sypherzero
15+ Year Contributor
- 461
- 7
- Feb 14, 2008
-
Marion,
North_Carolina
Okay guys, I'm starting to become even more confused. I recently finished my build and got it installed into the car. Two Fridays ago I started the car for the first time, it started right up, idled a little high but then came down to around 900 RPM. I let the car get up to temperature then took it out for a drive. It didn't miss a beat! The motor felt strong, temps were good, oil pressure was good, just a really small oil leak and nothing else was wrong.
We drove the car around 4.5 miles then had to park it because it was late and I had to work the next morning. I even started it up again before we left it and moved it over a couple of feet from where it was originally parked. After that the car sat over the weekend until I tried to start it Monday evening. The car started right up, had a slightly rough idle, but nothing crazy, so I figured I'd put a few more miles on it. Nope. I started out of the drive way and went to go up a hill and the car felt like it had no power, it struggled to get to the top of the hill. As I was turning it around to head back home, it kept dying.
Now, if you can get it to idle, it's misfiring and only idling around 1-200 RPM. Once in a while if you press the gas pedal repeatedly, then hold it all the way open, you can get the car to roughly 2000 RPM, but once you let off it dies again...
So at this point, I've drained the gas tank twice, it has it's 2nd round of 93 octane in it. I've tried 2 different MAFs, 2 different coil packs, and 2 different throttle position sensors. It's getting spark on all cylinders, you can hear the plug wires arch to the plug walls if you remove them with the car idling. Compression is good (180, 180, 175, 180), and timing is spot on. You can tell that it is getting fuel too, because you can smell the un-burnt fuel in the exhaust gas.
The motor is an Evo I-III block, stock 2G pistons and rods, ACL Race main and rod bearings, new Nippon rings, crank was polished, all new Fel-Pro gaskets and seals, stock 2G cams with stainless valves and BC springs and titanium retainers, OEM BS eliminator parts, timing belt, timing tensioner, idler pulley, and tensioner pulley.
All of the sensors/solenoids are plugged up, but there isn't any coolant running to the throttle body (looped back to coolant pipe), no vacuum lines running to boost solenoid, or either of the emissions solenoids. The ECU is a socketed 95 Eprom with a relatively stock tune from My1GDSM.
Where else should I look? I'm so damn stumped right now. No, I haven't done a boost leak test, but all couplers and clamps are tight. Crank sensor? Cam sensor? Any help is greatly appreciated.
We drove the car around 4.5 miles then had to park it because it was late and I had to work the next morning. I even started it up again before we left it and moved it over a couple of feet from where it was originally parked. After that the car sat over the weekend until I tried to start it Monday evening. The car started right up, had a slightly rough idle, but nothing crazy, so I figured I'd put a few more miles on it. Nope. I started out of the drive way and went to go up a hill and the car felt like it had no power, it struggled to get to the top of the hill. As I was turning it around to head back home, it kept dying.
Now, if you can get it to idle, it's misfiring and only idling around 1-200 RPM. Once in a while if you press the gas pedal repeatedly, then hold it all the way open, you can get the car to roughly 2000 RPM, but once you let off it dies again...
So at this point, I've drained the gas tank twice, it has it's 2nd round of 93 octane in it. I've tried 2 different MAFs, 2 different coil packs, and 2 different throttle position sensors. It's getting spark on all cylinders, you can hear the plug wires arch to the plug walls if you remove them with the car idling. Compression is good (180, 180, 175, 180), and timing is spot on. You can tell that it is getting fuel too, because you can smell the un-burnt fuel in the exhaust gas.
The motor is an Evo I-III block, stock 2G pistons and rods, ACL Race main and rod bearings, new Nippon rings, crank was polished, all new Fel-Pro gaskets and seals, stock 2G cams with stainless valves and BC springs and titanium retainers, OEM BS eliminator parts, timing belt, timing tensioner, idler pulley, and tensioner pulley.
All of the sensors/solenoids are plugged up, but there isn't any coolant running to the throttle body (looped back to coolant pipe), no vacuum lines running to boost solenoid, or either of the emissions solenoids. The ECU is a socketed 95 Eprom with a relatively stock tune from My1GDSM.
Where else should I look? I'm so damn stumped right now. No, I haven't done a boost leak test, but all couplers and clamps are tight. Crank sensor? Cam sensor? Any help is greatly appreciated.