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Omega Help Area => Omega General Help => Topic started by: kenny71 on 26 February 2013, 20:51:07

Title: Back again...98 Catera wont start
Post by: kenny71 on 26 February 2013, 20:51:07
Ok last time i posted car wouldn't start...some wise people told me to check crank sensor THANK YOU, which i did and had to replace that , the line was melted into was only holding together by the plastic coating on the outside..But after changing that the car still wont start .. fuel pump not coming on so replaced the relay( Was told it was stuck) wasn't getting any power to the fuel pump fuse under dash ,changed fuse also..So now i have power can heard the fuel pump come on i try to start car it turns over but still wont start, check plugs no spark,check fuse under dash again, no power to fuel pump, fuel pump not coming on again...confused now help!!!!
Title: Re: Back again...98 Catera wont start
Post by: Lazydocker on 26 February 2013, 20:53:06
Did you use a genuine sensor?
Title: Re: Back again...98 Catera wont start
Post by: kenny71 on 26 February 2013, 20:54:36
advance auto....was think about that to...
Title: Re: Back again...98 Catera wont start
Post by: Kevin Wood on 26 February 2013, 20:57:07
First thing the ECU does when it detects cranking is to pull in the fuel pump relay, so I agree crank sensor is still in the frame.

Not sure if the ECU you got over the pond primes the fuel pump, but I believe the drive-by -wire cars here do. In that case you should hear the fuel pump run for a couple of seconds when the key is turned to position II. That will at least eliminate the fuel pump circuit from suspicion, and also prove that the ECU is getting power. (it has both switched and permanent 12v feeds, and a feed from the purple relay next to the fuel pump relay).
Title: Re: Back again...98 Catera wont start
Post by: Entwood on 26 February 2013, 20:57:35
Does the paperclip/pedal trick work on the catera ?? which engine is it ?? Any EML light on ?
Title: Re: Back again...98 Catera wont start
Post by: Steve B on 26 February 2013, 20:59:23
advance auto....was think about that to...
pattern part  :y
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/home___
Title: Re: Back again...98 Catera wont start
Post by: biggriffin on 26 February 2013, 21:11:08
Check all the large fuses in the ext box on top of the battery.
Title: Re: Back again...98 Catera wont start
Post by: symes on 26 February 2013, 21:20:53
if purple relay-fuel was shot check other purple relay not damaged too-thats engine control relay-paired wires according to wiring diagram lead back to crank sensor :y
Title: Re: Back again...98 Catera wont start
Post by: dbug on 26 February 2013, 21:32:59
Any codes?  Paper clip test?  Bet you get a 19 - crank sensor - should fit genuine ;)
Title: Re: Back again...98 Catera wont start
Post by: kenny71 on 27 February 2013, 18:38:30
ok switched cranksensor and car starts right up.....now the problem is when i rev to 2000 rpms the engine cuts back as if not getting gas ,put a test light on fuse for fuel pump while doing this and when it reaches 2000 rpms the fuse loses power ,cant rev car or drive the car over 2000 rpms it cuts back.....check engine light comes on but goes off as soon as you let off gas
Title: Re: Back again...98 Catera wont start
Post by: RobG on 27 February 2013, 18:39:47
ok switched cranksensor and car starts right up.....now the problem is when i rev to 2000 rpms the engine cuts back as if not getting gas ,put a test light on fuse for fuel pump while doing this and when it reaches 2000 rpms the fuse loses power ,cant rev car or drive the car over 2000 rpms it cuts back.....check engine light comes on but goes off as soon as you let off gas
and the code is??
Title: Re: Back again...98 Catera wont start
Post by: kenny71 on 27 February 2013, 18:42:42
doesn't show code...... the check engine goes away....and couldnt pull one while giving revs to car
Title: Re: Back again...98 Catera wont start
Post by: Lazydocker on 27 February 2013, 20:52:14
Switched to a new, genuine sensor or another pattern one ???
Title: Re: Back again...98 Catera wont start
Post by: dbug on 27 February 2013, 20:58:31
If you've fitted a genuine GM crank sensor try it with maf disconnected ;)
Title: Re: Back again...98 Catera wont start
Post by: kenny71 on 01 March 2013, 06:26:55
 replacement crank sensor is made by BWD.... someone replace the original and this one looks like the one i took off, heres the problem car starts good, idle is normal but if you try to go over 2000 rpms the car loses power the fuel pump dies out only can drive at about 10 mph.... So i figure try another crank sensor...local store out of stock has to order one for me...so i put crank sensor back on car so i can check it with my friends code reader (while i wait for another cps)....re try this time the car starts and cuts off in 1 sec.... ??? well now i do have some codes stored but wont be able to read until the morning..but could it be the crank sensor still? or something else
Title: Re: Back again...98 Catera wont start
Post by: Lazydocker on 01 March 2013, 09:05:25
You need the codes reading but the symptoms do fit :y

You need to fit a genuine Crank Sensor... Nothing else is reliable ;) It's not uncommon for pattern sensors to fail from new ::)
Title: Re: Back again...98 Catera wont start
Post by: tidla on 01 March 2013, 16:45:46
You need the codes reading but the symptoms do fit :y

You need to fit a genuine Crank Sensor... Nothing else is reliable ;) It's not uncommon for pattern sensors to fail from new ::)

Third time lucky.

There's a maintenance guide on here which highlights problems associated with incorrect crank sensors.
Title: Re: Back again...98 Catera wont start
Post by: kenny71 on 01 March 2013, 19:04:37
defected crank sensor...replaced and riding again....thanks  for the help  :y
Title: Re: Back again...98 Catera wont start
Post by: Andy B on 01 March 2013, 19:10:55
defected crank sensor...replaced and riding again....thanks  for the help  :y

Pattern  or OE?  ::)
Title: Re: Back again...98 Catera wont start
Post by: kenny71 on 01 March 2013, 19:27:55
Pattern ...BWD
 
Title: Re: Back again...98 Catera wont start
Post by: dbug on 01 March 2013, 19:28:50
Bet it diesn't last long ::)
Title: Re: Back again...98 Catera wont start
Post by: Andy B on 01 March 2013, 19:47:19
Pattern ...BWD

I hope you're getting your money back from all of these copy parts.  ;) ;) ;) Bite the bullet & buy one from your local fiendish Caddy/GM dealer  ;) ;) It'll be cheaper & easier in the end.  :y :y
Title: Re: Back again...98 Catera wont start
Post by: Lazydocker on 02 March 2013, 00:35:54
For the 6th time in this thread... Get a genuine sensor ;)
Title: Re: Back again...98 Catera wont start
Post by: 78bex on 02 March 2013, 01:02:18
............. how cool is this forum :y