It was a 4 cylinder car, we just swapped in a 5.0 5 speed.Ok what are we working on?
originally a 5.0 5speed?
1992, the harness is the same year. Stock ECU out of the 5.0 donor car. Couldn’t tell you how much air lol.. underneath the intake manifold, there is a vacuum hole that we capped. Pretty sure it goes to smog. Don’t think that’s the problem, but it’s something we did.Ok, what year car? What year harness? What computer? How much air is in the right front tire?
Didn’t find anything in it. I’ve looked everywhere online, and NO ONE has had a problem of 4000 RPM at idle. Not sure wth is happening.Here is some help to see if you missed anything, of course you need to substitute 92 stuff when it comes to wiring because 92-3 wiring are exclusive. Also 02 wiring is different between auto and stick.What exactly do I need to convert mine to 5.0
Okies folks it's time to make a junk yard shopping list! I have 2.3L 86 mustang LX 2.3 L with an automatic trans (13 screws no OD) I want to make it a 5.0 with Automatic (probably AOD because no computer)(stick is just sucky with me) I know I need a crossmember a K-member, the motor SEFI...forums.stangnet.com
then you can go through this checklist for the idle stuff.
a vacuum leak will also cause a high idle, the list shows you how to properly set base idle.
Bone stock, and haven’t quite checked for codes yet. I’m not a mechanic by any means, I’m 15 years old, so my dad has been helping me, but he’s one of those guys that just thinks if they cant figure it out, no one can, you know? So I’m trying to find out. We did do some of the checklist things though.You have to do the checklist, I think nobody here can say exactly what your problem is without putting hands on your engine.
have you checked for codes?
stock swap or did you add modifications?
Just sent him the list. I’ll bug the hell out of him until we run through it, or I’ll do it myself. But now that that’s aside, I have 1 more problem. What the heck is this sensor? Cant find where it plugs in, but it was plugged in before we pulled the engine! Thanks for your help by the way!!Tell your dad that at 73, I am probably older than he is,, so he can take advice from an old guy...
You guys with idle/stall problems could save a lot of time chasing your tails if you would go through the Surging Idle Checklist. Over 50 different people contributed information to it. The first two posts have all the fixes, and steps through the how to find and fix your idle problems without spending a lot of time and money. It includes how to dump the computer codes quickly and simply as one of the first steps. I continue to update it as more people post fixes or ask questions. You can post questions to that sticky and have your name and idle problem recognized. The guys with original problems and fixes get their posts added to the main fix.
It's free, I don't get anything for the use of it except knowing I helped a fellow Mustang enthusiast with his car. At last check, it had more than 250,000 hits, which indicates it does help fix idle problems quickly and inexpensively.
Is there any chance you can take a picture/video showing where it goes? We have to find the other end.There are two similar connectors in that area, one is for the sensor on the heater tube, the other is for the charcoal canister purge valve.
i think
i'll look in a few
Yup, only two there. The wiring for the purge valve has a pig tail from that connector to the valve down by canister along with the vacuum line.
You are indeed correct. I have edited my post to correct the error, thanks for the heads up.I did some research, and that switch is way back in the engine near the firewall, this plug is right next to the distributor. I know you know wayyy more than me, but that doesn’t seem right?
I can describe it faster, below the air box is a plastic box with what looks like a mushroom on top, there is a plastic line that runs down the frame rail from the fuel tank that connects to the tank on one end and the purge valve is connected to another nipple with a vacuum line and the wiring pigtail up by the fuel lines on the block to connect the pigtail to that connector and the vacuum line to the front of the intake.
Confused yet? Google fox purge valve and you will see pics
Ya, it was the purge valve. We bought some vacuum to run it from the intake, to the sensor, and onto the charcoal canister. And the reason I couldn't find the other end is because the 5.0 canister was still on the donor car! Little errors lol. I dont think its 100% the idle problem, but I'm sure it'll solve the gas fumes, and maybe bring it down a little bit. We also messed with timing which helped a lot. Running through the checklist after we hook up the charcoal vacuum.You are indeed correct. I have edited my post to correct the error, thanks for the heads up.
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