Thanks for the input, guys. No drivability issues, Brew, and normal idle. Everything seems fine except for the light. With 200K on them, I'm going to plan on four new Bosch sensors. They're likely used up anyway. New injectors and changing the rest of the parts-store coils to MC units should probably be part of my winter plan as well.

EDIT: I just looked back and some of the past intermittent CEL's have been lean codes, too, and I've seen them on Bank 1 and 2 without any sort of pattern.

 

Everything you said sounds good. That's how I bullet proofed the 98 at about 180,000 miles. Updated all that stuff with the right stuff. I did all at the same time. Plugs, coils, injectors and 02's. Only problem I had was with rear O2's. In the process of removing them, it took the exhaust bung threads out. Nothing I could do about it. They were seized in the bungs. Hope yours come right out, that was no fun!

 

Why do I doubt the authenticity of these "Bosch" injectors?
I was planning to go with these awhile back (when they were only $99).

EDIT: Any suggestions on a good O2 sensor wrench/socket? THIS socket style seems like a better option than the offset ones (?).
..

 

This one, not that other one, it won't work, -



Not sure on the injectors, I went with design III's. The tall skinny type, -

 

Thanks, Brew. After some further research, I'm considering cutting the wires on the old ones, using a standard socket to remove them, and get the slotted socket to install the new units.

Any suggestions on where to purchase a set of injectors (those, or the current style) that don't require one to sell a kidney?

Rock Auto FTW on the O2 sensors. Holy moley!

Autozone


Rock Auto

 

Honestly, never used a socket, even IF you cut the wires. Either a 7/8 wrench or that offset socket I posted. A socket (deep well) puts you too high and close to the cab and cabs heat shields. To much crap in the way. If that's all you had was a socket, you would have a really tough time with it....if it could be done at all.

The Bosch O2's look alright, well the 15717 does for the rears. I'm not sure about 15664, they look right, really short. I used 15717 (4) all around, or 15718's...for the longer harness length. But yea, what you have will probably work.

Use the same style 19lb injectors, but purchase the 4 hole version with EV1 connectors. The 4 hole atomizes much better.

 

Thanks for the follow-up, Brew. I didn't think about clearance issues. Makes sense.

In another thread I saw you installed Bosch III's. Have you changed your opinion on those? Is the noise an unwelcome trade-off for whatever small benefit they might provide?

 

No, the design III's are good injectors. I could hear them in the headers under the truck when first installed. But, not at idle with the hood open from the top. Can't really say nothing bad about them.

Yea, those are 5 hole. I used them because they were very new at the time and dirt cheap. Right off a factory crate engine being parted out. I used the coils off that engine as well. Package deal.

Currently your running single hole injector's. They have the short fatties in 4 hole now. Those are what I would go with today. Ford could of used the skinny 19lb injectors in these trucks but didn't. Their major car lines got them back then, trucks did not. The truck ran fine with them but didn't trust them 100% because they were never a OEM thing with these trucks.

Hope you can make sense of that, had to edit a few times, terrible lol.

 

Lol! You must've straightened it all out. I get what you're saying. Thanks.

 

Welding instructional video...