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  • avatar dulinaa 07/10/10 11:45 am PST

    No one likes going backwards but obviously your going to have to retrace your steps. Try the old oil pressure switch, its part of the fuel pump circuit. Did you pull the distributor out to get to the pressure switch? It may not be timed correctly.18436572 drivers side front is cyl. 1,3,5,7 passanger side front is cly. 2,4,6,8. WIll it start up on starting fuild? Check for spark at the plug end. You may have the rotor screwed on backwards. I see you wrote control valve. Is that and idle air control valve, because thats what I would change first. But not before trying to clean up the old one first with some thottle body cleaner and a battery post brush to use in the hole. And check for any other intake vacuum leaks. The valve head and seat get clogged with gunk. If a good cleaning doesn't work, replace it.

Answers

  • dulinaa 07/10/10 11:45 am PST

    No one likes going backwards but obviously your going to have to retrace your steps. Try the old oil pressure switch, its part of the fuel pump circuit. Did you pull the distributor out to get to the pressure switch? It may not be timed correctly.18436572 drivers side front is cyl. 1,3,5,7 passanger side front is cly. 2,4,6,8. WIll it start up on starting fuild? Check for spark at the plug end. You may have the rotor screwed on backwards. I see you wrote control valve. Is that and idle air control valve, because thats what I would change first. But not before trying to clean up the old one first with some thottle body cleaner and a battery post brush to use in the hole. And check for any other intake vacuum leaks. The valve head and seat get clogged with gunk. If a good cleaning doesn't work, replace it.

  • kosashawn 07/10/10 12:06 pm PST

    the distributor was not taken off to put the switch on he just started putting wires on and he didnt put them in on the right order then i put them back in the right order and it wouldnt fire so we bought new wires just in case one fouled out but when i put the rotor in there was a little pice that slides on to the rotor that wasnt on the other side so i did it that way i can recheck it just in case but it is new and cap is new i put the wires back on the new cap and still no fire but maybe trying the old part will work although that is what we thought the problem was, after trying the other things. yes we put the idle control valve on which was next to the throttle body positioning sensor. i dont think he checked the valve head and seat but will see , i will try putting old oil pressure switch back on if thats not it i was reading other stuff and maybe oxygen sensor?


  • kosashawn 07/10/10 1:28 pm PST

    ok so i tried cleaning the old oil pressure switch and put it in and it is doing the same thing the other is, i saw a flame come up when trying to start it so i am guessing the problem is not in the switch is it possible someone set it up to fire differently then what the engine says to i dont have a clue about them myself but my boyfriend doesnt have a clue either

  • 0patience 07/10/10 2:27 pm PST

    Be certain that you are getting fuel to the throttle body.

    How did you determine that it is getting fuel?

    The oil pressure sender does not energize the fuel pump until the engine starts.
    The fuel pump relay energizes the fuel pump until the oil pressure sender takes over.
    If you tap lightly once on the fuel pump relay, will it want to start?

    Gave you tried pouring a capful of gas in the throttle body to prime it and see if it wants to start?
    If it does, then you have a fuel problem.

    Have you checked for spark?

  • kosashawn 07/10/10 2:37 pm PST

    ok well we were not getting fuel to begin with that was the problem so like you said pour capfuls of gas which is what we did to get it home from down south and i made it back doing that but now we are getting fuel after putting the new injector in and truck was running but was still shut down we read up on some problems the oil pressure switch sounded like the problem but after changing it now it wont fire up at all but will crank he mixed up the wires but we put wires back on in order what the engine says they are suppose to be in wont fire, put old switch back on still wont fire read up some more today possibly the oxygen sensor or ignition coil may now be a problem i dont have a clue its a big headache but we only have one other vehicle and have to get this one going again since one has to work and i have to have one for the kids probably putting those 2 things on today hopefully one will work there is nothing wrong with the fuel pump i can hear the whine when i turn the key not sure about the relay i guess that will come next

  • kosashawn 07/10/10 7:10 pm PST

    its back firing and actually caught fire anyone any clues before we have it towed to a mechanic

  • dulinaa 07/10/10 8:15 pm PST

    Sure sign distributor/firing order is off. Ok you need to TCD #1 cyl. The #1 cyl is the forward most driver side. Remove the spark plug. Using your finger in the spark hole, rotate the engine until you feel air squeeze out passed your finger. This is compression stroke. Use a screwdriver and carefully put it in the spark hole. Rotate the engine until the screwdriver rises up out of the hole the most. This is TDC#1 compression stroke. Remove the distributor cap. The rotor needs to be pointing at the #1 post on the cap. Its usually on the front half of the cap. Wires go clockwise, 18436572. If you take the cap off, and notice the rotor is at #6, your either on the wrong stroke for #1 and rotate the engine 180deg or try unscrewing the rotor and flip it 180 deg.

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