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On a recent drive 1986 GN seemed to go into Limp home mode. At home I hooked up a scan tool, but could not get connectivity with the ecm. I wrongly thought ecm was defective and replaced it. Could not get connectivity with new ecm. What am I missing? I have not driven the car since. Any ideas...

Is it possible to check some of the engine sensors thru the ignition module connector? Cam sensor, crank sensor? Thanks, Dave

Just finished an engine rebuild and car was running fine. Was running an errand and shut the car off for about 10 minutes. When I came out the car would crank just fine, but no start. Towed home. Has fuel pressure at rail. Injectors are pulsing. No spark on any plug. Circuit 839 (M) on harness...

Need belt tensioner assembly without a broken ear- please advise price and shipping- Thanks, Dave

In the process of reassembling my motor after the two center mains went out. I have a fairly new radiator that has always run cool. But, I need to replace the engine oil cooler because of metal contamination. I have a shop that will do the work, but cannot locate an original or aftermarket in...

Had to rebuild the rotating assembly after the loss of the two center mains. Now I am making sure there is no metal left to contaminate the new engine. I would like to have the radiator engine oil cooler replaced, but the AC Delco part number (3039077) is no longer available. Does anyone have...

:) On the radiator oil cooler which is the inlet and outlet? Top? Bottom? Thanks, Dave

Built this engine about 4 years ago with all the right parts and machining- Line honed, balanced, girdle etc. Engine failed recently, started knocking, disassembled and found main bearings 2 & 3 totally destroyed- we are trying to figure out what happened, car was to the track once and was...

This stock motor is complete with all accessories, including wiring harness and a/c lines- was purchased from insurance salvor in 1999- I contacted the original owner about the condition of the engine- he said car was hit in rear/side and that engine ran perfectly, no smoking, smooth and strong-...

How long should it take to change out the oil pump internals? I do not want to remove the front cover, just change the gears in the pump. Thanks, Dave

Has anyone ever experienced a noisy oil pump? Just did a complete rebuild using a Sealed Power Hi Volume oil pump- motor runs great with good oil pressure, 20-25 at idle. The problem is that when first started there is a rapping noise coming from the front cover area, which quiets somewhat as...

Getting all the parts together for a winter engine rebuild. Using TRW pistons. I see that the stock pistons have small oil feed holes in the pin boss, that the TRW's don't. Has anyone drilled the holes in the TRW's? Any thoughts on whether this is needed or desirable. Thanks, Dave

Sunday, November 3rd Track opens 9am

Looking to install a line lock in the next few days. Any suggestions or installation tips. Still have the original Power Master setup. Thanks, Dave

Last night after the GN had been sitting for about 3 hours the car alarm went off. As I approached it I could hear the fan running. Tapped all of the driver side relays, no change. Disconnected the fan delay relay and it shut off. Defective relay? Thanks, Dave

I seem to be having some trouble tuning my SMC alcohol kit- Car ran great before kit, basically stock 12.5 @107.5- since then I've added a TA49, bluetops and a 3" downpipe- car will carry 18PSI on Sunoco 94 without the alcohol- am using Thrasher 92 chip- alky turn on is set for 12 PSI- the...

:( Recently the ignition switch will not turn off, allow key removal, without working the floor shift back and forth several times. What and where is adjustment made to correct this condition? Thanks once again- Dave