Is it possible for banks of cylinders to have different EGT temperatures.?
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LBZ: EGT temperatures different on cylinder banks.
- Thread starter c20elephant
- Start date
I could see a small variance being possible, but the differences you are seeing seems like something is wrong. My first question would be, do they always have a large variance like that, or does one just lag behind the other? On a long steady pull, do they run close to the same (within 50 degrees or so)? Is the placement and installed depth the same, and is the probe and gauge the same brand? I can't see a 500 degree difference being possible unless you have a mechanical problem with the truck such as an injector or restriction in the intake or exhaust. I really don't know what could cause it because I've never seen it or needed to diagnose it. The first thing I would do is look at the gauges and probes though.
Identical probes and depth, the only difference is the length of the probe lead wire which would be a slight resistance increase and should not be of much concern. The dual gauge, short probes, and leads are ISSPRO with weather pack connectors. Would not be difficult to reverse the probe wires at the gauge and see what happens...
The large differences are lagging when I accelerate hard on the freeway then settle when cruising.
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The large differences are lagging when I accelerate hard on the freeway then settle when cruising.
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If your truck is running right then there is an issue with your gauges. I agree with what Josh said, I could see a slight variance but not the large ones you are seeing.
I cant remember but are isspro gauges that ones that were notorious for crapping out? maybe you have a bad guage or probe.
I'd swap probes between gauges. that should be the easiest to do. If you swap and the temp variance stays, then I'd swap probes between sides. If you did all that and the issue still remained then I'd be looking inside the motor
Edit, I just jumped over and read that EDP post. interesting first I've heard of such a large swing in egts
I cant remember but are isspro gauges that ones that were notorious for crapping out? maybe you have a bad guage or probe.
I'd swap probes between gauges. that should be the easiest to do. If you swap and the temp variance stays, then I'd swap probes between sides. If you did all that and the issue still remained then I'd be looking inside the motor
Edit, I just jumped over and read that EDP post. interesting first I've heard of such a large swing in egts
I would try swapping the wires and if that doesn't change anything then try swapping the probes. I'm not sure which side is reading the higher temps for you, but with my EGT probe installed in the driver's side manifold, I see right at 350 at idle after I've been driving. If I let it sit and idle long enough, the temps will eventually fall down closer to 300, but it takes a little while.
I coulda swore that I've read that there is a substantial difference between L/R engine banks, which is why its recommend that we place a probe on the passenger side? by substantial I mean/remember reading between 150-350* under throttle
Mike, is the hotter side the passenger side?
Mike, is the hotter side the passenger side?
Would the flow into the stock y-bridge, which favors the drivers side affect this issue?
Corey
Edit: I read where EDP said that they didn't see EGTs even out until they added up-pipes & manifolds.
Corey
Edit: I read where EDP said that they didn't see EGTs even out until they added up-pipes & manifolds.
My last trip to California cruising at 80 mph for 3 hours by the time I reached the rest stop parking stall and parked my EGT's were in the ~300-400 range with the passenger being lower and the passenger is the side that spikes.
I thought so too. Within a couple hundred degrees. Don't remember which one is the hot one. Think it has to do with how bad the factory manifolds are.
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The reason people put the probe in the passenger's side manifold is because it is easy to put it there. Pull the plastic inner fender liner, and it is right there staring you in the face. The driver's side is not so convenient.
I'll pick up some ring terminals and wire the orange fittings for the V2 I have and compare the gauge to the V2 and then flip flop left to right on the gauge.
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I ran identical probes in both sides back when I had my 06 crew cab lbz. I saw zero difference, with, and without swapping to a BD manifold.