Bunch of 325IX issues I need help with

[ccsdo5]

So I have a 1988 325ix with many problems still =/

- I replaced the odo gears since they broke and when I installed the cluster the tachometer and speedometer didn't work. The tachometer was just a bad fuse but the speedometer and odometer still aren't working, Any suggestions?

- When I start the car it can't seem to hold an idle very well it drops to like 400rpm then back up to 1200rpm and so on. but after I drive it for a little bit the idle is constant at around 900-1000rpm. Is it a bad icv? can it be cleaned or something?

- My battery also won't hold a charge. I can jump the car and it'll stay running fine. I tested it with a volt meter while the car was on and it was around 12.4-12.7 volts which is low, So I thought bad alternator, replaced my alternator and still same thing... Is my battery just bad?


Any help with these issues would be great, and I really appreciate the input! Thanks in advance!

[jlevie]

Does the battery warning light in the cluster illuminate when ignition is turned on? If it doesn't the alternator isn't getting exciter power, which is typically a bad bulb.

The ICV can be removed and cleaned, but you also need to verify that the TPS is good and correctly adjusted and have a shop run a smoke test to check for intake leaks.

If all of the fuses are good, the speedometer may not be getting a speed signal from the sensor in the differential. If the car has the 13 button OBC none of the speed related functions will work if that is the problem.

[ccsdo5]

Does the battery warning light in the cluster illuminate when ignition is turned on? If it doesn't the alternator isn't getting exciter power, which is typically a bad bulb.

Okay the battery light isn't on, so I think you might be right about the exciter, so how would I go about checking/fixing that issue? I just want my car to work the way it should

[jlevie]

The first thing to do would be to replace the bulb if it is burned out.