The other day I was driving up the Interstate at about 80 mph, and my Lexus chugged a couple of times. My first thought was tranny, so when I got home I put some Lucas in the tranny. Next day I tried to start it and it would turn over, but seemed like no spark. I listened for the fuel pump, and I could here it prime. Finally started after several tries, but when i went and closed the hood it shut off. After several tries again it started. I started to drive it up the road, and it was sluggish at first, then drove fine. After about 10 min of test driving I decided to see what she could do. So, I stepped on the gas, she started to take off, then died. No sound, just died. Still had power though. Would turn over, but nothing so towed her home.
I took off my MAF sensor and cleaned it. Nothing. I took off the TB, and proceeded to change the plugs. I found there to be oil in the plug channel around the plug holes. I removed as much as I could before removing the plugs. When I did remove them oil was all over the threads, but not so much (I don't believe) on the end. I replaced the valve cover gaskets and plugs, then put it back together. Still would not start. I even double checked my connections. Pulled the fuel pump and cleaned the filter from some minor trash. replaced and nothing. Pulled a plug wire and checked the spark by putting a plug in the end and having someone turn it over (not sure if this is right). No spark. Battery was low from trying to start it so I had it checked at Advance Auto. They told me that two of the cells had welded themselves together, so I bought a new one. Still nothing.
There are many add ons such as a SRT High Flow Intake System with Race ECU, Grounding kit, and a TBKO electronic shift kit. All of this was on the car when I purchased it. Although, it does look professionally done.
Could it be the igniter? I hope not the Head. Any help?
How could it be the starter if it died while it was running? ECU maybe. Just not too sure that it is that extensive. It has almost 160,000 miles, and I'm not some idiot that just dumps a bunch of oil in my motor. Besides, I said that I changed my plugs.
check your connections to the srt ecu? i mean idk who did your install but maybe if it wasn't soldered correctly they could come loose?
i would say the same with TBKO too, although i highly doubt that one.
no CEL's when it was chugging?
The check engine light was on, but I was told that it was 02 sensor last time I had it checked. The Trac off light was blinking last time it ran. What could that mean? It has a brand new battery, so charging wouldn't do any good. I am also sure that I am getting no spark. Connections look fine on SRT ECU.
PROBLEM SOLVED!!!! I am an idiot as much as I am smart. After researching some more, I found that sometimes the VVT-I sensor/ solenoid can sometimes go bad. So, I removed it to inspect. To do this, the timing belt cover has to be removed. After inspecting it (and it looked fine) during reinstall, I looked over a couple of inches and realized I did not plug the front coil pack back in during the change of the valve cover gaskets & plugs. Reinstalled everything, and BAM, started right up. After taking her for a drive & blowing out the oil that spilled into the plug holes, & burning off oil spilled on exhaust from gasket change. She runs great, and with good power. So, I was right from the beginning to think it was the plugs. Just didn't know it yet. I'll post pics soon. Hope this helps a fellow Lexus owner.
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