cranks too long before it starts
Thread Starter
Intermediate
Joined: Oct 2008
Posts: 38
Likes: 0
From: Acworth Georgia
cranks too long before it starts
Hey,
Thanks to this forum I've got my white 89 back on the road. I searched through old posts and realized my injectors were causing my problems. Prior to this I changed out plugs, wires, coil, cap, and rotor. The ignition module was done in Dec.
I got some from FIC and also swapped out the EGR and fuel pressure regulator as well.
Now the car is running
But....it needs to be cranked several seconds before it catches. Also it has a slight hesitation at mid RPMs.
Any help would be appreciated.
Thanks to this forum I've got my white 89 back on the road. I searched through old posts and realized my injectors were causing my problems. Prior to this I changed out plugs, wires, coil, cap, and rotor. The ignition module was done in Dec.
I got some from FIC and also swapped out the EGR and fuel pressure regulator as well.
Now the car is running
But....it needs to be cranked several seconds before it catches. Also it has a slight hesitation at mid RPMs.
Any help would be appreciated.
Last edited by 89 Jaws; Aug 19, 2010 at 08:46 AM. Reason: left something out
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Burning Brakes
Joined: Jul 2006
Posts: 1,080
Likes: 2
From: Pittsburgh PA
Once you check all the other stuff (Probably a mechanical issue somewhere if it used to run good and now doesnt), you can adjust the number of crank pulses before fuel is fired in the chip if you can burn your own stuff.
Has helped my motors fire up sooner without as much cranking.
With new injectors they may have new spray patterns so could need some tweaking during startup in the chip bin.
Has helped my motors fire up sooner without as much cranking.
With new injectors they may have new spray patterns so could need some tweaking during startup in the chip bin.
Thread Starter
Intermediate
Joined: Oct 2008
Posts: 38
Likes: 0
From: Acworth Georgia
the fuel pump is working. tonight it started up quickly twice and slowly twice ?!?
i've disconnected the battery in hopes of helping the computer learn the new injectors
i'll keep ya'll posted
i've disconnected the battery in hopes of helping the computer learn the new injectors
i'll keep ya'll posted
Burning Brakes
Joined: Oct 2001
Posts: 911
Likes: 5
From: TN
quick start
try turning your ignition to only on for a few seconds, then crank it.
I have had my 85 since 1992 and learned if I would just turn the key to on, I could hear the fuel pump pressure up and hear the relay under the hood make an audible noise. When this was complete, I would crank it, starts immediately every time hot or cold. 105,000 miles on it now.
I have had my 85 since 1992 and learned if I would just turn the key to on, I could hear the fuel pump pressure up and hear the relay under the hood make an audible noise. When this was complete, I would crank it, starts immediately every time hot or cold. 105,000 miles on it now.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Start up pulse depends on Coolant Temp Sensor - scan it after it's sat overnight to see what that signal is - should be ambient. Then start it to verify that it increases to the thermo threshold, at which point it should drop a degree or two before rising to the threshold for Main Fan operation or 226. Turn it off and see what it does. Some of ours have gone haywire, toggling shortly after startup to something above the Main Fan threshold which made cold/cool starts delayed. After troubleshooting it was the ECM, but you can always plug in a replacement CTS to see what that shows on your Scanner - if it's still haywire, that's a pretty good sign that it isn't the Sensor.
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Thread Starter
Intermediate
Joined: Oct 2008
Posts: 38
Likes: 0
From: Acworth Georgia
Thanks,
I haven't had alot of time to troubleshoot. Fuel pump is working and the CTS is working fine. (that was the problem a couple of years ago
I have reset the TPS and timing. I have a feeling it is something simple but I can't find it....yet!
I haven't had alot of time to troubleshoot. Fuel pump is working and the CTS is working fine. (that was the problem a couple of years ago
I have reset the TPS and timing. I have a feeling it is something simple but I can't find it....yet!
