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Unread 08-16-2011, 08:38 PM   #16
Bulldogbuggy
Registered User
1991 YJ Wrangler 
 
Join Date: Jun 2011
Location: Athens, GA
Posts: 24
Did it! Don't know what did it but whatever you guys told me to do WORKED!
Then I found a gas leak at the injector where I got one of the o rings in a bind and pinched it. Replaced it and now no leak JEEP runs!
Now to the new problem!
Now it hesitates when I press the gas and I have an oil leak at the valve cover(gasket) gonna replace the gasket!
May move over the plug and wire set from my old engine (just put them on) not sure what could be causing the bogging down.

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Unread 08-16-2011, 09:23 PM   #17
oldtime_ironman
Web Wheeler
1991 YJ Wrangler 
 
Join Date: Dec 2010
Location: 14304 Niagara Falls, NY
Posts: 2,540
Great! That will make it a lot easier to figure the rest of it out!

Questions:

Are there any codes stored in the computer?

Is all the vacuum hooked up OK? No leaks? Leaks can cause all kinds of funky weird stuff.
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Unread 08-16-2011, 09:26 PM   #18
oldtime_ironman
Web Wheeler
1991 YJ Wrangler 
 
Join Date: Dec 2010
Location: 14304 Niagara Falls, NY
Posts: 2,540
Great! That will make it a lot easier to figure the rest of it out!

Questions:

Are there any codes stored in the computer?

Is all the vacuum hooked up OK? No leaks? Leaks can cause all kinds of funky weird stuff.
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Unread 08-17-2011, 06:17 AM   #19
nzpete
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1995 YJ Wrangler 
 
Join Date: Nov 2010
Location: daleville, AL
Posts: 133
I'd also replace the fuel filter, if you haven't already.
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To me, RC is kind of the Harbor Freight of springs. Sometimes you get a good deal and sometimes you don't.
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Unread 08-17-2011, 06:44 AM   #20
dodger889
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1989 YJ Wrangler 
 
Join Date: Jan 2009
Location: mi
Posts: 4,161
Fix leak then test again. Even the smallest fuel leak could cause a problem.
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A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
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im just cheap, and cheap makes you creative.
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Unread 08-17-2011, 08:43 AM   #21
Bulldogbuggy
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1991 YJ Wrangler 
 
Join Date: Jun 2011
Location: Athens, GA
Posts: 24
Fuel leak fixed, vacuum lines all hooked up, now I am installing new valve cover gasket! Also gonna swap out throttle bodies to see if it is all the gunk built up on this one! Hell I got a whole other engine to rape and pillage! Thanks JF!
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Unread 08-17-2011, 08:52 AM   #22
oldtime_ironman
Web Wheeler
1991 YJ Wrangler 
 
Join Date: Dec 2010
Location: 14304 Niagara Falls, NY
Posts: 2,540
Quote:
Originally Posted by Bulldogbuggy View Post
Fuel leak fixed, vacuum lines all hooked up, now I am installing new valve cover gasket! Also gonna swap out throttle bodies to see if it is all the gunk built up on this one! Hell I got a whole other engine to rape and pillage! Thanks JF!
Gunk in the throttle body will do it. Whatever one you use, you should get some solvent and a brush, and clean it out real good. I bet you'll be surprised how good it works. I just found out yesterday that the IAC is working all the time when its running - not just when it starts!
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Unread 08-17-2011, 08:31 PM   #23
Bulldogbuggy
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1991 YJ Wrangler 
 
Join Date: Jun 2011
Location: Athens, GA
Posts: 24
And DONE running great I mean great no shake, shimmy, hesitation, lull, bogging down, no check engine, the Maint REQ. Light comes on occasionally what does that? When it does come in there is nothing different happening just running awesome Need some gear oil too! Had the rear drive shaft out and lost a good bit while I was pulling it to the house when I got it.
Got a block with good head gasket, and all the old crap of my other engine! The crank needs to be turned (spun bearing) willing to part the whole thing out. Let me know I will give you my contact info! I am in eastern north Carolina will ship you pay for it!
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Unread 08-20-2011, 11:14 AM   #24
Roadyy
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1994 YJ Wrangler 
 
Join Date: Mar 2010
Location: Down South
Posts: 1,591
Check for codes and I'll bet you get an O2 sensor code. Either the sensor is going bad or you have a small exhaust leak somewhere causing a bad reading. Replace the sensor which is just under the passenger door in the down pipe and see if it comes back later. If so then check for exhaust leak or clogging cat.
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