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82 with no history will not start. Fixed low fuel pressure replaced leaking injectors. have 14psi fuel pressure. Test equip will not communicate with ECM cannot retrieve codes even with paper clip and there is this tan sludge puddles on ECM circuit boards. Injectors are firing but not with enough fuel to start. Also no primer shot. Replaced coil cap and ICM Engine will run when squirting in extra fuel. I checked all connectors and I have a tach signal.
Last edited by Dave Witman; Sep 23, 2022 at 06:32 PM.
Sounds like the ECM isn't powering up. Check both ECM fuses in the battery box and under the dash. Also check to make sure that the ECM is grounded at the intake manifold and the edge card connections at the ECM are good before condemning the ECM.
Edit: the battery box ECM fuse "should" be good if you are getting fuel pressure.
Last edited by Fly skids up!; Sep 23, 2022 at 05:41 PM.
I believe that "goo" is an old form of what is called staking, either from assembly or old repair, was more common on coils and larger components.. What appears to be a diode running across the IC is either an after-thought or a fix. Quick check of the ECM is to just turn the ignition to on and see if the check engine light comes on.
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
I'm assuming you must be the owner of the 82 vs. the shop that I talked with that actually has your car in for maintenance. It isn't a fuse causing the issue since your CEL light comes ON, which would negate the ECM fuse in the battery box and the CEL stays ON and you can not check any codes or respond to an ALDL cable connection. You also have an injector issue and your pressure is at 14psi, so that's not causing the issue. I would have to say after talking with your shop that your ECM is bad and from that pic and the pics that were sent to me by your shop that the ECM has had some work done to it in the past and is not a GM stock ECM, since the factory does not do that on any 82 ECM that I have ever looked at to date. It also appears that you have other wiring issues that desperately need attention. If your ECM is bad, the EBL WILL fix the issue as long as there are not any other issues with your wiring dealing with the ECM. I am slightly skeptical after hearing about the other wiring issues at this point though. GL with your 82.
82 with no history will not start. Fixed low fuel pressure replaced leaking injectors. have 14psi fuel pressure. Test equip will not communicate with ECM cannot retrieve codes even with paper clip and there is this tan sludge puddles on ECM circuit boards. Injectors are firing but not with enough fuel to start. Also no primer shot. Replaced coil cap and ICM Engine will run when squirting in extra fuel. I checked all connectors and I have a tach signal.
Originally Posted by Buccaneer
It isn't a fuse causing the issue since your CEL light comes ON, which would negate the ECM fuse in the battery box and the CEL stays ON and you can not check any codes or respond to an ALDL cable connection. You also have an injector issue and your pressure is at 14psi, so that's not causing the issue.
I didn't see any where's in the OP's post about the check engine light staying on, just that he wasn't able to retrieve codes. I do believe though the OP needs to approach this problem first by finding out why he can't communicate with the ECM with a scan tool. It's very hard to troubleshoot problems over the internet because people who post are really not mechanics and really have no idea what to look for or even how to communicate with others what's going on. The OP also mentioned that he had leaky injectors. Well it may just be fouled/wet spark plugs. If he was able to communicate with the ECM he would also know if it's coolant sensor a supplying the ECM with the proper temperature or any of the other sensors for that matter.
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Originally Posted by Fly skids up!
I didn't see any where's in the OP's post about the check engine light staying on, just that he wasn't able to retrieve codes. I do believe though the OP needs to approach this problem first by finding out why he can't communicate with the ECM with a scan tool. It's very hard to troubleshoot problems over the internet because people who post are really not mechanics and really have no idea what to look for or even how to communicate with others what's going on. The OP also mentioned that he had leaky injectors. Well it may just be fouled/wet spark plugs. If he was able to communicate with the ECM he would also know if it's coolant sensor a supplying the ECM with the proper temperature or any of the other sensors for that matter.
I didn't see any where's in the OP's post about the check engine light staying on, just that he wasn't able to retrieve codes. I do believe though the OP needs to approach this problem first by finding out why he can't communicate with the ECM with a scan tool. It's very hard to troubleshoot problems over the internet because people who post are really not mechanics and really have no idea what to look for or even how to communicate with others what's going on.
If you would have read my post thoroughly... You would have noticed that I mentioned that I SPOKE TO THE SHOP where the car is at now to be fixed. The OP DID NOT fully explain the issues far enough and put all the info in the post. The leaky injector issue is fixed by the shop according to the owner of the shop as of yesterday. The shop believes as I do that the ECM is bad. The ECM will NOT communicate at all, so using a scan tool of ANY type IS useless at this point.He DOES have other wiring issues as well that makes me a tad skeptical of the OP issues, but not necessarily related. Melted wires IS a huge concern to me! Again, that part was left out of the first post.
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
UPDATE: An EBL was installed in the car today and it fired right up, NO CEL light confirmed by the shop. They say the car runs well. I say...adjust FP to 13psi and the timing to GM spec of 6* and the tune will perform very well. The reason for the no communication is, ECM was bad. Enjoy!
UPDATE: An EBL was installed in the car today and it fired right up, NO CEL light confirmed by the shop. They say the car runs well. I say...adjust FP to 13psi and the timing to GM spec of 6* and the tune will perform very well. The reason for the no communication is, ECM was bad. Enjoy!
82 crossfire will not start
