My wife and I fled from Hurrican Ivan since we lived exactly where it hit the coast and we left the Lexus at the house. It got rained on a bit, but that's about it. We were gone for about 4 days and the car wasn't started in those 4 days. We were going to Walmart yesterday and when we would accelerate the car would hesitate, as if it were going to shut off, and then it would start to accelerate. It did it at every speed. Eventually after driving for about 10 minutes it stopped doing it. I drove it to work today and it was fine

I'm assuming it was some kind of fuel delivery problem, but it seemed to work itself out. Any suggestions?

 

Water in the igniton system. Pull everything and air dry.

 

The car is doing it again I don't know if it's the rain because we haven't really had heavy rain in the past week. It's been going on all week. It's doing it when you begin to accelerate from a stop or if you are cruising and let off the accelerator, then press it again. It will jerk for a couple of seconds then assume it's normal acceleration.

Could you explain exactly what I would take apart and let dry, if you still think that it's the problem.

 

I think you may have one or two bad spark plug wires or bad spark plug. You may have some moisture inside the distributor cap( comon on the 1st gen SC300 and GS300).

 

If it were spark plugs would it cease to do it and then resume later. It's happend twice in the past 2-3 months. I assume it's moisture in the dist. cap. Can you prevent it with a bead of silicone or something?

Thanks guys.

 

check and change plugs wire and distributer cap. I had the problem a while ago after I went through some water. Sputter and all was ridiculous. I got thee parts replaced and all was well.

 

Did you fix your hesitation problem? I have the same problem as yours but on a 92 LS400 with 247,000 miles. I appreciated if you can post your findings here.

 

Sorry, but I haven't fixed it yet... lol. I procrastinated because it hasn't done it in a pretty long time. It only last for a day or two and it disappears. i've asked several people and all of them say that it's the ignition components.

 

could also be a fuel pump...but start with the ignition first, they are easiest to get at.

 

How could you guys stay up that late? 11:30 PM and I'm out. Wait a minute. What time zone is that?
I still have this hesitation (jerking) problem. I'll work on it this weekend.

 

Make sure there is no water in the spark plug ports, the way the heads are designed there is no way for the water to escape.

My #3&4 plugs got water in the ports and I had the same problem. Just dry out each of the spark plug ports and hopefully your problem will be solved.

 

my solara was doing that... when's the last time you had the throttle body cleaned? That was the problem on mine...

It's as if you're accelerating from a dead stop and the RPMs actually drop below idle for a second before picking up, correct?

 

Result: Still have the hiccup once in awhile. Hesitation is gone.......based on a 25 minutes drive.

Replaced spark plugs - Autolite
Replaced ignition wires - bosch
Ignition wires - Old ones were really bad.
Old
1. 76K ohms
2. Broke - must be me pulling too hard.
3. 15.04K
4. No continuity at all
5. 42.1k
6. 16.45k
7. 297k
8. 10.27k
c. 3.76k
c. 3.45k