Author Topic: Did we ever figure out the "Hot Start Problem" (Read 89299 times)

Burnall4 · « **on:** January 21, 2009, 01:02:57 PM »

Sorry to start a new thread but I have been gone for so long. I was trying to dig through the old threads but I was unsuccessful in my attempts to find a definitive answer.

Did we ever figure out why we have the Hot Start Problem. I have my car back now and I am about to do some work on it, so I was wondering, before I just jump in the engine like a vrigin on prom night; did we in fact find what cause the car to shake violently, stutter, have no ability to accelerate etc...after the engine was hot?

Thanks

Gray

AcSchnitzer318is · « **Reply #1 on:** January 21, 2009, 09:36:04 PM »

Nope, sorry Gray. I was hoping the fuse box thing would be the answer, but haven't heard anything since... let us know if you find anything.

Burnall4 · « **Reply #2 on:** January 22, 2009, 11:12:32 AM »

well in that case, here goes nothing....wish me luck I am going to start systematically rebuilding the engine...I will make a new thread and update when I actually start

AcSchnitzer318is · « **Reply #3 on:** January 26, 2009, 12:24:45 AM »

I do wish you luck... unfortunately I don't believe this problem has anything at all to do with the engine. It's going to be some other system or sensor I think. My motor did not do this in the last car it was in and has done it since the swap. My original motor did this as well, and has since been installed in another vehicle and has no issues.

nicknikolovski · « **Reply #4 on:** January 26, 2009, 02:39:41 AM »

I believe it will have something to do with the wiring harness between the engine ECU and engine sensors. Possibly some sort of continuity, earth problem etc.

sports.racer · « **Reply #5 on:** January 26, 2009, 09:47:30 PM »

Well I know what fixed mine and it will only help you if you hooked the mystery wire up like I did. I disconnected it and all is well.

Lower left corner of this graphic.

AcSchnitzer318is · « **Reply #6 on:** January 27, 2009, 09:51:42 AM »

Holy crap... that actually has a chance at being it. I think I remember hooking that wire up after the swap. Will take a look today. Thanks for posting that.

AcSchnitzer318is · « **Reply #7 on:** January 27, 2009, 11:16:14 AM »

UPDATE: I OWE YOU A CASE OF BEER OR SOMETHING!!!

As soon as I disconnected that wire I took the car for a drive to get it nice and warmed up. Shut if off and waited 5 minutes. It started back up perfectly with no hesitation or stalling. I've started it 4 times since and had no problems. It fixed it IMMEDIATELY and completely with no reset of the ECU or anything.

I can not tell you how frustrating this problem has been... LOL it feels like a brand new car now that I don't have to deal with letting it idle for 2 minutes before trying to drive it. Thank you again!

Burnall4 · « **Reply #8 on:** January 27, 2009, 12:45:19 PM »

WHAT WHAT WHAT ACSHNITZ! please tell me which whire it is!

FOUND IT!!!!!!!!

UNPLUGGED IT!!!!!!!

GOT THE CAR WARM AT IDLE (In my parking deck still at work)

Cut it off, turned it back on (i can get it to replicate the problem like this) and WOOOOOOHOOOOOO nothing, no hesitation, no anything just glass idle and accelration!!!!!

UPDATE! So far so good, have tested it out for the past hour doing some errands and not the first sign of any of my past problems!
if this is IT, like the fix! I will have to hook you up with something kind sir!!!!

EN318isPDX · « **Reply #9 on:** January 27, 2009, 04:08:30 PM »

Could someone be a little more clear about this? Perhaps circle the wire you are talking about in paint plz

xwill112x · « **Reply #10 on:** January 27, 2009, 04:40:55 PM »

i guess it is finally solved..

props to sports.racer

twright · « **Reply #11 on:** January 27, 2009, 05:06:44 PM »

I am currently packaging my first-born male son. Please provide shipping address so that I may send him to you.

I disconnected the wire from my car this morning and have started and stopped the car 6-8 times during the day.

The hot start rough running condition is definitely fixed!

I resurrected this car from the dead in October. (It had been sitting in a barn for 6 years with the engine out and disassembled.) During the reassembly, I specifically remember seeing the subject connector and wondering what it was for. I plugged it in, blindly, along with the other zillion disconnected wires.

I guess I shouldn't have connected this one. :confused:

To help those that don't know where this wire is: It is in the engine compartment, on the firewall, right in the center of the car. You have to remove the large plastic cover that covers all of the wires. If you remove this plastic panel and don't see a loose connector/wire, you have found the problem.

Thanks again Sports.racer. I would have never figured this out without your help.

EN318isPDX · « **Reply #12 on:** January 27, 2009, 06:53:19 PM »

So basically you look at the wire thats outside of the taped wires? I will have to check this out when i get home. I did basic paint to attempt to make it a lil more clear...

STICKY PLZ?

Burnall4 · « **Reply #13 on:** January 27, 2009, 08:58:40 PM »

EN318is, you got it that is the one!

WE need to make .racer the hero of the board

twright · « **Reply #14 on:** January 27, 2009, 09:00:28 PM »

You have the correct location.

If you see two wires that are unplugged, that's the way it should be and you haven't found the cause of any problem.

If you don't see any disconnected wires, find the black wire with the white stripe and disconnect it at the connector.