I have a 92 FJ80 that I picked up a couple months ago. It has 314k on the chassis, and was told engine was replaced at 150k. PO was... I think a worst-case scenario PO. Missing, capped, and jerryrigged hoses under the hood. One jerryrigged fix was an EFI bypass with a pull switch inside the cab. Switch needs to be pulled to start the truck; I was told it could kill the battery if I left it open too long.
Well, I didn't drive the truck for a few days and left it open. The battery was completely dead when I next had to use it. I used a battery charger to charge the battery, and since then the truck has had the following problems:
*SUPER rough idle, steadies at ~500 and shakes the whole truck and makes a bunch of noise
*Major hesitation at a standstill--like need to floor the pedal to get it moving and it's a 3 second delay
*Truck is cold until it really has to work. Temp is bottomed out until it's been driven for a while on the highway. Seems to drive okay once it's going. But when idling, almost no pressure in main radiator hose to engine--you can squeeze it.
*When driving slowly or moving from standstill, the engine seems to pop and misfire
*Gas smell
When I first got the truck, it didn't run great but ran okay. I got a fresh oil change (oil was sooty and black), and replaced the leaking/shot 02 Sensor and then it ran great until the EFI bypass-dead battery.
I'm waiting on a tune-up kit to arrive from the mainland still with OEM plugs, wireset, air filter, fuel filter etc. Been waiting a month because it got mailed on the slow boat. (I'm in Hawaii).
I just replaced all the small vacuum lines today, but to no noticeable effect. I tightened the clamps on the jerryrigged air intake hose and it idled better at the next start up, then bottomed out again after a minute. I've put in a couple cans of seafoam. Should I put in Cataclear on the next tank?
If I had another vehicle, I would just let it sit until I get the tune-up kit. But it's my DD and I need it to get around the Big Island--I live in a remote area at the top of a 3 mile 4WD road.
Questions:
1. How would the dead battery have caused this? What could have gone wrong? What should I specifically try to do to remedy it to decent working order with what I may have on hand?
2. Is it safe to drive? Will I harm the engine?
3. Besides a full tune-up, and an EGR delete I just ordered, and new fusible link and belts (to replace stretched out, likely incorrect belts currently running slack), what else should I do to get this truck purring? Do I need to delete or replace the cats? I'm going to order a new set of OEM 02 sensors (the one I replaced was a Delphi from RockAuto...before I really had any understanding how important it is to go OEM with these trucks).
I've read as much as I can here... and can't seem to get a clear idea what the hell is up with my rig.
Well, I didn't drive the truck for a few days and left it open. The battery was completely dead when I next had to use it. I used a battery charger to charge the battery, and since then the truck has had the following problems:
*SUPER rough idle, steadies at ~500 and shakes the whole truck and makes a bunch of noise
*Major hesitation at a standstill--like need to floor the pedal to get it moving and it's a 3 second delay
*Truck is cold until it really has to work. Temp is bottomed out until it's been driven for a while on the highway. Seems to drive okay once it's going. But when idling, almost no pressure in main radiator hose to engine--you can squeeze it.
*When driving slowly or moving from standstill, the engine seems to pop and misfire
*Gas smell
When I first got the truck, it didn't run great but ran okay. I got a fresh oil change (oil was sooty and black), and replaced the leaking/shot 02 Sensor and then it ran great until the EFI bypass-dead battery.
I'm waiting on a tune-up kit to arrive from the mainland still with OEM plugs, wireset, air filter, fuel filter etc. Been waiting a month because it got mailed on the slow boat. (I'm in Hawaii).
I just replaced all the small vacuum lines today, but to no noticeable effect. I tightened the clamps on the jerryrigged air intake hose and it idled better at the next start up, then bottomed out again after a minute. I've put in a couple cans of seafoam. Should I put in Cataclear on the next tank?
If I had another vehicle, I would just let it sit until I get the tune-up kit. But it's my DD and I need it to get around the Big Island--I live in a remote area at the top of a 3 mile 4WD road.
Questions:
1. How would the dead battery have caused this? What could have gone wrong? What should I specifically try to do to remedy it to decent working order with what I may have on hand?
2. Is it safe to drive? Will I harm the engine?
3. Besides a full tune-up, and an EGR delete I just ordered, and new fusible link and belts (to replace stretched out, likely incorrect belts currently running slack), what else should I do to get this truck purring? Do I need to delete or replace the cats? I'm going to order a new set of OEM 02 sensors (the one I replaced was a Delphi from RockAuto...before I really had any understanding how important it is to go OEM with these trucks).
I've read as much as I can here... and can't seem to get a clear idea what the hell is up with my rig.