Having some engine trouble.

[Jordan]

It's run at 1/4 since the engine was built, 9k miles ago.... head was completely rebuilt, including checking for cracks, and resurfacing. It runs at 1/4 temp because I have a cold t-stat. My head is not cracked.

[mjc85]

To me it sounds like a cracked head, i read that your car sits on 1/4 temp and wouldn't be suprised if your head is cracked. When i bought my car it was sold to me with a cracked head and did the exact same thing and a few other weird things as well.

Check it out

Mitch

[James Crivellone]

I really want to doubt it being an ECU problem. But like I said, if its not fixed by this weekend its a moot point, I'm not making the drive to the meet.

Well stupid questions but

Check your engine harness relays? basic shit like that

[Jordan]

I really want to doubt it being an ECU problem. But like I said, if its not fixed by this weekend its a moot point, I'm not making the drive to the meet.

[James Crivellone]

Jordan, if you would like I can bring my spare 173 DME down on sunday...

[Jordan]

Alright well the new CPS came in today. Battery was disconnected for ~1.5 days while it was out of the car.

Problem is still there, but I have a nice shinny new CPS. Oh well, it would have really failed soon.

I took the distrib cap and rotor off, both look ok. Cleaned off carbon buildup with a rotary wire brush, and put them back.

Problem is still there...

I took it out on a back road, and ran it through the gears.

1st it starts the misfirish crap at 6k, but will pull through it to 6940.
2nd it starts the misfireish crap at 6k, but will pull through it to 6940 with a bit more struggle then 1st.
3rd it starts at 6k again, and has alot of trouble pulling through to redline
4th it makes it to 6k just fine, then just stops. No misfirish shit. No strugling, nothing. WOT in 4th and it wont accelerate beyond 6k.

This was a flat level road.... sigh. Need to find the culprit before this weekend meet or I won't be going.

[kowalski]

bmw anything is bloody expesnive

[Mot]

it better be lol..

Knowing Patrick and BMA it will be here in 2 days. Plenty of time for jordan.

[AndrewBird]

My question is, will your car be ready for the meet on the 26th?

[Stu]

bmw sensors usually are

[kowalski]

shitty those are expensive little buggers.

[Jordan]

BMA price is ~$81.

[kowalski]

oops my bad i didn't see the second page to this form stopped reading at the first. i agree on the picture and on that note im going to take a look at mine tomorrow how much to those things cost?

[Jordan]

My in tank pump is new, and the outboard pump is not very old. I run my take till the light comes on all the time. in 9,000 miles or so I've had the tank more full then 1/2 once.

Ain't the issue. My money is on the CPS, I will order one tomorrow, should fix it.

[e30Matt]

i read somwhere about the fuel systems having trouble on E30's when its below half a tank some times, the pump can't hold the presure cause of less fuel, top it off or clamp the return line and see if she winds up, also im more partial to the chevron gas... anywho sounds fuel related, i have that problem as well but its only when i first start the car and its at the low RPM's not the the high... anywho good luck to ya

Somehow I feel the picture he posted is the culprit, not fuel issues.

Jordan, if that doesn't solve the problem, maybe try swapping in a known good ECU.