summit94
NAXJA Forum User
- Location
- Valley of Va
Finally got the 2000 4.0 back on the road after a series of delays. New head, cam, pumps, thermostat - and it fired right up on the first try.
Ran at 1500 rpm for 10 minutes per advice of machinist to help cam and lifters get acquainted. Then drove around town gently for a few miles.
FSM says after a rebuild to use a DRB tool to get the fuel injection pulses "in sync." A quick search of this forum shows this link to a work-around for those of us who do not own a DRB:
http://motorage.search-autoparts.co...estandard//motorage/292005/169830/article.pdf
The link is dead. Is there another link to a work-around for synchronizing the fuel? I would not be too concerned except that after a few miles the CEL threw a P0138 code. I'm guessing that this could well be related to being a little bit out of sync. When I reinstalled the camshaft position sensor parallel to the crankshaft, it ended up about a half a toothpick off.
I do have access to an OBDII scan tool that the folks at Advance Auto say can read "fuel trim." Can that be used as a substitute for the DRB?
Many thanks to the experts on this forum who have helped get this Jeep back on the road.
summit94
Ps. After getting the code, I replaced the only vacuum hose that was in obvious distress - the one that connects intake manifold to valve cover and appears to include a PCV. Have also replaced the stock injectors with a set of rebuilt 784's. Wiring at and to Bank 1 Sensor 2 appears to be OK.
Ran at 1500 rpm for 10 minutes per advice of machinist to help cam and lifters get acquainted. Then drove around town gently for a few miles.
FSM says after a rebuild to use a DRB tool to get the fuel injection pulses "in sync." A quick search of this forum shows this link to a work-around for those of us who do not own a DRB:
http://motorage.search-autoparts.co...estandard//motorage/292005/169830/article.pdf
The link is dead. Is there another link to a work-around for synchronizing the fuel? I would not be too concerned except that after a few miles the CEL threw a P0138 code. I'm guessing that this could well be related to being a little bit out of sync. When I reinstalled the camshaft position sensor parallel to the crankshaft, it ended up about a half a toothpick off.
I do have access to an OBDII scan tool that the folks at Advance Auto say can read "fuel trim." Can that be used as a substitute for the DRB?
Many thanks to the experts on this forum who have helped get this Jeep back on the road.
summit94
Ps. After getting the code, I replaced the only vacuum hose that was in obvious distress - the one that connects intake manifold to valve cover and appears to include a PCV. Have also replaced the stock injectors with a set of rebuilt 784's. Wiring at and to Bank 1 Sensor 2 appears to be OK.