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Pretty sure I moved the actuator by hand at the start of all of this, but will check again when I get back to civilization. Just saw the hose going up there from the EGR solenoid, but don`t remember what else is connected there (assumed it would be pump vac). I get the baro reading from AE in...

Vac lines have no cracks, chafe marks, etc., but I will rig up to it when I can get back. Since (I hope) nobody reading this is SELLING pumps, what IS a reasonable value (about 1,600 ft. above MSL)?

I wussed out and cleaned everything up and just used the EGR as a plug for now (dissabled). Got a code, but computer battery died before I could pull it. I don't think the EGR was leaking at idle, but it seems that when it got a signal the exhsaust backpressure was probably blowing it too...

Had a few hours this morning, so decided to kill EGR. I can not get the 1 7/8 frost plug into the exhaust duct of lower IM - not to mention I am scared shyltess to split the casting by expanding the plug. What is normally done to install?

I have to warn you: I am the techonazi to a bunch of young engineers & engineering technologists, so I tend to be correcting that kind of stuff or getting all preachy or testy out of habit. I was getting 7 lbs. last week, but this week I can not seem to pull over 5. The first 3 or 4 comes up...

Thus why it is expressed as psia (absolute). But, yes, it looks as if the first few psi comes in quickly, but after that, the MAP won't follow fuel delivery (i.e. boost tops out too early & too low). OK, that sent me scurrying over to the sticky in tech ref library (fantastic, BTW). I will...

Well, I am back (sort of, the one week job will turn into a two week one it looks like). While messages are flying back and fourth between Europe and here (time zones make it delay) I have a few hours off, so I took the Chevy for a wee ride with AE hooked up. I have some data (and some ideas)...

JiFaire: Well, my wife no longer lets me display my Western separatist bumper stickers, so I guess I am just a whipped puppy on that count. Thanks to all for the warm greetings - sorry to have dissappeared for a while, but had a client in deep doo-doo (will be for a while) and in the...

That's what I am hoping - but it makes it hard to pick a good fight.

Pavel: I will do that when I get back home, probably next weekend. BTW: It went from damn near totally gutless & super smoke back to it's approximate performance over the winter (which means visible smoke over 55mm3, but no longer a genuine, WWII destroyer size smokescreen) yesterday & set a...

Thanks for the welcome all. You guys seem to be a little left of centre compared with me, but I suppose we will figure that out once I have some time to visit the politics page. This is my silly season (build, operate & train operators on oil processing equipment required to work on very...

Have to go off on a job for a week or so, & won`t be able to work o Chevie. At least I can check in at night to continue my slow but I hope steady education. Thanks for the direction so far, but I would like to take a side trip through EGR & ECU memory lane if I might: so far, everything I...

WarWagon: Thanks for the EGR description. Is there a drawing or other text floating around for reference. Which EGR gasket are you referring to for failure or missing status. (keyboard defaluted to French, can't find question mark!) I don't think it is a problem with the backpressure...

EGR is `working` electronically, but no idea if it is mechanically. Any suggestions to check. I will eventually delete, but want to diagnose & repair first. I get EGR duty cycle of 0 with power, but is the EGR valve closed with vacuum or spring pressure. MP from AE is right, but will have...

Came over here from my normal haunt at tdiclub.com since I am driving a 6.5 ('97 K1500). It was my best bud's vet truck until '05 or so when he went Dmax. Sat around for years so he asked me to put it back in service just to keep it running last year. I have had a 5.7 pickup, a 6.2 Suburban &...

It's an "S". I can see it being low on vac, but how the heck am I getting 7 lbs. of boost? Also, please correct me if I am wrong, but isn't that all the MP I should get from this engine? It is behaving as not enough air (and, unless the injectors suddenly grew a bigger set of holes, or...

I imagine every newbie arrives here with a problem to post...so I won't dissappoint. '97 K1500, 200k kms, had an easy life as vet truck, parked until last year. The FSD was giving some grief last year, & what I thought was one symptom was losing boost. Had code for boost solenoid, so...