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renegade X 05-19-2013 01:19 PM

Air bag bypass - electrical
Hey guys, I replaced all of my engines electrical wiring and now it turns over but won't crank. After troubleshooting I find it is because I have no airbag and someone previously jumped some of the circuits to make it run (on the old wire harness). Anyone know how to do it? Is the system designed to disconnect the fuel pump when the airbag is deployed on impact?

AllMudd 05-19-2013 02:14 PM

What's the Year n engine. From what I know they didn't put airbags in until 97. And I'm taking it turns over(cranks) but won't start? Check the little things, do you have spark?, do you have fuel to the engine?, check engine or Maint req'd lights on?

JD95YJ 05-19-2013 02:38 PM

YJ's don't have airbags. Check all the ignition components like AllMudd said and go from there.

renegade X 05-19-2013 04:04 PM

1995 2.5L My book claims that it does have an airbag , and I figured out what to jump and it runs now. Jump over the Starter Relay and Fuel Pump Relay in the PDC, then cross the circuits and connect to the common input wire on the IAC that goes to the PCM (blk with lt blu) :punk:

Back to my original issue of idleing at 2000 rpms tough and this sucks! :banghead::banghead::banghead::banghead::banghead:

AllMudd 05-19-2013 04:12 PM

I would say your high idle is because you have something jumped! Lol where did they put the airbag? Take a pic of it cause this is puzzling. I have owned my jeep for 14 yrs now and it's a 95, only 1 PO (old man), and when I got it it was all stock. And it had no steering wheel airbag and since I e put a grant steering wheel on and the glove box area is all stock still to his day and no airbag.

BCDonny 05-19-2013 07:27 PM

only time mine has a air bag is when the wife is along for a ride : ))

renegade X 05-20-2013 03:07 PM

There is nothing to take a pic of since the factory steering wheel is not there. Haynes suggests there is an airbag, andt hese jumped circuits for sure are bypassing a system shutdown which a deployed aitbag would do. And this used to run fine with it rigged this way. When did it start ideling high? When I drilled out the good ol busted exhaust manifold studs, put everything back together then it started doing this. I took everything apart again, then back together - same thing. No trouble codes are triggered, and Pep Boys diagnostic machine found nothing wrong. This is killing me and I miss driving my Jeep. :confused:


Originally Posted by BCDonny (Post 3772246)
only time mine has a air bag is when the wife is along for a ride : ))


Garyk 05-20-2013 06:15 PM

Safety, Braking and Handling
For the 1995 model year, the Jeep Wrangler lacked common safety features such as airbags and antilock braking. The brakes themselves consisted of two front ventilated discs and rear drums. The front and rear suspension was of a rigid beam design with leaf springs, and the steering consisted of a recirculating-ball mechanism. The turning diameter was 33 feet.

The original manufacturer's suggested retail prices for the 1995 Wrangler's S, SE and Sahara trims were $11,995, $15,688 and $17,713, respectively. As of 2010, Kelley Blue Book estimated the price value range of the S trim at around $5,400 to $6,000, the SE trim at around $6,400 to $7,000, and the Sahara trim at around $6,400 to $7,100.

I think the only airbag on a 1995 Wrangler would have been if you blew up a ballon and taped it on the steering wheel..:rolleyes:Don't believe everything you read in a Haynes manual:nonono:

Nubby55 05-21-2013 11:51 PM

When you drilled out that bolt, is there a chance you drilled into the intake runner?

Nubby55 05-21-2013 11:54 PM

just because you have done every thing else, try putting some sealant on that bolt and when dry try it again.

mcseang 05-22-2013 08:46 AM

your yj does not have srs, even if it did a deployed bag has nothing to do with fuel delivery or shut off.... if you think your starting issues are air bag related you had better pack a lunch while you chase that ghost that does not exist

renegade X 05-22-2013 07:37 PM

OK, OK so you guys convienced me there is no airbag. Makes me feel better knowing my Jeep is street legal. Thatg is if it ever hits the streets again. :( So what the heck is the cross wire job all about???? If the rigged wire is not connected to the IAC, the fuel pump will not come on.


Originally Posted by Nubby55 (Post 3780490)
When you drilled out that bolt, is there a chance you drilled into the intake runner?

What does that mean - intake runner?? A new term so I am excited and hope you are onto something.


Originally Posted by Nubby55 (Post 3780497)
just because you have done every thing else, try putting some sealant on that bolt and when dry try it again.

I assume this is related to the intake runner? Do you mean remove the stud from the block and put sealant at the tip then reinstall?

Nubby55 05-22-2013 09:05 PM

Yes the hole in the head where the air goes into the valve, be twine the port hole and the valve seat. on some of the bolts holes, there is some casting inside the port and if some one was to drill too deep, it come out, into the intake port. maybe runner is the wrong thing to call it, it's a port.

renegade X 05-24-2013 02:44 PM

I do not believe I went too deep, but I will try anything at this point. If not maybe a custom throttle body if they make them with their own ecu.

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