Bouncy
NAXJA Forum User
- Location
- Flat Rock, MI
The list is long but I am looking for ideas I haven't thought of.
4.7 stroker
Replaced with NEW CPS, AEC, AIT sensors
Replaced with spare used TPS tested with analog ohm meter and has smooth curve.
O2 sensor new last fall
Map sensor...UNKNOWN but worked on last motor. Adjustable map sensor not installed YET. Have it on the bench right now.
Motor has 100 miles on it right now.
Drove it last night and it died 2 miles from home. I can smell fuel from the tail pipe. It wont start. Pulled plugs and their soaked with gas.
Fuel pressure gauge says about 20psi with key off and about 40 running.
Vacuum lines have all been checked.
throttle body is a stock with the bottom cleaned out from 55mm to 60mm all work below the throttle plate, and no light around the plate showing when closed.
Engine is running cold. About 170-180 on the temp gauge inside. Still have to hook up my external gauge yet. T-stat is 180 and hesco water pump with 3 core radiator CSF from dpgoffroad. Mech fan only right now...no need for the electric (manual switch) Two external tranny coolers. CSF tranny cooler used as power steering cooler.
So it drives for 2 miles, tranny is shifting really weird. 2nd gear by 5mph, 3rd by 20mph then lockup. Drags itself up to 30-35 then 4th kicks in with lockup. No kick down at all. I have adjusted the cable for pressure. I have checked the TPS settings about 12 times now literly and on 2 different sensors.
My cam shaft in the motor is Comp cams 68-232-4 xtreme 4x4 shaft for FI systems. Duration at .050 is 206intake 212exhaust with 113 degrees of separation. It was suggested that my map sensor is screwing up because of the cam not providing enough vacuum?????
I don't have an Air/Fuel gauge to find the 14.7 ratio yet. Waiting on a friend to help me with that. I also need to borrow a vac gauge from my buddy to see what its pulling.
Stats of jeep/motor
4.7 stroker
fully ported/polished head and TB (chambers polished to prevent detenation)
2.0 chevy intake valves 1.60 exhaust chevy
9.5:1 comp ratio measured head and block milled for flatness also
4.2 crank 4.2 rods
Fully balanced assembly
Pistons tops polished to prevent detenation
1999 intake ported
Mustang 24lbs injectors
1995 fuel rail with new injector seals.
APN header with 3" flange and 3" exhaust ceramic coated
MSD 40k volt coil
Livewires 10mm installed
Accel copper dist cap
Accel copper rotor
Champion copper plugs gapped to .045 (suggested from msd cause of the coil)
AW4 tranny from a 1995 (Unknown info other than I put new fluid in it with filter)
NP231 with SYE...not that it matters.
Oh yeah...The electrical before we jump there.
5-90s XJ kit. All power lines upgraded. All grounds cleaned up before being installed with new lines.
Only questionable line is a ground going from firewall to INTAKE bolt rather than the back stud for the head. I used ARP stud kit and ARP just doesn't get it that they studs need to match in length to the stock setup. So there wasn't room to install to back of head. Only to the top of the intake. Wondering if thats an issue or not..any ideas??
When the motor was running kinda good for the first 100 miles, it pulled strong. I burned through the CPS wire with the header....thus why it only has 100 miles. Since that happened, the list above of work to get this running again has taken place. Sensors all being replaced and such to get this back running and get the tranny issue figured out. Tranny issue has been present since day one of the stroker motor. Tranny shop wont look at it till I get the motor issues straightened out.
4.7 stroker
Replaced with NEW CPS, AEC, AIT sensors
Replaced with spare used TPS tested with analog ohm meter and has smooth curve.
O2 sensor new last fall
Map sensor...UNKNOWN but worked on last motor. Adjustable map sensor not installed YET. Have it on the bench right now.
Motor has 100 miles on it right now.
Drove it last night and it died 2 miles from home. I can smell fuel from the tail pipe. It wont start. Pulled plugs and their soaked with gas.
Fuel pressure gauge says about 20psi with key off and about 40 running.
Vacuum lines have all been checked.
throttle body is a stock with the bottom cleaned out from 55mm to 60mm all work below the throttle plate, and no light around the plate showing when closed.
Engine is running cold. About 170-180 on the temp gauge inside. Still have to hook up my external gauge yet. T-stat is 180 and hesco water pump with 3 core radiator CSF from dpgoffroad. Mech fan only right now...no need for the electric (manual switch) Two external tranny coolers. CSF tranny cooler used as power steering cooler.
So it drives for 2 miles, tranny is shifting really weird. 2nd gear by 5mph, 3rd by 20mph then lockup. Drags itself up to 30-35 then 4th kicks in with lockup. No kick down at all. I have adjusted the cable for pressure. I have checked the TPS settings about 12 times now literly and on 2 different sensors.
My cam shaft in the motor is Comp cams 68-232-4 xtreme 4x4 shaft for FI systems. Duration at .050 is 206intake 212exhaust with 113 degrees of separation. It was suggested that my map sensor is screwing up because of the cam not providing enough vacuum?????
I don't have an Air/Fuel gauge to find the 14.7 ratio yet. Waiting on a friend to help me with that. I also need to borrow a vac gauge from my buddy to see what its pulling.
Stats of jeep/motor
4.7 stroker
fully ported/polished head and TB (chambers polished to prevent detenation)
2.0 chevy intake valves 1.60 exhaust chevy
9.5:1 comp ratio measured head and block milled for flatness also
4.2 crank 4.2 rods
Fully balanced assembly
Pistons tops polished to prevent detenation
1999 intake ported
Mustang 24lbs injectors
1995 fuel rail with new injector seals.
APN header with 3" flange and 3" exhaust ceramic coated
MSD 40k volt coil
Livewires 10mm installed
Accel copper dist cap
Accel copper rotor
Champion copper plugs gapped to .045 (suggested from msd cause of the coil)
AW4 tranny from a 1995 (Unknown info other than I put new fluid in it with filter)
NP231 with SYE...not that it matters.
Oh yeah...The electrical before we jump there.
5-90s XJ kit. All power lines upgraded. All grounds cleaned up before being installed with new lines.
Only questionable line is a ground going from firewall to INTAKE bolt rather than the back stud for the head. I used ARP stud kit and ARP just doesn't get it that they studs need to match in length to the stock setup. So there wasn't room to install to back of head. Only to the top of the intake. Wondering if thats an issue or not..any ideas??
When the motor was running kinda good for the first 100 miles, it pulled strong. I burned through the CPS wire with the header....thus why it only has 100 miles. Since that happened, the list above of work to get this running again has taken place. Sensors all being replaced and such to get this back running and get the tranny issue figured out. Tranny issue has been present since day one of the stroker motor. Tranny shop wont look at it till I get the motor issues straightened out.