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Search: Posts Made By: Jpcalhoun
Showing results 1 to 23 of 23
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Forum: 1st Generation S-series (1983-1994) Tech
03-20-2014, 05:58 PM
Replies: 7
Views: 947
Posted By Jpcalhoun

Sounds like it could be a dirty fuel filter

Sounds like it could be a dirty fuel filter
Forum: 1st Generation S-series (1983-1994) Tech
12-28-2011, 05:32 PM
Replies: 7
Views: 21,607
Posted By Jpcalhoun

For a factory 1992 4.3l cpi, you want to set the...

For a factory 1992 4.3l cpi, you want to set the base timing at 0° tdc. You can play with it a little if you have modifications such as a cam or other which requires an advance in timing. But the...
Forum: 1st Generation S-series (1983-1994) Tech
10-08-2011, 02:26 AM
Replies: 2
Views: 2,302
Posted By Jpcalhoun

Oh, and the issue I am having is that the engine...

Oh, and the issue I am having is that the engine idles well but has no power when accelerating and feels like it is misfiring and backfires a little too when engine is under heavy load.
Forum: 1st Generation S-series (1983-1994) Tech
10-08-2011, 02:14 AM
Replies: 2
Views: 2,302
Posted By Jpcalhoun

Fuel pressure low?

Ok, i have a '94 GMC S15 Jimmy 4x4 with the 4.3L cpi engine. Did a fuel pressure test and with engine off and for 2 seconds after key is turned over pressure is at 56 psi, but after 2 secs it drops...
Forum: Engine & Transmission
10-05-2011, 08:02 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Did a fuel pressure test and with engine off and...

Did a fuel pressure test and with engine off and for 2 seconds after key is turned over pressure is at 56 psi, but after 2 secs it drops to 50 psi. With ignition off it stays at 50 psi but drops to...
Forum: Engine & Transmission
10-04-2011, 01:31 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Idk I guess ill just drive around with it for a...

Idk I guess ill just drive around with it for a while and see if it gets any better and keep testing other possible issues. I have a feeling that its something simple that will show instant...
Forum: Engine & Transmission
10-03-2011, 09:36 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Put Lucas in the trans and still no results. I...

Put Lucas in the trans and still no results. I drove like 10 miles and nothing changed at all. Maybe this is an engine problem? Need to check spark plug gaps, ignition coil, timing advance, ect ....
Forum: Engine & Transmission
10-03-2011, 12:01 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

The bottom of the trans pan had a very thin layer...

The bottom of the trans pan had a very thin layer of a liquid sludge, but wasn't anything bad like I had expected. I also had bought enough fluid to empty the trans pan twice to get half or better of...
Forum: Engine & Transmission
10-03-2011, 09:40 AM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Ok, new update, I dropped the trans pan and put...

Ok, new update, I dropped the trans pan and put in 4 fresh quarts of trans fluid. It seemed to help very slightly but not much at all. However, it now has a noticeable shudder at about 45mph cruising...
Forum: Engine & Transmission
09-30-2011, 12:05 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Its not my daily, its a project that's drivetrain...

Its not my daily, its a project that's drivetrain wise almost done other than the trans issue. I'm just trying to pinpoint the problem so I don't put a lot of time and money into a toast trans. I...
Forum: Engine & Transmission
09-30-2011, 05:17 AM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Ok, ill test the transmission fluid lines to the...

Ok, ill test the transmission fluid lines to the radiation for pressure and coolant, and do a drop and drain and check for water in trans pan. May be a while before I can post results as I'm out of...
Forum: Engine & Transmission
09-29-2011, 12:47 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

No codes, digital gauges, and it does shift into...

No codes, digital gauges, and it does shift into overdrive, it just wont maintain a steady speed, it gradually decelerates until it kicks down a gear. But it shifts fairly smoothly, and I just put a...
Forum: Engine & Transmission
09-27-2011, 09:09 AM
Replies: 3
Views: 539
Posted By Jpcalhoun

If its a running rich code, its probably cause...

If its a running rich code, its probably cause the new injectors are putting out more fuel than your old injectors and a sudden change like that may set a code, just a thought. Let us know what the...
Forum: Engine & Transmission
09-27-2011, 06:14 AM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Fluid is brown, but it was like that before the...

Fluid is brown, but it was like that before the tyranny started acting up, plus with 180,000 i'm scared to do a flush, would a drop and drain be sufficient enough do u think?
Forum: Engine & Transmission
09-26-2011, 02:58 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Would a bad torque converter cause this or would...

Would a bad torque converter cause this or would it be something else?
Forum: Engine & Transmission
09-25-2011, 10:34 AM
Replies: 2
Views: 774
Posted By Jpcalhoun

If i'm not mistaken, i beleive that stock 700r4's...

If i'm not mistaken, i beleive that stock 700r4's are only rated at 400hp and 400 torque, which is pretty close to what u have. If i was going to put very much money, time and effort in the engine i...
Forum: Engine & Transmission
09-22-2011, 10:36 PM
Replies: 17
Views: 5,643
Posted By Jpcalhoun

Transmission seizing up?

I have a 1994 s15 jimmy with the 4.3L vortec cpi and automatic transmission. After driving for a few minutes and the transmission begins to warm up, i have to really strain the engine to accelerate...
Forum: Engine & Transmission
05-29-2011, 12:49 PM
Replies: 7
Views: 3,331
Posted By Jpcalhoun

Ok, so i have a new update. I had a bad pcv valve...

Ok, so i have a new update. I had a bad pcv valve which was filling my intake with oil. But at least it was simple to diagnose and i now have peace of mind with the injectors being replaced. I wonder...
Forum: Engine & Transmission
05-19-2011, 07:27 PM
Replies: 7
Views: 3,331
Posted By Jpcalhoun

Ok, made a new discovery today, no fuel leak, but...

Ok, made a new discovery today, no fuel leak, but there is oil getting into my intake plenum via the egr system!!! WTF!!! What would cause this? I can only guess That my intake manifold has a crack...
Forum: Engine & Transmission
05-15-2011, 11:50 AM
Replies: 7
Views: 3,331
Posted By Jpcalhoun

The carb marine intake swap isnt really something...

The carb marine intake swap isnt really something i want to look into b/c i want to keep the factory engine and computer system. I think that the vehicle won't have as good of a resale value if i...
Forum: Engine & Transmission
05-14-2011, 12:46 PM
Replies: 7
Views: 3,331
Posted By Jpcalhoun

Yea, i was kinda afraid that being a cheapskate...

Yea, i was kinda afraid that being a cheapskate on the injectors would bite me in the ass, but i guess we'll see... Fortunately i work at a toyota dealership, so i have access to most of the...
Forum: Engine & Transmission
05-13-2011, 10:13 PM
Replies: 7
Views: 3,331
Posted By Jpcalhoun

Rebuilt, bored, cammed 1994 4.3L running weird

Ok, ill start from the beginning. I have a 1994 gmc s15 jimmy (square body style) with a 4.3L vin code "w" vortec engine. Oil pump went out july 2009 and engine shredded the main and rod bearings, so...
Forum: Engine & Internal
01-27-2011, 12:51 AM
Replies: 8
Views: 1,725
Posted By Jpcalhoun

Get on www.Summitracing.com, enter your vehicle...

Get on www.Summitracing.com, enter your vehicle year, make, model, and engine size and they will have aftermarket chips/modules, but be warned that the stage 2 chips do require a 180 thermostat, free...
Showing results 1 to 23 of 23


 
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