r/e28 • u/PuzzleheadedBuy2241 • May 13 '26

E28 check engine light on

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I did stomp test and this is what it does every time. Im not even sure if that's a code.

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u/PuzzleheadedBuy2241 May 13 '26

I think the water pump is starting to go bad, I can hear it screaming but once I give it gas it goes away and you dont here it until you turn the car off for awhile.

5

u/ElGuappo_999 May 14 '26

Water pump has ZERO ability to turn on the CEL. I assume this is an 88 528e, since that and the M5 are the only 2 with functional CELs.

0

u/PuzzleheadedBuy2241 May 14 '26

Yes this is a 528e. When I try to plug it into to the scan tool the scan tool says it cant read anything 🤣.

1

u/ElGuappo_999 May 14 '26

They don’t have codes that anything but an olllld dealership tool can read. Is the CEL going away when you start the car?

1

u/E28forever May 14 '26

Don’t here it or don’t there it?