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post #1 of 8 (permalink) Old 08-13-2012, 03:18 PM Thread Starter
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Question 94 3.3L trouble

hey guys

i just bought a 94 3.3l 'trep a few months ago. i put a few thousand miles on it (its now around 182,000 miles) without any issues - until last week.
it was raining at the time (not a big deal where i live) and i had just left for work, and the car stalled in the middle of an intersection. the only warning i had was about a minute of rough idling. i pushed it to a gas station and was unable to start it. after i let it sit for awhile i was able to drive it aobut 3/4 of a mile down the road to a spot that i could keep it for awhile.
the car has a new PCV valve/hose, fuel pump, radiator hose, camshaft position sensor, and air filter box. i did the CEL-key-turn thing and the only code (other than 12 and 55) i got was 54, hence the new camshaft position sensor. upon replacing the sensor, the CEL turned off and hasnt come back on. i took the EGR valve out and theres no sign of damage. in the last week, i've started her up a few times, and it idles between 700 and 800. when i feather the gas to about 2000, it pings just below the driver seat (at least it sounds like it) and a little water comes out of the exhaust. if i slowly release the gas, the rpms drop to about 200 and then go back to 700, however, if i let go of the gas quickly the car stalls completely. i am able to start the car again after it stalls. additionally, the oil lamp on the dash is lit up, but i know the oil level is fine (i just changed it and have checked it numerous times).
i asked a friend if water in my intake or exhaust was causing the issue and he told me that water in the intake wouldnt come out of the exhaust. There were also a few times where there was a loud "pop" coming from the air filter box, but it hasnt happened since i replaced the cam position sensor. i inspected the engine compartment and found a broken ground strap. theres also a very potent fuel smell.
im new to driving and to cars in general, so any assistance you guys can offer would be awesome, thanks!

PS: if i could afford to take the car to a shop i would have done so already.

Last edited by Vykk Draygo; 08-13-2012 at 03:30 PM. Reason: forgot to add info
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post #2 of 8 (permalink) Old 08-13-2012, 09:03 PM
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map sensor? try plugging/unplugging and see if there is a difference.
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post #3 of 8 (permalink) Old 08-13-2012, 09:06 PM
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replace the CRANK senser, easy to do,, the cam and crank sensor , are in the same line,,, so to speak,,
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post #4 of 8 (permalink) Old 08-14-2012, 12:36 AM
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crank sensor causes no start.
could be a vacuum leak too.
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post #5 of 8 (permalink) Old 08-14-2012, 08:06 AM
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Loosing idle also makes me think of vacuum leak or throttle position sensor.
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post #6 of 8 (permalink) Old 08-14-2012, 09:21 AM Thread Starter
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thanks, ill try these out and let you guys know what happens.
oh and ive explored the possibility of a vacuum leak, i just dont know how to check for a leak. should i just spray to hoses with water and check them like a tire?
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post #7 of 8 (permalink) Old 08-14-2012, 09:54 AM Thread Starter
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so far ive replugged the MAP sensor. after consulting the manual i noticed that my MAP sensor is for a 3.5l engine. will i need to replace the sensor?
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post #8 of 8 (permalink) Old 08-14-2012, 02:39 PM
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if it fits, it sould work. i should have been clearer. start the car, then unplug it. see if it changes the operation during idle. then plug back in. if there is no change, then it's at fault.
vacuum leak checking- spray with carb/throttle body cleaner around the intake, etc, where ever a leak could be. a change in operation indicates a leak( stumble, rev up, etc.)
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