944s2 89 engine start problem
05-14-2015 | 08:31 AM
#16
Drifting
Joined: Jul 2003
Posts: 2,401
Likes: 51
From: St Petersburg, FL
05-14-2015 | 10:47 AM
#17
Advanced
Joined: Oct 2009
Posts: 95
Likes: 0
From: scotland
Really stupid point .....
But what door did you unlock the car with.
My car will only start if you use the key in the drivers door to unlock the car. If you open the passenger side door with the key the car will not start until you have locked and unlocked the car with the key in the drivers side door.
Just a thought may be wrong but worth a try.
My car is also an 89 S2
But what door did you unlock the car with.
My car will only start if you use the key in the drivers door to unlock the car. If you open the passenger side door with the key the car will not start until you have locked and unlocked the car with the key in the drivers side door.
Just a thought may be wrong but worth a try.
My car is also an 89 S2
05-14-2015 | 11:28 PM
#18
Three Wheelin'
Joined: Jun 2001
Posts: 1,493
Likes: 347
From: Tokyo
I can see the tach bounce so the reference sensor is working. Do you smell fuel? You may want to pull the spark plugs, clean them and put them back in. I think they are flooded... Also check the connections at the AFM and igniter and ballast resistors.
05-15-2015 | 09:44 AM
#20
Thread Starter
Intermediate
Joined: Jan 2015
Posts: 34
Likes: 0
From: St.Petersburg
If you have good fuel pressure, that indicates that the DME relay is working. You only seem to get tach bounce for the first second or so of cranking, I suspect your reference sensors need replacement, those and DME relays end up causing the vast majority of difficult no-starts. Make sure to get Bosch, others have had some crazy issues trying to use alternative brands.
If you would like to do more debug first, you can try making sure that you don't have a short between the two wires in one of the injector plugs. If you can verify that you don't have spark and the injectors aren't firing that will definitely point towards the reference sensors, or far less likely a bad DME.
If you would like to do more debug first, you can try making sure that you don't have a short between the two wires in one of the injector plugs. If you can verify that you don't have spark and the injectors aren't firing that will definitely point towards the reference sensors, or far less likely a bad DME.
05-15-2015 | 04:22 PM
#21
Thread Starter
Intermediate
Joined: Jan 2015
Posts: 34
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From: St.Petersburg
Mine did a similar thing - I started out doing the DME bypass - - I could hear my fuel pump buzz - but no start. Then I bypassed my factory alarm and it started right up. DO NOT USE the procedure on Clark's Garage - the 1989 S2 is different. Us the version for the Turbo I'll see if I can post a link
05-15-2015 | 04:26 PM
#22
Thread Starter
Intermediate
Joined: Jan 2015
Posts: 34
Likes: 0
From: St.Petersburg
Really stupid point .....
But what door did you unlock the car with.
My car will only start if you use the key in the drivers door to unlock the car. If you open the passenger side door with the key the car will not start until you have locked and unlocked the car with the key in the drivers side door.
Just a thought may be wrong but worth a try.
My car is also an 89 S2
But what door did you unlock the car with.
My car will only start if you use the key in the drivers door to unlock the car. If you open the passenger side door with the key the car will not start until you have locked and unlocked the car with the key in the drivers side door.
Just a thought may be wrong but worth a try.
My car is also an 89 S2
05-15-2015 | 04:32 PM
#23
Thread Starter
Intermediate
Joined: Jan 2015
Posts: 34
Likes: 0
From: St.Petersburg
I don't smell any fuel. I have checked and cleaned spark plugs. I also have checked AFM connector wires from DME - all 4 connectors have good ping. What do you mean by igniter and ballast resistors?
05-15-2015 | 11:14 PM
#24
Instructor
Joined: Apr 2014
Posts: 235
Likes: 9
From: Creede, CO
ArtSergio,
I went through a very difficult no start recently. Before you begin searching for the problem, make sure you know why your car isn't starting. Are the plugs wet with gas? Pull off your injector rail, crank over the engine (after making sure that there are no possible sources of ignition) and observe if the injectors are spraying fuel. Check to see if the cam timing mark aligns with the OT mark on the flywheel. Use a timing light to check that the spark occurs at the right time.
When you know why it doesn't start you will vastly narrow down what is broken and how to fix it.
Perry
I went through a very difficult no start recently. Before you begin searching for the problem, make sure you know why your car isn't starting. Are the plugs wet with gas? Pull off your injector rail, crank over the engine (after making sure that there are no possible sources of ignition) and observe if the injectors are spraying fuel. Check to see if the cam timing mark aligns with the OT mark on the flywheel. Use a timing light to check that the spark occurs at the right time.
When you know why it doesn't start you will vastly narrow down what is broken and how to fix it.
Perry
05-16-2015 | 12:38 AM
#25
Drifting
Joined: Jul 2003
Posts: 2,401
Likes: 51
From: St Petersburg, FL
05-16-2015 | 06:39 PM
#26
Thread Starter
Intermediate
Joined: Jan 2015
Posts: 34
Likes: 0
From: St.Petersburg
I have replaced fuel in tank (car hasn't started for few month), spark plugs, spark wires, ignition cover, ignition module, , wires to Hall sensor, and... car ran! I don't know what exactly the reason was, I will keep an eye on it.
Thanks to everyone!
Thanks to everyone!
05-17-2015 | 12:06 AM
#27
Burning Brakes
Joined: Jul 2010
Posts: 1,103
Likes: 55
05-17-2015 | 03:40 AM
#28
Thread Starter
Intermediate
Joined: Jan 2015
Posts: 34
Likes: 0
From: St.Petersburg
Check this out. https://rennlist.com/forums/924-931-...-the-s-s2.html