rough idle

Hello Diesel Gurus, I’ve been on and off working on my HDJ80 Landcruiser trying to solve a rough idle issue. The truck has 260K miles on it. This spring I replaced the Injection pump and the injectors, along with the oil cooler, water pump, t belt and valve adjustment. I had the rough idle...

Hey brains trust! I recently got the mechanic to a leak on all six of the injector delivery lines. Previous to this, the 2H would run a bit rough on cold low idle (no smoke at all), but revving up with the hand throttle fixed this. Once she was warm all was good. Since fixing these leaks, it...

Hi all, 1994 FZJ80 starts up great and runs well for about 30 minutes when I come to a stop. Idling is pretty row and drops below 500rpm. Get a pretty strong fuel smell from the exhaust as well. Think O2 sensor based of what I've read. Anyone have a similar problem or any suggestions how to...

Having trouble getting my 85 smogged, car idles to rough. I’m more than certain it’s a vacuum leak, not only am I able to hear it but when the ICS is screwed in all the way the engine wouldn’t give out. So far I’ve put a new OEM TPS sensor and made sure everything was in spec with a multimeter...

At the end of my rope, this is the last ditch effort before I haul it to the dealer! 1994 FZJ80. This issue only occurs when the vehicle has sat for more than about 30 minutes. Upon cranking- very rough idle. Then when driving, slow acceleration, low power, surging, etc. Then, all of a sudden...

Hey there i made a thread a few weeks ago i have a 1979 fj45 2f Australian. The car was running absolutely beautifully until one day i start her up let the choke off and it would die. I replaced the inline fuel filter and it ran sweet for a day and then it happened again. So it sat for a week or...

Hi to all , I am experiencing an issue with engine performance resulting in poor emissions - high CO2. I do not get an DTCs nor MIL is illuminated. I checked data via Techstream and also made graphs of O2 sensors as I was suspecting them to be faulty. I have attached graphs that I measured...

Forgive the long story, but it might help isolate the issue. My family and i went camping a few weeks ago and on the way home the 1997 Land Cruiser 80 series (US 1FZ-fE) started running rough and the check engine light was flashing. I pulled over and pulled the spark plugs to see if I could...

Sometimes I feel the idling is slightly rough than before, any advice? Truck is up to date with all the belts and fluid replacements and drives fine, just when slowing down to a stop, nothing crazy and not all the time. Has anyone tried BG fuel treatments? Going on a road trip soon, just...

Hey y’all, hope everyone is good on this fine Oct day. So I have a misfire that has me stumped, I’ve chewed through every misfire post mostly on here and even some others with vehicles that share my engine (2uz in a 2000 lx470). I’ve got a rough idle, regular throwing of a p0304. Weirdly it...

My fzj80 isn't running smoothly, slight misfire, ticking from the front/top of the engine. No CEL (sadly) and it runs okay. When the engine is cold, and I first start it up it runs absolutely amazing, no ticking, not misfire, no shaking. Once it warms up and starts reading the sensors it runs...

Got a 94LC inline 6 with 335k on her. Love the truck. Unfortunately it has a once in awhile, I ate up all you coolant occurrence. Happened 2 years ago and caught it just fine. This time after about 7-10 miles down the road, she got pretty hot. Noticed it, pulled over and turned it off. I let her...

Quick backstory. Bought this cruiser just under a year ago. Overall very clean but I have been slowly baselining things. About a month ago I replaced PCV, all vacuum hoses and cleaned throttle body and MAF sensor. Replaced fuel filter, checked torque on spark plugs, recently replaced 2 coils...

Having some issues with my 2000 LX with 310k miles on it. It’s got a rough idle and the motor bogs when pressing the accelerator. No codes. This all started when I was initially throwing codes for cylinder 3 misfire, bank 1 too lean, and random multiple misfires. I decided to replace all coils...

Mea culpa. I changed a lot of stuff at once and am the root of my own problem. But, I don't know what I did to cause it... Before I forget - it is a '94 1FZ-FE with 297k miles. My idle is low and lumpy and i don't know what to troubleshoot. I just got this rig in late spring, I changed the...

Searched and searched without any answers. Here I have my 94 cruiser. Once warmed up the engine will run nice and smooth, but about every thirty seconds or so it gets really rough like it isn’t firing on all cylinders. Idles rough for approximately 10 seconds and then goes back to smooth. Does...

Hi i have a 1994 lc and i have a strange problem with it. Problem when i start the truck when it is cold it idles smooth. if i try to drive it right away the truck engine runs really rough. I noticed if I start the truck when it is cold, then wait about 10 seconds (for oil pressure to build...

I removed and cleaned the throttle body on my 1999 LC. My car has 270,000 miles. The Throttle body had lots of carbon buildup. I also unscrewed the PCV valve hose that connects the intake to the PCV valve on the top of the throttle body and removed tons of sludge from the inside. It was almost...

Howdy Guys, got an issue that i cant quite put my finger on got a 1997 1FZ in Australia (So No Cats ETC) 495xxxkms Top end rebuild 25xxx ago, Petrol/LPG Its been running super rich lately, getting about 26LT/100km and extremely poor when it first starts in the morning. At first the idle will...

I recently picked up a stock '18 GX460 w/ 35k mileage and clean carfax. I feel that it rides as it should and I don't really notice from looking at it or during the drive the infamous "KDSS lean". It maybe happens twice a week? but I notice that when I have my foot on the brake whether it'd be...