If the engine has been converterd to methanol, has the ability to breath in & out been modified accordingly? Details if you would please. I’, also womdering what has been done to the heads. Many regular shops won’t have the experience to diagnose an engine like this. Try a speedshop that races their own vehicles. Perhaps a bit of work with an analyzer and a good diagnostician would be a wise investment. I’m wondering why you’re assuming the Scanmaster programming is operating properly. In addition to the failure to rev being caused by an inability to breath out or an insufficient fuel supply pressure, recognize that a failure to advance the ignition timing could also limit the ability to rev. A voltmeter won’t tel you anything about the pulses. “Checked readings on all wires with volt meter and all is fine. Not the throttle position sensor because it would fire up even with a bad throttle sensor. Pulled apart the Cam sensor and made sure it wasn’t missing any teeth.
Scanmaster for grand national code#
Wasn’t the turbo because the turbo doesn’t spool up before 3500.Ĭan’t get a code off the computer (doesn’t have any).Ĭhecked readings on all wires with volt meter and all is fine. Not the engine because when it was running, it ran very smooth and had no issues, but it wouldn’t run past 3000. Compression Test : Has 190 lbs.įuel: 60 lb injectors and runs right off idle (60 lbs all the way through) Tried: Every fuse, clean gas & fuel filter, every wire (no breaks), checked sparks (spark all around), new coil pack, new 02 sensor, new cam sensor, new crank sensor, new computer, cleaned out map sensor. Problem: Car wasn’t originally revving past 3000 and now it won’t even fire up. From the bottom of my heart, I would appreciate anyone who can help him out! He’s so frustrated at this point and is forced (gasp) to drive around in his mother’s minivan while his Buick remains in the bay. Please read everything he and the mechanics have already attempted. It has a heavy duty timing chain, professionally built. It runs meth injection and Scanmaster programming. A while ago, he bought a 1985 Buick Regal – Engine 1987 Grand National (GNX) 60 Trim turbo.
I’m praying there’s someone out there who can figure this out because no mechanic has been able to. My son has been a car fanatic for years and works hard to support his passion.
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