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1984 K10 LS Swap - Lots of Little Problems
Compression is fine in cylinder #2 at 190 psi; I let it sit for maybe 5 minutes and the compression did not change. Compression in cylinder #4 was also 190 psi. I check spark with a spark plug against the block and saw a regular spark. I don't have anything to compare the spark to, so I don't...- Bruce Wingate
- Post #72
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Hooked up a vacuum gauge and on seven cylinders it ran at a solid 21 PSI with no wavering. When I blip the throttle it drops down and then reasonably quickly gets back up to 21 PSI. When I plug in the number two injector pressure goes down to maybe 16 psi 14 psi. I tried unplugging the coil and...- Bruce Wingate
- Post #71
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
This is a 6.0 LQ4 out of a 2005 Hummer. I don't think they had AFM- Bruce Wingate
- Post #70
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Thanks @Ricko1966 Reader's Digest Version: 1984 K10 with LS swap. Once I got it back, it ran poorly. I narrowed that down to a dead/cold cylinder #2. Checking the plugs early on (before swapping with another cylinder), the #2 plug looked brand new. Compression looked OK (about 180 psi in...- Bruce Wingate
- Post #67
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Been a while, after Holley tested and OK'd the ECU, they replaced the harness. While I was putting everything back together, I managed to close my finger in the truck door. Nothing broken, but a cut that took a could of stitches to close. So, everything is back together with no changes. I...- Bruce Wingate
- Post #64
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Finally got a return authorization from Holley for the harness and the computer. Of course they have to go to separate locations, but I should have an answer in a couple of weeks. The tech said that if the unit has low hours that it may be warrantteed but could not make any promises. Next up...- Bruce Wingate
- Post #63
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
I've been quiet for a while - vacationed someplace warm. My last tech support call with Holley said to power the fuel pump via a relay and run a ground from the pump directly to the battery. I don't see the point, but I spent today taking care of the relay. My wiring is out of control with...- Bruce Wingate
- Post #61
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Different Question: Any idea what these wires are for?- Bruce Wingate
- Post #58
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
I've been silent on this for a while - I have to work on the truck outside and it snowed and then was cold and damp for a few days. Cold and damp is the combination I just can't take. I followed Holley tech support's suggestions and did not elicit any change. I did find that a power wire was...- Bruce Wingate
- Post #56
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
I did a continuity check but not an ohm test. Next couple of steps involve checking ohms along the circuit back to the ECU. I just spoke with Holley, and they suggested downgrading the firmware to v2 because some older versions of the Terminator do not like v3. Then it is shipping the unit...- Bruce Wingate
- Post #50
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
I'm a little stumped at this point. I swapped the injectors between #2 and #4 and the problem stayed with cylinder #2. Then I swapped the plugs between #4 and #2 and again the problem stayed with #2. I am getting spark and compression at cylinder #2 which were fine (I tried using the timing...- Bruce Wingate
- Post #46
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
I thought I replied to this a few days ago - guess I didn't hit send. I tried this and it didn't work. Its either my cheap timing light or I screwed it up. Today I hooked up a spark plug checker on cylinders 2, 4 and 1. All flashed appropriately although #1 seemed a little brighter. So now...- Bruce Wingate
- Post #45
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Spent today putting the fuel rail back on and everything buttoned up. I put a noid light on the even cylinders and got a positive result for all four cylinders (flashing lights = good). I tried checking to see if the injectors were clicking with a screwdriver, but couldn't quite tell - I heard...- Bruce Wingate
- Post #43
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Spent this morning cleaning/testing the injectors. All 8 injectors fire nicely with a good clean pattern. Also spent some time at Youtube University trying to get some hints. I came up with two Scanner Danner videos: Like @Bextreme04 said, SD said to check voltages of the connections in...- Bruce Wingate
- Post #41
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
To my understanding, the Terminator fires sequentially and is not a wasted spark system. I swapped ignition coils with no change. Tomorrow or Monday I will use some of the diagnostic funtions of the Terminator to trigger the injectors individually and see what happens- Bruce Wingate
- Post #38
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Why do I resist checking the ohms? Because I have terrible luck with connectors and no matter what I tend to break them. I felt that taking the fuel rails off would be easier because then I would have better access to the connectors. But that' not what I did. It took about an hour but I got...- Bruce Wingate
- Post #37
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
My working theory right now is that I have 1 dead injector and one or more leaky or stuck on injectors. Its running rich enough that there is raw fuel coming out of the tailpipe. All the stuff you suggested is Part 2 that I will do if necessary and/or as I'm reassembling everything. In my...- Bruce Wingate
- Post #32
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Here are two of the plugs I remeoved. #2 looks brand new, even if you can't see the electrode in this picture. All the rest looked like #4, a little sooty, but OK enough.- Bruce Wingate
- Post #30
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
I gave the wiring a quick check and the power and ground are going to the battery like required. I do not fully understand it, but the Terminator computer likes clean power and the battery is basically a big buffer/filter that provides the cleanest power. The connections from the Terminator to...- Bruce Wingate
- Post #29
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Coil wiring harness came yesterday and I installed it today with no change. #2 cylinder was still running cold. I forget the order I checked everything, but I pulled the plugs and the #2 plug was clean as a whistle - like it was unused. So I swapped #2 and #4 coils and there was no change...- Bruce Wingate
- Post #25
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
The terminator has some accomodations for AC, but I'm not sure if it goes much beyond increased idle and fan control. AC might not be conquored this year. The '84 came with cruise control and a 4 way switch on the stalk. It was originally controlled by by some sort of vacuum arrangement...- Bruce Wingate
- Post #24
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Well, it runs bad with the new throttle body because its only running on 7 cylinders . . . I spent a lot of time researching how to control the LS and I felt the Terminator would be worth it. I did not feel that relying on someone to modify/flash the stock computer and running a modified...- Bruce Wingate
- Post #21
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
@Bextreme04 - I'm going to keep the bigger throttle body for now. I have the original in case this one goes bad or causes problems. Honestly - it looks better. Holley Terminator does not use MAF - it uses MAP, so no MAF sensor is being used (and I don't think that there is a connection for it...- Bruce Wingate
- Post #19
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
@Bextreme04 - I'm not trusting the prior mechanic and will go over everything but I really want to get the truck running well enough to take it to get a proper tune. The big picture is getting it running and then concentrate on troubleshooting and double checking systems one by one later/as...- Bruce Wingate
- Post #17
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
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1984 K10 LS Swap - Lots of Little Problems
Well, the Terminator is in there now, so there's no going back. The harness is a Holley product, so no kludges from the mechanic. Temporarily I fixed the fuel system by removing one leg of the t on the return so I'm basically running from just one tank thru the selector valve. In the future...- Bruce Wingate
- Post #14
- Forum: Engine Swaps (Gas) LS, Vortec, LT1 , etc.
