rich7671 Posted September 11, 2004 Report Share Posted September 11, 2004 My 95 Lumina 3.1 stopped running back in February. It was running perfectly, drove it home and parked it, went out the next day to start it, and it hasn't started since. It sounds like the timing is off, so I replaced both crankshaft sensors and the camshaft sensor. Last year I replaced all three coil packs, and the ICM. I took the ICM and had it checked, and it checks out OK. I tried putting on the old coil packs thinking maybe one of the new ones was bad, but no luck. I removed all the spark plugs, all were fine. Put new plug wires on, still no start. I hooked up a timing light to each plug wire and spark is OK on all. I'm getting fuel and spark, but no start. So, I'm going to have to tear into the timing chain and gears. My question is, do I need to remove the oil pan and half of the suspension like it says in the Haynes manual, or is it pretty simple to just take off the timing chain cover and replace the chain and gears if I need to? Anything I haven't thought of or need to look at before I tear into it? By the way, I put in new head gaskets, intake & exhaust gaskets last October. Quote Link to comment Share on other sites More sharing options...
midnight rider Posted September 11, 2004 Report Share Posted September 11, 2004 Sounds like it is a timming issue. Quote Link to comment Share on other sites More sharing options...
rich7671 Posted September 11, 2004 Author Report Share Posted September 11, 2004 The Haynes manual says that I have to dismantle half of my car to replace a timing chain (suspension, oil pan, etc). Can anyone who has replaced a timing chain or belt on a 3.1 tell me how involved it is? It looks like I can just remove the power steering pump and get to the timing cover. I also forgot to add in my original post that I got a computer from the junkyard last weekend and that wasn't the problem, either. Quote Link to comment Share on other sites More sharing options...
midnight rider Posted September 11, 2004 Report Share Posted September 11, 2004 Believe me, It's worth the cash to have a mecahanic do it. The book is very right in this case. Quote Link to comment Share on other sites More sharing options...
R Dubya Posted September 11, 2004 Report Share Posted September 11, 2004 Yeah, unfortunately in order to remove the timing cover the oil pan must come off. The oil pan gasket runs across the timing cover and then is torqued down. Quote Link to comment Share on other sites More sharing options...
SleeperRed90TGp Posted September 11, 2004 Report Share Posted September 11, 2004 The oil pan does not have to come off. Just back off the first couple of screws for the oil pan and pry the botom of the timing cover straight off until it clears the dowel pins. Piece of cake. I would be looking down my oil fill hole to see if the valve train is turning. Do you have oil pressure when your cranking it? If so your chain is not broken. Check that out, if ok post back and we can go through the timeing process to see if it's jumped a tooth or two. Or may be someone else can walk you through the process. I gotta go. Jud Quote Link to comment Share on other sites More sharing options...
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