OK, according to the Bentley manual, the coolant temp sensor for the ECU should read 2200-2700 ohms at 68*. At 176* it should read 300-360 ohms. This is for the 325i and 325is. Bentley also lists dirty injectors and poor fuel pressure as a cause for hard cold start but hmmmmm. Bentley says the connector color is blue for the 325i and 325is Make sure you are not confusing the temp sensor for thby alanrw - Technical Forum
Any chance the new ecu sensor is defective? Is it ohming correctly when hot and cold? alanby alanrw - Technical Forum
Rick, what year and exact model is your car? I believe there are 2 sensors, one measures for the gauge and one measures for the ecu.(on the 84). alanby alanrw - Technical Forum
Did you check the coolant temp senders? Perhaps the ECU thinks the car is warm when it is cold? Lean cold start condition? alanby alanrw - Technical Forum
QuoteFerdinand Quotealanrw Does the 325E have a schrader release valve on the injector log? I'm pretty sure it doesn't. QuoteIf everything is well, you should get fuel squirting out when you break the connection. Keeping in mind that squirting fuel is really dangerous and not something that's recommended. Agreed, safety glasses and a towl will minimize the danger here. Also, iby alanrw - Technical Forum
Does the 325E have a schrader release valve on the injector log? Many cars have these in order to release fuel pressure before servicing the injectors. If the injectors are indeed leaking, thereby releasing fuel pressure, pressing the schrader valve after 30 minute would show no fuel squirting out. If no schrader valve, wait 30 minutes and simply disconnect the fuel line on it's way to the iby alanrw - Technical Forum
Another thought. Could the coil be going south? An overheated coil will give similar unpredicatble symptoms. alanby alanrw - Technical Forum
The payback is that this is the best car I have ever owned. All of my friends who have driven the car say it is a very fun and surprising car to drive. Hail the E30!!!! alanby alanrw - Technical Forum
I can't think of a cause for hard restart. Usually, it is a hard cold start. And if it were fuel delivery, wouldn't the car buck/shut down from fuel starvation? But you are right, leaky injectors would flood out the engine. Again, has fuel milage gotten really bad? alanby alanrw - Technical Forum
I was right? Really? alanby alanrw - Technical Forum
I think the tell here is that it runs fine until he shuts it off and then tries to re-start. If it is indeed flooding, won't he smell gas? If the injectors are leaking, wouldn't his fuel economy go out the window? I would think basics here, plugs, wires, dist cap (although if any of that was marginal, I would expect hard starting in the morning as well).Possible bad temp sender to tby alanrw - Technical Forum
I remember years ago mine was running really badly. I took it to my mechanic who popped the hood and seated the dip stick, the engine smoothed right out!!!! alanby alanrw - Technical Forum
The float and cap are integral (same) part. Just pull off the connector that attaches to the cap and short it with a paper clip. You won't do any damage to the electrical system nor will you receive a shock. If the light goes out, the issue is a bad sensor even if it is new. alanby alanrw - Technical Forum
Did you try shorting out the connector with a paper clip like Ferdinand suggested? If the light still stays on, your problem is downstream of the connector at the coolant tank. If the light goes out, is the coolant tank all the way up to the full mark? Also, test the float itself, it wouldn't be the first time a new part was bad. alanby alanrw - Technical Forum
But wouldn't it be more interesting if it was a helicopter simulator? Nap of the earth, guns, rockets? alanby alanrw - Community Forum
.....so much for global warming? alanby alanrw - Community Forum
But realize with contact cement, you get one shot at it. alanby alanrw - Technical Forum
Simply put, there's no substitution for cubic inches. alanby alanrw - Technical Forum
Aw crap, somebody send him a sawzall with a bimetal blade already!!!! Let the IX become a pickup. alanby alanrw - Technical Forum
What's that saying....when you hear hoofbeats think horses not zebras? We always go to the complex solution without checking the basics. alanby alanrw - Technical Forum
It seems coolant is a great engine cleaner, no? Glad it was something on the minor side, as you know, we are all pulling for this car. alanby alanrw - Community Forum
Isn't it mandatory that we name them after our brides? alanby alanrw - Community Forum
Great. I apologize, I gave you instructions for a 2 door not a 4 door model. Glad it all worked out. alanby alanrw - Technical Forum
Might as well check the guibo and the transmission mounts too!!! alanby alanrw - Technical Forum
They're almost as expensive as children aren't they? alanby alanrw - Technical Forum
Peter, it is only a "best bet" if it is the right head for your car. I understand your need to adhere to a budget in this case but realize, your engine and ECU are developed as a unit. Installing the wrong head could create a lot of headaches for you. For instance, again, I am not an expert on BMW heads. but if you get a new head with additional lift on the cam, with the wrong pistons,by alanrw - Technical Forum
OK, just got off the phone with my buddy the BMW tech. The heads are somewhat interchanable. You want the new head if not rebuilt to be rebuilt by a reputable machine shop who knows what valves go in your particular application. You can re-use your old cam and attendant parts. The machine shop will install new cam bearings as part of the head overhaul. As was stated above, it is in your bestby alanrw - Technical Forum
I have 2 friends, one was a factory BMW tech and the other guy works at the BMW Prep/Delivery depot in Oxnard, Ca. The second guy knows the cars A-Z, he is a great trouble shooter. I can check with him if you need me to. The other question is can the guts of the head be re-used/moved to a new casting or do they also need replacing. Often times, cams and valves should also be replaced if you aby alanrw - Technical Forum
Good point. It the part is identical and interchangable, it would have the same part number. Also realize, a head can have the same part number and still install a different camshaft. Research will be key here. alanby alanrw - Technical Forum
While I am no expert in decoding BMW heads, is it possible the casting number just relates to the blank casting before it is machined and cam installed? Is there a way to determine that the same head was indeed used in both vehicles? You could try going to a BMW repair shop for info or contact Pelican Parts to see if the parts are indeed interchangable. alanby alanrw - Technical Forum