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My 95 is OBD1 and i just use the ignition on-off-on-off-on to read the flashes
One day I will wake up and realize that my jeep is complete...one day, I just know it.
88Wag, LT1/4L60E/NP242, J20 axles, etc. http://imgbox.com/g/rNuIasKYrS
95YJ, STaK, D44's, SOA, ARB's, Bilstein 5150s, 35" KM2's
50 CJ3A
77 J-10 (sold)
Curly wrote:Can you get codes or data from the DLC (connector for computer that is normally under the dash)?
Already hooked an obd2 scanner up and it didn't have any codes.
I will double check all of the relays before I work tomorrow.
I will buy a multi meter Wednesday when I get paid so that I can check voltage at the plugs and at the coil.
No need for a voltometer, most wont handle that voltage anyway. Just pull a plug, hook it back to the wire, ground threads, and have somebody turn it over. It should spark. If not, we know the issue is in the ignition someplace. If it does spark, its either fuel, or sparking at the wrong time.
I think your problem is going to be related to that buzzing relay. Identify the relay, check its wiring and it will most likely be the cause of the no start.
I start what I finish.
81 Wagoneer 4.2/auto
77 Cherokee S 360/Auto/QT
97 Jeep Wrangler
Curly wrote:I think your problem is going to be related to that buzzing relay. Identify the relay, check its wiring and it will most likely be the cause of the no start.
Well I still haven't had time to go outside and check, however, as (in stock form) two relays power the ABS, one is the fuel pump (which in my case doesn't matter as the pump is hard wired instead of being on a relay), one is for the horn, and one is the AC unit. That leaves two possible culprits that could actually affect starting 1. The auto shutdown relay, and the starter relay.
As they are $5-$10 each I may replace both, while I am following wires to figure out which one is having problems.
So my genius #?*! broke one of the spark plugs while removing it to do a spark test. The plug appears to be in decent shape (other than being broken in half), however the model of plug was discontinued somewhere between 2007 and 2009 (reading different dates different places).
So I guess I will change out my decade old plugs while I'm doing everything else:
If you know anyone else with a similar year 4.0L, just swap the ECU. Or, if there's a cheap pick n pull around, grab a spare. I think ECUs are like $25 at my local yard, I keep a known good spare behind the seat.
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1983 J-10 - 4.6L(MPFI)/CS130D/Hydroboost/NV3550/D300/44/44/3.54/Disc-Disc/32s/42 gallon 'burb tank