You can check ohm's between the end of the glow plug and the block, excluding problems in the harness from the equation. The light goes off (?) if there is a difference between plug #2 and any of the other plugs I think.

1989 Dodge B-250.

You can't think that I would honestly list that in the sig........

Sure, if it had a Cummins!

Since you stated/asked ----- In my honest opinion, and based on personal experience, I'd list the B-250 before I listed the E38.

OMG -- what a nightmare car my 97 was! The only car I've ever owned, that I felt uneasy about and didn't trust for a 100 mile trip.....Mine must have been one of those you hear about being built late on a Friday afternoon, or the first one built on a Monday morning! Although, I will admit - I have a couple of friends that swear by their 00 and 01 model E38's.

Goods and bads with all I guess....

The E-38 is new to me. I knew about all it's potential "issues". I found one with only 58K on the clock to minimize them. But, currently I'm stuck with a SES light and, after dumping $1K into it chasing things........it's still there.

It do love the way it drives and handles, however.........leaves lesser vehicles in the dust on any curve.

Like the W140, it's a very complex piece of machinery and it takes a skilled tech to solve its issues in an expedient manner.

I don't remember SES light details - I had radiator, multiple electrical things, constant check engine, rough idle, dual cats went out way to early in their life....just seemed like always something simple and stupid.

But oh yes --- I so agree...what an amazing ride and performance that was unbelievable! I loved being the older guy, in the 4 door sedan that knows he can totally blow away some of the younger ones with their hopped tuned rice burners.....

You have good tech knowledge, and the cars are strong --- enjoy it!

Yes, the SES is "service engine soon" on the BMW. Same as a CEL. I also have the rough idle........but, only when cold. After replacing the backplate, we chased it down to a defective backplate........as received from BMW brand new. We'll see if another backplate finally cures it.

They're known for eating the cats...........

OK, back to my troubles...

It seems that #2 and #4 GP's are bad. I am guessing that one was bad and the second one just happened to go when it was in the shop. They did have it for two days. What I will do is get a reamer tool and a couple of GP's from the dealer and ream and replace them.

Is it ok to just replace two?

Thanks

BC, you are correct and I stand corrected --- it was the SES light, not check engine. Been many years since I thought about it. My Rover also has SES light - and the same basic 4.0 liter motor....

Yes........unless you prefer to do all five for the pleasure of banged up hands and freezing fingers.........