Replaced Oil pressure Sender, Now car wont start

[speedyx14]

I own a '94 Firebird 3.4

The oil pressure has been low(20 psi at start up,and drops to 0 at idle when warm), so I took it to a shop today. They told me I had a faulty oil pressure sender that was leaking profusely(I originally thought it was a leaky oil pan) .I had them do the work(). So I picked up the car and started it. I got 60psi oil pressure that went down to 40 when warm.The oil was no longer leaking rapidly. Everything seemed perfect.

I take the car directly to the car Wash. Turn it on after the wash and WTF? The car begins to sputter, and cuts off. I keep on turning it and giving it gas and the longer I do it the worse it gets(to the point where It wont even move when givin' gas). First, it would start and stumble, but if I'd give it a little throttle to keep it running it dies.I heard some popping sounds when the trouble first began too. Within 30 minutes of getting my car back it won't move an inch. It was working fine before.

As of right now the engine will crank, but won't catch fire. I have enough knowledge to believe that it's not a weak battery.The oil level is good. I called the shop and the guy told me I was pretty much on my own. He said all he did was change the oil pressure sending unit. Would that cause my trouble?

I think a have a legit gripe with the shop(they haven't seen the last of me).If my car is okay,but then craps out within 30 minutes of them working on it, something is fishy.

[Mr. Logger]

Re: Replaced Oil pressure Sender, Now car wont start

You sure the coils didn't get wet?

[Archer]

Re: Replaced Oil pressure Sender, Now car wont start

Im going to have fun with this one and dont get pissy... but did you disconnect the battery or turn the ignition? lol


seriously, did you disconnect anything and not plug it back it? go in reverse on what you did... if it ran before, and putting a new sensor in wouldnt keep the car from running.

[speedyx14]

Re: Replaced Oil pressure Sender, Now car wont start

I can't say for sure that nothing got wet. I went to a do it yourself car wash. I even idled the car a little after I washed the car. but when I tried to drive, the madness began. I just disconnected the battery for a little bit, and the engine caught fire but quickly died. It does this when I disconnect the battery, but after a couple key turns it won't catch at all.

How do I tell if the coil got wet?

[Archer]

Re: Replaced Oil pressure Sender, Now car wont start

dude if your engine caught fire then you have bigger problems than your oil sending unit... looked for burnt wires arching against each other or the frame, look at all possible problems around the fire...

[speedyx14]

Re: Replaced Oil pressure Sender, Now car wont start

^ LoL. You are very funny. My engine didn't catch on fire. It turned over(started briefly).

[Archer]

Re: Replaced Oil pressure Sender, Now car wont start

u ****ing with me??? lol thats a camaro.. first rule of camaro club. no joking around with camaro in camaro club.. How dare you. lol


but seriously, you changed the unit and it wont start anymore. somehow the water could of gotten something wet. its possible.. turning it over could of flooded the engine, yes injectors can flood. but you knew that. I would let it dry out over night and try it first thing in the morning... let us know if you have the problem later on. somehow something got wet, thats not letting it get a spark, or it really flooded out. just changing a sensor wouldnt make the car run like crap. you said it ran fine out of the shop, did you just take it to the shop, or did you researched the shop first? you can call the BBB and ask for a review on the place. get more information about the shop if you believe they are at fault before assuming they are.

let her sit for a bit.. then try it again tomorrow.

Sorry to hear about her condition...

archer

[speedyx14]

Re: Replaced Oil pressure Sender, Now car wont start

^ Thanks for the suggestions. I will try to start it tomorrow. If it's not right, I will go back to the shop. All I know is that it was running fine before I took it to them. At the very least they could throw me a freakin' bone and tell me what my new problem is.

[cam98aro]

Re: Replaced Oil pressure Sender, Now car wont start

i dont think this problem has anything to do with the new sending unit

sounds like water got somewhere it shouldnt be..

[Archer]

Re: Replaced Oil pressure Sender, Now car wont start

i dont think this problem has anything to do with the new sending unit

sounds like water got somewhere it shouldnt be..

I second that.

[tkoforpresident]

Re: Replaced Oil pressure Sender, Now car wont start

probably a wet coil

[speedyx14]

Re: Replaced Oil pressure Sender, Now car wont start

Well I let the car sit overnight to dry if anything got wet, and the engine wouldn't start. I checked to see if the engine was getting spark from the ignition coil and it is. I hope the timing chain didn't jump because I heard some disturbing sounds when the engine died. The crazy thing is the engine has always sounded great no matter what. No rattling noises that would say "timing chain".Never had any problems starting the car.

[Archer]

Re: Replaced Oil pressure Sender, Now car wont start

its hard to believe that the chain jumped. any codes pop up?

engine needs 3 things to start
fuel
air
fire (spark)

I dont know what else to tell ya.is the oil sending unit still in the car? did they remember to put it in? I know its a stupid question, but there was a guy around my area that took his bike in for an oil change, and they forgot to put oil in it.

if its all there, then I dont know what else to say man..
besides take her back to the shop
Archer

[nascar24jd]

Re: Replaced Oil pressure Sender, Now car wont start

Well I let the car sit overnight to dry if anything got wet, and the engine wouldn't start. I checked to see if the engine was getting spark from the ignition coil and it is. I hope the timing chain didn't jump because I heard some disturbing sounds when the engine died. The crazy thing is the engine has always sounded great no matter what. No rattling noises that would say "timing chain".Never had any problems starting the car.

What disturbing sound did you hear when it shut off. A while back the large vacuum fitting on the top of the engine popped off on my 3.4. Car sputtered and died. I put the vacuum line back on and it started right up. Check for that, you never know. It is the large hose right in the middle of the top of the engine.

Otherwise, it is either wet coils, or wet computer.

[cam98aro]

Re: Replaced Oil pressure Sender, Now car wont start

did you check ALL of the coils for spark?

water that worked its way in will take a long time to dry out unless you dry it personally

i highly doubt your timing chain jumped unless you have 250k miles on the stock chain, the noise you heard was probably engine knock (like a rod trying to be forced back down) or valve train noise

when you try to start it, hold the gas pedal to the floor, it may be flooded out from the stalling/sputtering