EDIT: Fixed this issue about 90%. What I ran into was I had sprayed around the intake manifold vacuum hoses multiple times, but did not think about the purge valve vacuum hose. It is somewhat hidden, if looking at the bay from the drivers front fender it would be behind and to the left side of the throttle body.
I noticed that when I followed the charcole canister, there is a purge valve with a vacuum hose and an electrical connector. Mine was not connected, resulting in worse mileage, unexplained gas smell, and the vacuum leak created a lean condition. Its an easy check.
Also, I had replaced the cracked oem fuel pressure vacuum hose with the smallest one from advanceautoparts. It was slightly too big, so the guy recommended putting hose clamps. This did not clamp them down all the way, just went to GPS and got the correct vacuum hose and now the car Idles a ton better.
I picked up my e30 325is back in september, but ive noticed something since ive owned the car.
When the car starts cold, it idles like its a cammed muscle car. Originally when I had it, it would even out to a normal idle when it reached operating temp.
Now, it idles like its cammed, whethor its cold or warm. When its warm, its not as bad but still does it.
Idle is around 600-650 ish, when it used to be about 750 solid when it idled fine warmed up. I have not adjusted the idle at all.
Gas mileage is still very poor. In the bentley, it said a rich running car would idle erractically or something along those lines.
My guess: Since the car idles the worst when its cold, its in open loop. Its running off the inputs, and not the o2 sensor. Since the car still idles iffy when its at operating temp, I am wondering if it is stuck in closed loop. This would cause excessive rich conditions, and my poor fuel mileage all the time.
Ive been sick and cannot smell correctly (damn cold) but Ive also been smelling a gas scent. Ive looked all around the tank (replaced it a couple months back) and the lines seem alright, and no leaks underneith my car ever from what I have noticed. I did notice a smell under the hood, and I know the p/o replaced lines to the rail. I am just wondering if this has any relation to being in open loop.
I will have a video tomorrow of the idle cold, and one of it when its warm. I am wondering if it is the CTS to the computer, since the coolant temp gauge seems to work fine.
But besides that, I dont really have anything to check. Please let me know if you guys have had a similar issue, or have an idea of what to check. I am im the process of either swapping/boosting this m20, but either way I would like to figure this out.
I noticed that when I followed the charcole canister, there is a purge valve with a vacuum hose and an electrical connector. Mine was not connected, resulting in worse mileage, unexplained gas smell, and the vacuum leak created a lean condition. Its an easy check.
Also, I had replaced the cracked oem fuel pressure vacuum hose with the smallest one from advanceautoparts. It was slightly too big, so the guy recommended putting hose clamps. This did not clamp them down all the way, just went to GPS and got the correct vacuum hose and now the car Idles a ton better.
I picked up my e30 325is back in september, but ive noticed something since ive owned the car.
When the car starts cold, it idles like its a cammed muscle car. Originally when I had it, it would even out to a normal idle when it reached operating temp.
Now, it idles like its cammed, whethor its cold or warm. When its warm, its not as bad but still does it.
Idle is around 600-650 ish, when it used to be about 750 solid when it idled fine warmed up. I have not adjusted the idle at all.
Gas mileage is still very poor. In the bentley, it said a rich running car would idle erractically or something along those lines.
My guess: Since the car idles the worst when its cold, its in open loop. Its running off the inputs, and not the o2 sensor. Since the car still idles iffy when its at operating temp, I am wondering if it is stuck in closed loop. This would cause excessive rich conditions, and my poor fuel mileage all the time.
Ive been sick and cannot smell correctly (damn cold) but Ive also been smelling a gas scent. Ive looked all around the tank (replaced it a couple months back) and the lines seem alright, and no leaks underneith my car ever from what I have noticed. I did notice a smell under the hood, and I know the p/o replaced lines to the rail. I am just wondering if this has any relation to being in open loop.
I will have a video tomorrow of the idle cold, and one of it when its warm. I am wondering if it is the CTS to the computer, since the coolant temp gauge seems to work fine.
But besides that, I dont really have anything to check. Please let me know if you guys have had a similar issue, or have an idea of what to check. I am im the process of either swapping/boosting this m20, but either way I would like to figure this out.
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