Engine struggles after Lexus AFM/550cc mod.

[artorush]

Installed the 550c injectors and Lexus AFM today (took my time with them). When I turned on the engine it struggles to stay on, the RPM needle would fluctuate, then engine dies. The only way for me to keep it running is to rev it up, but once I stop revving it'd struggle and dies.

Every hoses, connections, injectors and seems fine.

I've checked for error codes from the ECU. There is some code. But I can't quit understand how to read this code. When I start the engine it blink first 2times....then....4times....then....1times....then...3times. It goes on and on like this.


I really need this car to be running normal again, I am stuck with out it. :icon_conf

Any advice would be thankful.

 

[ForcedTorque]

That would be codes 24 and 13. But, that doesn't make sense to me, as I thought it started with the lower numbers, and moved up to the bigger numbers. Correct would be 13 then 24. I'm sure someone has the link saved to tell you what those are.

 

[artorush]

Yes I do have link to those codes. It's here. But can't it really be one of those codes? Do it make sense after this mod? Anyone?

 

[GrimJack]

Did you plug the AFM connector back in?

 

[DBN]

My car sometimes does this when i have a code 32. I've checked over the numbers the OP posted and just like ForcedTorque said it cant read the codes from highest to lowest. Im thinking that you might have caught it in the middle and you may actually have codes 32 and 41. Not exactly saying that you did it wrong but its a possibility. Hope this helps.

 

[artorush]

My car sometimes does this when i have a code 32. I've checked over the numbers the OP posted and just like ForcedTorque said it cant read the codes from highest to lowest. Im thinking that you might have caught it in the middle and you may actually have codes 32 and 41. Not exactly saying that you did it wrong but its a possibility. Hope this helps.

Yes I did connect it to the AFM, but I don't go all the way in, I will try to push I futher inn. 32 and 41 can some more likely to, I going to check those tomorrow. Thanks alot for the replies. I will tell how it went tomorrow.

 

[DBN]

No problem and good luck with it. I hope to do this in the near future too. Also... did you upgrade your fuel pump?

 

[artorush]

OK, I've check the intake air temp sensor signal in the air flow meter(CODE:24). It is all fine, I've tested it with an ohmmeter. I've checked also the voltage on the ECU(THA - E2) 4-5V on ignition on, and the wiring, no problems there.

Started to think it must be else were. Maybe when I switched for the new injectors, and I had to change new plugs because the ones wouldn't fit. So there can a injector wiring is short circuit, and a piston rod are not working at all. I just tried to remove one injector plug while the engine was running, it sounded and preformed worse. Can this be the cause of it????

 

[RiyadYar]

did you put the 7m electronics on the lex afm body

 

[artorush]

did you put the 7m electronics on the lex afm body

I tried with both same problem. Where do I find the HAC sensor signal on the 7m-gte? Reading from Code: 32.

 

[black89t]

do you have a afpr? if you do what is the fuel pressure set to?

if i remember right the lex/550 run insanely rich on most cars so you have to drop the base fuel pressure down a bit for it to even idle. you will look like a diesel if you leave the base stock. i'm guessing you don't have a WB so check a plug and see if its black(running rich). a WB is something that you really need if running over fuel cut. i have a uego that i really like.

 

[artorush]

do you have a afpr? if you do what is the fuel pressure set to?

if i remember right the lex/550 run insanely rich on most cars so you have to drop the base fuel pressure down a bit for it to even idle. you will look like a diesel if you leave the base stock. i'm guessing you don't have a WB so check a plug and see if its black(running rich). a WB is something that you really need if running over fuel cut. i have a uego that i really like.

No I don't have any afpr, just lex/550. It do smoke a lot of white smoke, and the it forms a black dirt line on the ground. Too much fuel?? No I don't have WB. So I should check the spark plugs if their black? If so I'm running Rich?

 

[black89t]

^yup. you only really need to check one plug. i would go for 6 since you can just pop the wire off then pull the plug.

the white smoke thing is a different story. does it happen even when the car is warmed up. are you loosing coolent post a vid of the smoke if your worried.

 

[artorush]

^yup. you only really need to check one plug. i would go for 6 since you can just pop the wire off then pull the plug.

the white smoke thing is a different story. does it happen even when the car is warmed up. are you loosing coolent post a vid of the smoke if your worried.

Ok i'll check that one. I am not sure, i'll check that now. I will post a vid also.

 

[artorush]

Yes it does run rich galore! I've checked what you told me, the sparks plugs are black. Is it any way to clean them or do I have to buy new ones?

I also checked the coolant, the level has dropped a little on the coolant reservoir(I've not been driving since the mod yesterday, just cracking the engine). I took some pictures which seems like a leakage from some were.

In the video I couldn't reach any higher rpm as you see, no matter how hard I pushed the pedal. Seems very subnormal. And the engine struggles like hell. And you can see white smoke coming out of the exhaust adding a black layer on the ground. Can it be because not all the fuel getting burned efficiency or the coolant geting mixed in the explosion chamber?? The engine died at the end of the video.
(Sorry for bad video quality).

VIDEO

Any advice would be helpful.

 

[Nick M]

if i remember right the lex/550 run insanely rich on most cars .

No it doesn't. It runs insanely rich on any car where the owner cranked the screw, installed a pump, and didn't bypass the j-tube. It won't run any richer with the larger meter and appropriate injectors.

 

[Supracentral]

if i remember right the lex/550 run insanely rich on most cars .

No it doesn't. It runs insanely rich on any car where the owner cranked the screw, installed a pump, and didn't bypass the j-tube. It won't run any richer with the larger meter and appropriate injectors.

Nick is correct. The 550 cc/min injectors are 25% larger. The Lexus AFM is 25% larger. This is the entire point of the Lexus/555 mod - the car should run nearly stock provided nothing else has been changed.

Sounds like a wiring problem. Check the connector on the AFM and the harness. Make sure you didn't bend up the pins or push a connector out.

 

[RiyadYar]

yea i would check make sure none of the wires insulator got ripped off ,,,also did you clean the electronics before you swapped them because iirc your not supposed to clean those with any old cleaner ?

 

[artorush]

Problem solved. Working like a charm now. The was two errors: First the afm, switched to another and fixed the connector. Second: There was a major exhaust leakage from the exhaust manifold, I needed just to tighten the bolts. And there is absolutely no need for any afpr, so that is just bullshit using money and time on that. And exhaust temp readings are normal. Thanks a lot for the replies!

 

[grimreaper]

an afpr should be your next mod if you have more lined up. You need SOME control over whats going on (even if its basic). Check your vf's. What are your WOT af ratios? If its remotely close to mine your in the mid 9's af ratio wise at wot with stock fuel pressure settings.