Another Bogging down issue

[completelyrevlimited]

what toes the tach do when the car gets its panties in a bunch?

Just kind of stays, no noticeable bouncing, anything really. Im stumped.

Update: Just changed out my Chip to the stock chip, now it wont start at all.

[digger]

what does the tach do when the car gets its panties in a bunch?

[completelyrevlimited]

[QUOTE=It's Soda Not Pop;n10071826]Here is a list of the codes

Finally got to resetting it for the night. Got code 1222 that flashed for a second then went away. Its stored.

However, new symptom / worsening : Car wont drive past 1k now, and idles at what looks like 500-600 rpms now.

have you done any engine mods or is it just the chip, maf, and injectors ? definitely sounds like the ecu is pulling the map at higher rpm. 19# injectors are a bit much on a stock engine, i don't think it's at the root of the issue though. sssquid usually recommends an injector with their tune, or runs stock, i'd go with their suggestion.

i noticed jay has dropped the maf conversion kit which saddens me. i hope it comes back. i'm going to run their 1.5 tune on an engine with mild mods and exhaust. i went with their recommended 17/19 lb/hr 4 pintle injectors. if you upgrade anything in an injector get away from the ancient inefficient single pintle capped injectors.

disconnecting the battery and letting the ecu reset is a great idea. it's possible you solve it on that alone.

No engine mods, Im running the Pink top injectors as that was an option with their tune. I believe they also brought back the MAF conversion as a new item, completely new version of it :D

[82eye]

have you done any engine mods or is it just the chip, maf, and injectors ? definitely sounds like the ecu is pulling the map at higher rpm. 19# injectors are a bit much on a stock engine, i don't think it's at the root of the issue though. sssquid usually recommends an injector with their tune, or runs stock, i'd go with their suggestion.

i noticed jay has dropped the maf conversion kit which saddens me. i hope it comes back. i'm going to run their 1.5 tune on an engine with mild mods and exhaust. i went with their recommended 17/19 lb/hr 4 pintle injectors. if you upgrade anything in an injector get away from the ancient inefficient single pintle capped injectors.

disconnecting the battery and letting the ecu reset is a great idea. it's possible you solve it on that alone.

[It's Soda Not Pop]

Here is a list of the codes

[completelyrevlimited]

I also see that you are using SSSquid tune. You can give them a call and/or email. I use them as well.

Yes, it works great.
Which makes me think this isn't a ECU / Tune issue. The problem also persists with their MAF conversion and stock VAM

[It's Soda Not Pop]

I also see that you are using SSSquid tune. You can give them a call and/or email. I use them as well.

[completelyrevlimited]

You need to see what codes are being thrown if any. Also You could try resetting the DME. Unplug the battery

In that case, I currently have it unplugged for overnight, to see if its possible that somehow the previous vacuum leaks are storing old fuel trim data? I'll have to test drive it for a bit and then check codes. So.. Will do!

[It's Soda Not Pop]

No, it feels like theres a limiter on it @ 3500-4000 RPMs



Will check in the morning when I get up, if its not that, what's the next step in testing?
If its the TPS, I checked it and seemed to be giving resistance and open looping between the switches.+

You need to see what codes are being thrown if any. Also You could try resetting the DME. Unplug the battery

[completelyrevlimited]

Will it free rev?

No, it feels like theres a limiter on it @ 3500-4000 RPMs

What is the stomp test telling you?

Will check in the morning when I get up, if its not that, what's the next step in testing?
If its the TPS, I checked it and seemed to be giving resistance and open looping between the switches.+

[e30davie]

Will it free rev?

[It's Soda Not Pop]

What is the stomp test telling you?

[completelyrevlimited]

Hi there, im a bit new to this forum, or any forum in general, so excuse me if im posting in the wrong section,

but I have a 1991 325I convertible that has been giving me issues recently and I cannot pin point where or what it is or coming from.

Symptoms: Can't rev past 3000-4000 RPMs while at idle, especially under load. The Rev Limiter Issue
Strange Happenings:
1. I've noticed that there seems to be a small hissing sound under the passenger side of the exhaust, either after the header, or right before the cat. (Will smoke test when I get the chance.)
2. There seems to be an odd grinding sound when actually trying to go past 4k RPMs. I would try to describe it as maybe a Aluminum can rolling on a hard surface? Hard to say.
3. Took out spark plugs after test driving, completely dry with signs of running lean, white powdery like a donut.
4. Smells kind of lean, almost like a firework sometimes, or like hot air?

Things I've Done:
-> I've just today replaced my Fuel Pump, and hooked up a fuel pressure gauge to the fuel rail, get about a steady ~39.5 PSI while at idle, ~43+ at load.
-> Eliminated all seen vacuum leaks. (No more smoke visible.), Oil cap and dipstick show a significant drop in idle when removed
-> New spark plugs, double checked gap
-> Checked cap and rotor, seemed good, scraped the pins to verify decent contact.
-> Wires seem good, (Checked each cylinder, removed cables significant change to idle and noticeable miss)
-> Coolant temp sensor seems slightly out of spec (~1800Ω, reading while cold), will recheck.
-> CPS sensor seems good, replaced with old one and definitely ran slightly worse, (Didn't have the problem with old one), read ~.600 Ω's

Modifications:
-> Currently running an MAF sensor conversion from SSSQUID
-> Currently running a tune from SSSQUID, with ECU starting with 5
-> 19# Injectors, (Pink top) 0-280-155-832, (Bought from ebay, can I get any advice if these are viable, everything has been running good up until now with these installed)


I've read around a few forums, scouring to find the solution, but as someone said, they've seen people post the issue but never actually gave a solution.
Any suggestions? I daily this car and has been reliable every day for the past two years, up until now. Thanks :)