Grreatdog
NAXJA Forum User
- Location
- Annapolis, MD
I have a 1997 Sport and to make a long satory short I blew the head gasket at high speed on an expressway and melted a piston by the time I got off the highway. Or, in other words, I trashed the engine. But with help from a friend I scored a 100k engine from a local pull and pay junkyard for $200 and swapped it in. Everything is hooked up the way it came out and the engine sounds sweet when I rev it with zero smoke or knocks.
But it will not start without giving gas and it will not idle unless I continually give it gas. It seems to get better as it warms up. Since I have two of everything and basically know everything from both sets works right I tried swapping throttle bodies and swapping the coolant sensor. It also has new plugs, new distributor cap and new rotor. And there is no check engine light or any codes that my generic scanner will pick up.
The only thing out of place is that I couldn't remember where the ground strap from the firewall connects. But it doesn't seem to matter where I bolt it in regards to this problem. And I cleaned up the engine grounds at the coil. I also see no reason to believe I have a fuel pressure problem since it was running like a scalded dog on the day of the meltdown. But something is obviously different swapping from the old motor to this one.
The "new" engine came out of a 97 Grand. But I swapped the flex plate to the one from my blown motor (they were different) and I also installed the intake manifold, throttle body and all sensors from my old motor. Ther only part I left original to the grand (except the long block itself) is the distributor. Even the water pump and oil pump are new. And I can't find any vacuum leaks. All of which exhausts my ideas about what I screwed up.
Anybody have any other suggestions?
But it will not start without giving gas and it will not idle unless I continually give it gas. It seems to get better as it warms up. Since I have two of everything and basically know everything from both sets works right I tried swapping throttle bodies and swapping the coolant sensor. It also has new plugs, new distributor cap and new rotor. And there is no check engine light or any codes that my generic scanner will pick up.
The only thing out of place is that I couldn't remember where the ground strap from the firewall connects. But it doesn't seem to matter where I bolt it in regards to this problem. And I cleaned up the engine grounds at the coil. I also see no reason to believe I have a fuel pressure problem since it was running like a scalded dog on the day of the meltdown. But something is obviously different swapping from the old motor to this one.
The "new" engine came out of a 97 Grand. But I swapped the flex plate to the one from my blown motor (they were different) and I also installed the intake manifold, throttle body and all sensors from my old motor. Ther only part I left original to the grand (except the long block itself) is the distributor. Even the water pump and oil pump are new. And I can't find any vacuum leaks. All of which exhausts my ideas about what I screwed up.
Anybody have any other suggestions?