BMW 324td

On Tue, 07 Nov 2006 18:08:17 GMT, "nat_neil" waffled on about something:

You need to work out if the sender is being truthful... If it's twitching, it sounds a bit odd. Unfortunately a normally happy working temperature for a car engine is also what you'd call hot.

Ignoring the fact that the sender sounds a bit iffy, when you say the temperature get's to 3/4 then goes down, does it go down very suddenly? If so, change your thermostat, your current one is sticking.

Dodgy.

If it overheats in traffic I'd suspect the viscous fan coupling.

All the above are low-skill tasks to replace low-cost parts. It won't hurt you to buy the parts and change them all out. Replace the coolant too, if you have never done so.

This sounds like a gauge problem to me. The temperature gauge in my 318i acted like this when the gauge was failing. The next time it acts up, just try giving the instrument cluster a sharp rap with your knuckle to see if it has any effect. When my gauge was going out sometimes this would cause it go back to normal and sometimes it would jump all the way into the red, the important thing being that tapping on the instrument panel would cause the temperature gauge to change quickly.

Hi.

Had the same problem with my E30 325i,very simple to fix.Remove instrument cluster,removed the cable from the temp gauge,clean off and refit. Fault is caused by a bad contact,cleaning and roughing up the contact usually helps. I had this done by an independent specialist,who after i told that I thought the fan,sender etc was faulty just asid NO dirty contact and only charged me a few pounds to repair.

Mark

Good luck.

PLEASE HELP ME!!! Hello gentlemen! I have a BMW 324td, E30, Automatic, from 1991, with an electronic injection pump (it has no cable and has a potentiometer on the pedal). After it sat for more than 2 months, when I started it, it did not go up more than 1500-2000 revs and that by pressing the accelerator very slowly. If I press 2 millimeters more than that point, the engine speed decreases at idle. I mention that I changed the potentiometer from the pedal and the electronic head from the injection pump and it does the same. I also changed the computers but...it goes very badly or does the same thing. :(((( Has anyone encountered this problem before, can you help me? Thank you in advance!

Likely your fuel system is gunked up or your exhaust system is plugged. How much fuel is in the tank and have you measured the fuel pressure at the rail? Have you looked for signs of animal nests in your exhaust?

--scott