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The distributor gear looks brand new.BigBro74 wrote: ↑Thu Jun 27, 2019 12:22 am Have you checked the distributor gear? I put intake gaskets in ones of these, And it ran fine. Few months later it comes back acting similar to what you describe, and the gear on the distributor was all worn sharp. New one of those and all done (after much head banging trying to figure it out)
I'm correct to assume you had the problem before replacing all of these parts? It's been a minute or 2 since I've worked on one of these. IIRC there used to be a BUNCH of wrong fuel pumps out there. (This is an "R" motor isn't it? 8th vin digit = R) The injectors were problematic, but usually caused cold starting, or cold skipping/misfire problems.(It's the spider looking injector assembly under the intake isn't it?) If you unplug all the O2 sensors how does it run? Does in run like it needs more fuel, or does it run OK. (this forces open loop) Again if I'm remembering these models correctly I've seen PCV problems cause lean codes. Make sure there's a good connection from the valve cover to the air cleaner housing. Timing chain, or distributor gear problems usually cause low power or detonation. If the cam to crank angle is off enough it will set DTC's. You can see the cam to crank angle with a scanner, but I don't remember what's it's called. I've slotted the distributor hold down to get a few more miles out of ones with worn timing chains. I've had driveability problems caused by (what I call) tuliped intake valves. The cranking compression would be good for some reason. I don't specifically remember lead codes...but it's been a while. Connect a vacuum gauge and see if it dances around at idle.So far I have replaced the fuel pump, fuel filter, injector assembly, O2 sensors,
Glad to hear you got it fixed. I thought I had recommended that in one of your previous threads but after looking through them, that wasn't the case. I had a bunch of issues in my 01 Vortec truck that all disappeared with a new TPS. But I was having issues with the TCC not unlocking and locking up consistently, as well as a few other minor things and nothing really similar to your issues. Glad you got it fixed.travis wrote: ↑Fri Sep 13, 2019 7:30 pm This time it was the TPS. A $30 /)($&@!! TPS. I had tested it twice and it read perfect from closed to wide open throttle, no less!
The TPS is the only thing left I hadn’t replaced, but I noticed as I got other issues fixed it had a completely dead spot at very light throttle tip in from a dead stop. When I pulled the old TPS off, I noticed a lot of slop in it. Put the new one in, took it for a test drive, and there was no change at all initially...still had the light throttle surging but still ran ok at heavier throttle. After a couple miles, it threw a check engine light (I haven’t checked that out yet), then started running perfect.
Gawd...what a beating trying to figure this out
bigjoe1 wrote:By the way, I had a long talk with Harold(Brookshire) last year at the PRI show. We met at the airport and he told me everything he knew about everything.It was a nice visit. JOE SHERMAN RACING
So now we can put nitrous on it?travis wrote: ↑Fri Sep 13, 2019 7:30 pm This time it was the TPS. A $30 /)($&@!! TPS. I had tested it twice and it read perfect from closed to wide open throttle, no less!
The TPS is the only thing left I hadn’t replaced, but I noticed as I got other issues fixed it had a completely dead spot at very light throttle tip in from a dead stop. When I pulled the old TPS off, I noticed a lot of slop in it. Put the new one in, took it for a test drive, and there was no change at all initially...still had the light throttle surging but still ran ok at heavier throttle. After a couple miles, it threw a check engine light (I haven’t checked that out yet), then started running perfect.
Gawd...what a beating trying to figure this out
LOL I wouldn't without at least a marine intake manifold and 8 real injectors.GARY C wrote: ↑Sat Sep 14, 2019 2:30 amSo now we can put nitrous on it?travis wrote: ↑Fri Sep 13, 2019 7:30 pm This time it was the TPS. A $30 /)($&@!! TPS. I had tested it twice and it read perfect from closed to wide open throttle, no less!
The TPS is the only thing left I hadn’t replaced, but I noticed as I got other issues fixed it had a completely dead spot at very light throttle tip in from a dead stop. When I pulled the old TPS off, I noticed a lot of slop in it. Put the new one in, took it for a test drive, and there was no change at all initially...still had the light throttle surging but still ran ok at heavier throttle. After a couple miles, it threw a check engine light (I haven’t checked that out yet), then started running perfect.
Gawd...what a beating trying to figure this out
bigjoe1 wrote:By the way, I had a long talk with Harold(Brookshire) last year at the PRI show. We met at the airport and he told me everything he knew about everything.It was a nice visit. JOE SHERMAN RACING
I was thinking a 50 shot just to clean the plugs...midnightbluS10 wrote: ↑Sat Sep 14, 2019 3:37 amLOL I wouldn't without at least a marine intake manifold and 8 real injectors.GARY C wrote: ↑Sat Sep 14, 2019 2:30 amSo now we can put nitrous on it?travis wrote: ↑Fri Sep 13, 2019 7:30 pm This time it was the TPS. A $30 /)($&@!! TPS. I had tested it twice and it read perfect from closed to wide open throttle, no less!
The TPS is the only thing left I hadn’t replaced, but I noticed as I got other issues fixed it had a completely dead spot at very light throttle tip in from a dead stop. When I pulled the old TPS off, I noticed a lot of slop in it. Put the new one in, took it for a test drive, and there was no change at all initially...still had the light throttle surging but still ran ok at heavier throttle. After a couple miles, it threw a check engine light (I haven’t checked that out yet), then started running perfect.
Gawd...what a beating trying to figure this out
It would probably take a 200 shot to put this thing into the 15’s!
