hey guys obviously i got a problem the neon throws me a code 11 but i take the car to two different mechanics and personally verified the second time that the timing marks were ok , and still have the problem , so someone said that could be the cam or the crank sensor , but how do i know wicht one is, they also tell me that without any of those sensors the car just wont be able to start , but the car is running so , im a little lost, thanks in advance
dodgeneonACR98
07-31-2008, 02:16 PM
Did anyone hook it up to the scanner that reads the codes? It should give you a more direct answer than just doing the key trick and getting code 11.
If the time belt is ok then you will be looking at the crank or cam sensors. Autozone can run the scanner on it and they do it for free. Good Luck with it
scottrachel01
07-31-2008, 03:06 PM
Mine was one notch off at the crank. Ran ok but sluggish and also got a code. Did you have any work done lately? Dohc or Sohc?
jdlee
07-31-2008, 04:26 PM
thanks, yeah they hook it up to the scanner a give me the P1390 code manufacturer controlled ignition system or misfire so, i look in other pages and some says the code its for the sensors and others says its for the timing belt, the ones that said its the sensors also said that if any of the two sensors cam or crank if faulty the car just cant start but my car runs so im a little lost, saddly i dont live in the us so no Autozone here
jdlee
07-31-2008, 05:05 PM
the car is a 1999 dohc neon sport ATX and yes it began to show the code after the first mechanic change the rod bearings , i really dont know if he assamble again right , so i change the timing belt again with another mechanic and the mark were ok but the code is still standing, is there a way that for some reason the marks on the cam gears aling but the cams are not really aling on the inside, dont want to sound stupid but i lost nothing asking
dodgeneonACR98
07-31-2008, 08:22 PM
Unless the mechanic installed the cams wrong to begin with they should be right. Cams dont just jump time. If you want to be sure if the cams are installed right you can turn the engine till the time marks line up then pull off the valve cover. There should be a hole on each cam faced up. I seriously doubt thats the case tho. Im not sure but I would think that a cam or two being off 180* would be certain death for the engine.
I am just as confused as you realy! Seems to me that the car wouldn't run if the crank or cam sensor was bad. You might try to trace the wires down to the sensors. Maybe one has worn and is grounding out. The one sensor by the alt is the crank sensor I belive. Those wires run close the exhaust.
Just out of curiosity, have you cleared the code from the PCM? If not it won't go away. Atleast I wouldn't think. If not you can do it by pulling the fuel pump relay and fuse for about 30 sec. This will reset the PCM and it will not kill your radio, clock,ect.
Someone here will have the answer your looking for! Good Luck
sohc98
08-01-2008, 12:45 AM
Id try the fuel pump fuse and see what that does for ya and if the code comes back then you know something is deffenatell wrong. If the crank and or cam sensors are bad the engine will just turn over for ever but not start. Although people on the org think that it will start but die a few seconds later. You say it showed after the rod bearings were changed, like right after? If so id say your problem is being caused by that. If not its a place to start looking.
hemimech
08-01-2008, 12:01 PM
Info I have: P1390 (M) Timing Belt Skipped 1 Tooth or More Relationship between Cam and Crank signals not correct.
I would check the cam timing again...sorry. Use a good TDC indicator and the tool to hold the cams in the proper position. If you can't find the cam tool locally make one out of thick flat stock(say 1/2") with two 8mm (5/16") holes drilled 130.5mm (5-1/8") mm apart. Then drop in two M8 bolts that have enough length to engage deeply with the holes in the camshafts. It's really easy to have the intake cam advanced one tooth & the exhaust cam retarded one tooth and the marks appear to align up.