'88 325is tach reading high

[jht3]

went to testdrive an '88 325is a friend is looking at. besides some of the normal things wrong w/ these older cars, i noticed the tach was reading VERY high. it pulled well but i looked down at the tach as saw it going past 7k!!! it's a motometer cluster.

at idle it was just above 1k, but the idle sounded a little rough
cruising at 50mph in 5th it was at 5k

these cars saw both VDO and Motometer clusters? could it be a coding plug? the car's history is mostly unknown.

[Stu]

Sounds like it might have a 4-cylinder coding plug. Check to make sure they arn't playing games with the mileage, it might have a 318is cluster in it.

[E30FreaK89]

does it have after market geuges (did he install anything himself?)
if soo then he had to have taken off the tach needle and when reinstalled might be off.

[O 16581 72452 5]

Sounds like it might have a 4-cylinder coding plug. Check to make sure they arn't playing games with the mileage, it might have a 318is cluster in it.

I'm with him.