long time.

1995 ZJ Grand Cherokee 4.0L, 3.5" Iron-Rock Benchmark kit, 31x10.5x15 Duratracs, 15x8 Cragar Soft 8's, Front and Rear Adjustable Tracks, Up-Country Skids
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post #636 of 675 Old 07-05-2014, 06:27 PM
BadJohnny
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2004 TJ Wrangler 
 
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I thought I would post here and ask. I bought a set of injectors from Precision Auto Injectors for my 2004 TJ. What they sent me was Bosch 0280 155 857. Anyone have experience with these in a 4.0L ?
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post #637 of 675 Old 02-20-2015, 02:49 PM Thread Starter
zander21510
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I updated the OP with some suggestions. I added some injectors that have been discussed in the later posts with flow rates for reference. I also fixed the flow rates for others...idk why they were wrong but I recalculated them and checked with a few different calculators. Hope this thread is still helpful!
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post #638 of 675 Old 03-13-2015, 10:55 PM
travisyoung
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i have aquick question if im getting new seals for the injectors what model do i look it up for? the car i got them from or my jeep? Thanks
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post #639 of 675 Old 03-15-2015, 08:43 AM Thread Starter
zander21510
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Quote:
Originally Posted by travisyoung View Post
i have aquick question if im getting new seals for the injectors what model do i look it up for? the car i got them from or my jeep? Thanks
Rebuild kits should be the same on both. They have kits all over ebay. Ebay is your friend
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post #640 of 675 Old 03-30-2015, 01:44 PM
RedRiverT
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1997 ZJ 
 
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97 ZJ, 2WD, 4.0, no lift, 235-15 Goodyear Wranglers (no adjustment by me to the speedo for the 235's)

After I hopefully got the problems corrected, I installed some re-furbed 703's. On the last fill up with the stock injectors I went 302 miles on 16.85 gallons (= 17.9 mpg). I drove a little on the next full tank before I put in the 703's, about 1/4 of the mileage. The next fill up was 354 miles on 19.35 gallons (= 18.3 mpg), but this includes what I poured out of the fuel rail and put in the mower gas can. I'm a little over halfway through the next tank.
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post #641 of 675 Old 03-30-2015, 02:30 PM
4LtrZJ
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Quote:
Originally Posted by zander21510 View Post
Rebuild kits should be the same on both. They have kits all over ebay. Ebay is your friend
This write up is now added to my "things to do" list. Great looking write up. I'm looking forward to it.

4.0L to Freedom
Crawllin' the Fort Worth Mixmaster
ZJ in rehab: http://bit.ly/1DQjcFB
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post #642 of 675 Old 04-05-2015, 12:49 PM
RedRiverT
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Follow-up to post #640: my next run, the first full run with the 703's, came out to 19.8 mpg. I wrote the mileage on the fuel receipt, so the numbers are right, but I don't know if I believe it. The hole in my method is that I fill until the handle clicks off, then go up to the next 5 or 10 cent level. I have not been filling it until it clicks off as soon as you pull the lever, i.e. it is absolutely full. I got my shoes soaked doing that the first time.

I'll keep track of a couple more fill-ups and assume any error averages out.

edit: I added gas today and the result was 18.6 mpg.
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post #643 of 675 Old 06-02-2015, 04:24 AM
montrosepatriot
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1996 ZJ 
 
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I did the 703 swap with my 4.0 at the same time when overhauling my 42RE (along with a Magnaflow converter replacing the clogged one that threw a P0420 code) - full tank (mine is a 2WD) maxed out @ 477 miles prior 2 the low fuel lite being triggered; im usually averaging 20 MPG with the 703s (stock 4.0L)...

At first I averaged 18.8 or 18.3 MPG after the swap (did a Seafoam repair) until getting 19.2; after 12,000 miles was where I ended up with 20 MPG avg - I have not used a stopwatch for 0-60 ETs yet...

I pulled the 703s out of a Dodge Neon which have been flushed and flow matched (InjectorRX in Houston, TX did the flush)...
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post #644 of 675 Old 06-08-2015, 07:05 AM
SpectralZJ98
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1998 ZJ 
 
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Did this about 2 years ago on my 98 ZJ, along with the intake swap. No cat, no O2 sensors (too lazy, and the engine needs overhauled anyway). I got my first set of injectors by raiding the Plymouth and Dodge Neons at PAP in Louisville. Had about 20 of them, and picked through them for the best of the lo. Be careful, the length on some of the models is NOT the same. The junkyard set has been going good.


About to order a set of remans from silvershot_platinum for the wife's 97 Laredo, maybe swap intakes while I'm at it. I've been wary of the Injectordyne ones. This is the link: http://m.ebay.com/itm?itemId=190827041197
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post #645 of 675 Old 06-08-2015, 12:35 PM
howdyratz
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I swapped in a set of 703's with new o-rings and filters...

My MPG decreased, oddly enough.

I couldn't tell you why, but I was getting 17.6 mpg average before, and now I'm getting 15.8 mpg.
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703 , 715 , ford , fuel injector , neon , swap

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