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      'How-To' articles and basic information for those who are new to the W-Body platform.

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      This is the place to talk about brakes, suspension, lowering, wheels, tires, basically everything that affects your car's ride and handling.

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    1. Turbo Grand Prix

      This forum is for enthusiasts of the rare 1989-90 Pontiac Grand Prix Turbo.

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      A forum for information and discussion about the Oldsmobile Cutlass Supreme Convertible

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  • Posts

    • j_train5344
      First and foremost, 🖕. That response wasn't warranted at all.  Second, thank you so much white93z34 for all the tips. Truthfully, I should've started with the gaskets, plugs, and wires just to isolate any issues with the timing belt. I may not have the issues I have had I done that. Knocking the motor down to the LIM on a GM is something Ive done multiple times. I'm comfortable with that. Timing belts got me spooked. Third, I've verified the map and coolant sensors are connected along with the vacuum to the map sensor. I've got good stream to the fuel rail at the Schrader valve. The battery's been charged. The tach needle doesn't move on crank. I've yet to test the other things suggested. Fourth, I can get the car started by depressing the gas pedal all the way and keeping the rpms high for a bit. The car will stay running. But it runs like shit and won't restart without doing the same thing again. The exhaust smells like gas a bit more than I'd like too. Last, the fuel filters on the short list. I've only owned the car 3 weeks
    • Bake82
      Good idea!  It sucks for sure, but sounds like there will be a few things to do that will be easier with the subframe out of the way.     100% get an engine support bar or make one, It'll be way better.  I did one with an engine hoist one time, and it was just a pain in the rear because the hoist legs were just in the way! 
    • White93z34
      You don't "need" a scantool, necessarily, Its a 93' its not that smart in the first place. Qucik and dirty oldschool should get you pointed in the direction. These methods served me well for years. I'm saying this as someone who owns all the diagnostic equipment at this point in my life. Are the plugs fuel fouled? if they are that's a problem, New or not if they are soaked in gasoline they won't do much, pull it out if its wet and smells like gas then yeah Do you have injector pulse? One bad injector can bring the other 5 down with it. Its not uncommon for them to fail as the cars get older and older. To check it, pull the cover off the fuel rail, unplug an injector any injector. get yourself a 194 lamp unfold the leads and stuff them in the injector harness, does it flash while cranking? if it does plug the injector back in and move to another of the front 3 and repeat, this will rule out the one you just disconnected as being bad Make sure the battery is up to the task, the ECM won't run under ~9v or so.  is the tachometer needle moving when you're cranking if not its an indication that the crank sensor could be bad Check fuel pressure, put a small flat blade screwdriver to the schrader valve on the fuel rail, do you get a forceful ejection of gasoline with the depression while the key is on? its probably ok  pull the vacuum line off the fuel pressure regulator, does fuel come out of it? if so thats a problem. if you happen to have a small hand vacuum pump pull a vacuum on the regulator if it won't hold any vacuum, thats also a problem Next lets get into the weeds a bit more, the map sensor is located behind the upper intake, is everything connected properly, if its unplugged the car won't start Coolant temp sensor is it connected, if its unplugged it thinks the coolant temp is around -40 or -50 degrees and can often lead to flooding and not starting I mean you did a heap of work to the car do a general sanity check to make sure nothing you did could have caused it. Hope this helps.    
    • Schurkey
    • cutlassman
      I appreciate all the advice. I’ll bite the bullet and drop the pan. The engine support bar is a great idea. A new oil pump makes sense and the power steering lines are leaking a bit, so I’ll knock those out, too. Might as well check out everything else while I’m in there. 
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