hello, need help, I started to get error code 44, I replaced o2 sensor looked over all vacuum lines and it all looked good, went for ride and check engine light come on and off, it does not stay on. after reading a few more postings on the forum I decided to replaced egr valve egv315 using #11 spacer and Delphi ts10077 sensor by the air filter box, I went for a drive 10 miles or so and the check engine light came on, now code 32 comes on and code 44, not sure what else to do, fiero is parked in garage I have driven the car only 2500 miles in the last 12 years, never had this issue before, should I drive longer will I do damage to her, still runs like a champ, any advice would be appreciated, thanks and good day peter
The code 32 is rarely caused by the EGR valve, but by the EGR selonoid, (under the back coolent cap) and only sets a code when driving at a constant speed/throttle postion for a bit. most of us have learned to ignore it at this point. I would reset the ECM (unhook the battery for a bit) and see what codes come up, it takes like 50 starts to reset otherwise.
hello, I reset ecm, went for a ride last night, drove 7 miles and the check eng light came on then it went off, as I continued to drive it came back on and stayed on until I got home, I drove the fiero for about 62 miles, I checked codes again and 32/44 came on, I will put back my old egr valve and double check all vacuum leaks and exhaust leaks...I hope I can find a solution, I will just replace parts as needed, I do not drive her as much, she is my garage queen, thank you to those who posted replies, this forum is very helpful and fun to read all these mods with different engine transplants, it would be nice to have a bit more power in my stock gt, thanks and good day, peter
hello, after reading previous post, I went to the fiero and ding dong me, I never connected the plug that does into the egr solenoid, I was checking all connections and this one was missed, I will go for another drive tonight and post results, thank you guys for the tips so far, thanks and good day. peter
hello, went for a drive last night and now I only get error code 44, it only comes on for a short time, but after a few more miles of driving it stayed on until I got home, should the check engine light stay on all the time, what else should I look for, thanks and good day, peter
Oxygen Sensor - Lean Exhaust The ECM will set code 44 when the ECM detects a low voltage from the oxygen sensor and the system is operating in Closed Loop (conditions must exist for longer than 20 seconds).
Check the wires of the oxygen sensor, making sure they are not in contact with the exhaust manifold.
Check the oxygen sensor and replace if necessary.
Check the MAP sensor. If the ECM detects a higher than normal vacuum then this will cause the system to go lean. Disconnect the MAP sensor. If the lean condition goes away, then a problem exists with the MAP sensor.
Check for lean injectors.
Check for fuel contamination (specifically for contamination with water).
Check fuel pressure. If pressure is too low, the system will be lean.
Check for exhaust leaks. An exhaust leak can cause air to be pulled into the exhaust and past the sensor.
hello, I will try to work on the fiero this weekend, thanks gall757 for such a detailed post, I might have few more question on how to check fuel pressure, how to check lean injectors, ect, thanks and good day, peter
hello ...I was able to spend more time to figure out why I still get code 44, I had noticed my engine temp very very low, I realized the new thermostat i installed was a 180 and the new fan switch had low written on the side, i had ordered these parts and told the parts guy i live in florida and that's what he sold me, so the car would not overheat he said, i removed these parts and i went to my local parts store and got a new 195 thermostat and a new oem fan switch, the car runs at proper temp now, but the engine light came on a few times and went off, the engine light does not stay on all the time, i checked code again and still 44, i did read on the forum that if the car runs to cold it could run in closed loop (not sure what that means), that is why i went to buy new parts, should the engine light stay on all the time, why does my light go on and off and show 44. i never had this problem before...i hope i make sense with my post, i just want to fix the car, i also noticed my rear bumper all dirty and bad mpg,...
The check engine light does not always stay on: perhaps the problem comes and goes. Have you changed your oxygen sensor? It is not expensive, and often it is the reason for a code 44. Another good check would be for fuel pressure.
[This message has been edited by Gall757 (edited 03-05-2015).]
Check your grounds and make sure the O2 sensor wire is not damaged somewhere in the harness by checking continuity between the ECM plug and the sensor connector on the harness. Check your fuel pressure also.
hello... ...i got new o2 sensor from fiero store, maybe i should buy another one from my local autozone store, as for the black soot on my bumper, the car does not burn oil my friend said that its from running rich, before this tune up that i did the car ran perfect never any codes and i had good mpg, but when i installed the new 180 thermostat and low fan switch that's when the code came on and bad mpg, i only drove the car for around 300 miles or so with engine temp being very low and noticed the black soot on back bumper,......therefore i installed the new 195 thermo and oem fan switch, the temp now gos to half way and fan gos on at around 220-230, but i only drove the car for 70 miles, should i drive the car more miles, does the ecm need more time to adjust, thanks peter....
The rich condition should go away. Your computer thought the engine was cold and added fuel. Now, with the correct thermostat, it should be OK. Wash the back of your car and see what happens in the next 70 miles or so. If it is still running rich, you may want to change the Coolant Temp Sensor.
hello, iam still getting code 44 and it smells rich, I have replaced temp sensor to ecm and another o2 sensor, once I start the car up, it runs nice then after a while the engine light comes on with code 44, I have check vacuum leaks with brakekleen and no leeks, the rpms are just under 1000rps, iam going to buy a fuel pressure gauge and see what happens, I was told to bring the car to mechanic but I just don't want some bucher working on my garage queen, should I replace some other parts, this code 44 is eating up all my spare time and driving me crazy, I think I might buy a new map sensor but there are so many different ones, please any suggestions, is there any one here in florida st pete that could help, thanks peter
Check your grounds and make sure the O2 sensor wire is not damaged somewhere in the harness by checking continuity between the ECM plug and the sensor connector on the harness. Check your fuel pressure also.
Do you have a meter? Have you tested the sensor wire yet? There is something going on with that circuit even if the O2 sensor is new.....
hello, yes I do have a meter, just don't know how to check the o2 wire with the ecm, I will tonight check the fuel pressure, I got a fuel gauge at the famous harbor freight store, I also bought a new egr selonoid which should arrive in a few days, plus I am considering to buy a new map sensor, not sure what has happened to her she sits in the garage has never seen snow, its just weird all of a sudden this code 44, I appreciate the help from the folks on this forum, thanks peter
hello, I checked fuel pressure last night and when I turn the key on the pressure gos to about 45 then after 15 minutes it drops to about 41-40 and it took about 2 hrs to drop to about 32, I will try to start her today and see what the fuel pressure gauge says, I am considering to disconnect the o2 sensor and go for a drive, will this be ok, thanks peter
You need to figure out if there are any breaks or problems in the O2 sensor wire. I don't know which wire it is on the ECM connector...but someone on the Forum knows and may help us out with that. Usually the connector at the sensor is the problem.....make sure it's clean. Also, there may be an exhaust leak that is throwing the sensor off.
edit: is your rear bumper still getting black?
[This message has been edited by Gall757 (edited 03-25-2015).]
update update, I finally got my code 44 to go away, I have replaced everything that I could from injectors to all the sensors ect. and I was still getting code 44, I gave up and took the fiero to the Pontiac dealership, after an hr the tech came back and told me he thinks its the ecm, I ordered a new ecm from autozone swapped out the chips and the fiero is running like a champ again, no more code 44, it only took a year to figure this one out, thanks to all the suggestion on this forum, good day peter
