Okay, so I have pretty much fixed 90% of the problems with my car, but there is still a random issue that appears and disappears.

EDIT: I have a 1JZ... thas all, keep reading now!

First scenario.... After a hard rain storm or during a rain storm, my car has the 2k rpm rev limit problem. This happens randomly and seems to fix itself after it the suns comes out and the air dries up. Weird thing is it doesnt happen every rain strom, but it only happens when it rains. I was thinking a bad map sensor?

Second... My car takes a minute to start. Somtimes 3 seconds of cranking before it turns over, and sometimes 5 seconds. When the car is warm it does the same with the occasional instant start. Weird i know..

Lastly.... (this is kinda hard to explain) Recently, when i try to start the car; it cranks and then starts, but it struggles to idle and hovers around 2-300 rpms while puffing out dark smoke. This last for about 10 seconds and then the car dies. Turn the key again does the same thing. Wait 30 seconds, car starts like normal and idles around 1300rpm in park and slowly falls back to normal around 9-1k rpms (takes about 2min to get back to normal).

The last problem has happened twice in the morning after the car been sitting all night.

Does anyone have an idea what might be wrong? Im thinking it has to do with the ignition, because my spark plugs where changed about 3k miles ago.

PS: GEORGIA SCs help me find a 1jz shop in atlanta, thread in southeast forum.. thanks

 

sounds like it could be a coolant temp sensor or a cam sensor issue...I had my coolant sensor wires crossed and took a long time to get started. Is the ECU throwing any codes?

 

Check out zen motor works or top speed, both great shops.

 

Havent checked to see if there are any codes. Im returning a spring compressor to o'reliys tomorrow, ill have them check.

Yeah Ive heard good things about zen motors, but I also want a shop that can tune/dyno as well. I checked top speeds website, they dont even sell toyota parts in their store. Do they work on JZ engines?

 

For problem 3, do you get a strong fuel smell from the exhaust?

 

Your first problem sounds pretty much consisitent with a bad electrical contact; either a bad wire (plug/coil/sensor), cracked housing (distributor cap/coil/sensor), bad connector (sensors), etc.

 

Yes and no. im also not running a cat. And its not really a strong fuel smell, but it does smell stronger than normal.


Also another symptom i forgot

When im idling at a stop light or after about a minute of idling the car will start misfiring. It will be a constant 800-1k rpms, then dip down to 300 and then right back to the steady idle. This is "dip down/misfire" is starting to happen more frequently now when i idle. Use to happen once when im at a light. Now its doing this 4-6 times.

 

Everytime I go over to top speed I see supra's, and they told me they do 2jz na-t's all the time. Zen works with top speed and uses their dyno, and they had a couple SC's, the one time I was there. Zen's owner is an active member on CL.

 

Problem 3 just happened again, and my mistake, yes there is a strong fuel smell coming from the exhaust. The whole parking lot smelt like gas.