| Electrical type stall | |
|
|
Author | Message |
---|
sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Electrical type stall Thu May 16, 2013 2:42 pm | |
| Matts car...95 Imp Running fine for 6+ months after full tuneup Lately....out of nowhere (but only when its hot) comes a random stall One day, he'll make 2 or 3 trips then, on the 4th....it'll shut down Happens even when he's moving (but at 10-15mph not 50) Re-starts no problem. One time he had to do this 3 times. Whatcha think? If you have time here's more info? 1st time I found no fuel pressure Measured 8.5V at the feed side of the harness ..wtf?. Jumped the 12v red wire & had 12 @ the connector. The gray power wire of the connector was not pinned tight in its housing, so I fixed that , connected, primed with the 12V red wire & heard the fuel come into the rails. Disconnected 12V prime wire & all was fine. Hoped it was the connection. I took it out & ran it last night after checking everything parts, harnesses, fuses...ran fine, for what it is. I tried to make die & it wouldnt. I have him take me around later & 2 stops out, it dies at a light, restarts no problem & didnt do it again. He seems to think its like an electrical cutout but I think he may just see the dash drop out when it stalls.
Some extra info Changed out the coil & ICM with known good....same (yes...heat sink compound applied) swapped out the FP relay with known good..same Fuses good, all fuse box connections (pwr stud & bus=good I had rebuilt the opti with original sensor & housing, new rotor & cap but a no name source (brass contacts) Opti harness & vent/vacuum good RMS ES381 pump w/ new sock, FLS1072 sender installed 8/09 with 2 years of being parked many miles after that There's more but this is WAY to long
Looking for someone to say....mine did the same thing & I found "xxx" I'm thinking either go back in after the fuel pump(but not until I see a no prime or low pressure happen) Or put a cap & rotor on the opti but damn....only time I had a failure was a long crank in the wet = opti
| |
|
| |
MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: Electrical type stall Thu May 16, 2013 2:57 pm | |
| That's a very interesting situation. Only when it warms up? Usually cold/wet, like you said = opti.
I would have said coil/ICM but you said you tackled that.
I'd say, and I know it's a job and a half, swap out the fuel pump with a kown good one and go from there.
Sorry, I have not (yet) had this problem.
I know it sounds dumb and repetitive, but absolutely double and triple check those damn grounds on the drivers side head. It took me an (inexperienced) year to find that problem on the '95 I had.
| |
|
| |
95brmw
Posts : 1434 Join date : 2009-11-10 Age : 39 Location : Connecticut
| Subject: Re: Electrical type stall Thu May 16, 2013 5:09 pm | |
| 2 things come to mind, could be a weak connection at the coolant temp sensor or the harness inside the tank burning up. My 9C1 would almost die on me when I had a weak connection at the CTS, but I don't think it actually stalled. The tank wiring is known to melt at the bulkhead, just throwing that out there. | |
|
| |
GasTT
Posts : 2675 Join date : 2009-01-19 Age : 36 Location : Treasure Coast, FL
| Subject: Re: Electrical type stall Thu May 16, 2013 5:27 pm | |
| Check connections at the MAF. Swap with a known good one if connections are good. My caprice did that after the motor swap and it was because one of the MAF wires was broken and sometimes looking contact. Would die at low speed sometimes. | |
|
| |
Pooge
Posts : 1700 Join date : 2009-03-24
| Subject: Re: Electrical type stall Thu May 16, 2013 7:59 pm | |
| I think I have seen you give this as advice before, but I didn't see it listed...
I had a similar issue and it ended up being one of the coil/ICM wires slightly broken inside the jacket, the back of that connector is a weak point for the wires, mine damn near fell apart in my hand when I disconnected it.
Doug | |
|
| |
IMPALADAKID Admin
Posts : 1525 Join date : 2009-01-17 Age : 55
| Subject: Re: Electrical type stall Thu May 16, 2013 8:25 pm | |
| - Pooge wrote:
- I think I have seen you give this as advice before, but I didn't see it listed...
I had a similar issue and it ended up being one of the coil/ICM wires slightly broken inside the jacket, the back of that connector is a weak point for the wires, mine damn near fell apart in my hand when I disconnected it.
Doug I have seen this many times. I would look at those wires. With the car running in park, try wiggling those three wires to the coil harness. If it does no0t do it, it can still be bad, but chances are very good that it will cut out or stall all together from wiggling it. | |
|
| |
MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: Electrical type stall Thu May 16, 2013 8:55 pm | |
| I found my problem by pouring water on the area. The engine stopped dead in its tracks. Problem found. Broken and corroded wires. | |
|
| |
sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Re: Electrical type stall Thu May 16, 2013 9:57 pm | |
| I looked very closely at those wires Does seem like a stress point,,,wiggled & pulled....no change
Before we left the show tonight I threw the gauge on & FP primed right to 42......THEN dropped right to nothing Funny thing was, thats NOT what it did the other night I did dump some Seafoam in the tank last night Going to the garage to see how the return works to figure out how the rail holds pressure
Its either something in the return or an open injector as far as I know
Will check MAF wiring again & ICM wiring again Thanks | |
|
| |
sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Re: Electrical type stall Thu May 16, 2013 10:09 pm | |
| OK....I need help The pump brings pressure to the line thru the regulator The return line goes back to the sender & into the bottom of the tank. How does the rail maintain pressure? The return line has nothing to do with the regulator right? (cant go look at the car now....its sudden death for the Bruins Rangers...go Bruins) | |
|
| |
sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Re: Electrical type stall Fri May 17, 2013 8:39 am | |
| OK, I didnt see it correctly last night The pump brings pressure directly to the rail RETURN has the regulator inline (think thats what Crovo tried to tell me last night) Pump feed is a 1 way (unless the flex hose is compromised), return is held at pressure via the regulator I KNEW it wasnt rocket science....just couldnt wrap my head around it last night
So....if the regulator works properly when running...does that mean its good? (Also without vacuum it jumps to like 42-44 & stays there....no fuel smell or leakage)
If the regulator is good, I'll be looking for an injector or pump supply line fail He DID notice his mileage has dropped off recently (presumably since this problem started) THAT makes me think stuck injector....I'd rather R&R the rail then look for wet plugs... Afterburners are easier to work with but STILL a PIA for some plugs
| |
|
| |
toomanytoyz Club President
Posts : 6876 Join date : 2009-01-20 Age : 47 Location : East Hampstead, NH USA
| Subject: Re: Electrical type stall Fri May 17, 2013 8:53 am | |
| I think it's a valve spring. | |
|
| |
GasTT
Posts : 2675 Join date : 2009-01-19 Age : 36 Location : Treasure Coast, FL
| Subject: Re: Electrical type stall Fri May 17, 2013 9:00 am | |
| please, it's the fuel pump grounds | |
|
| |
sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Re: Electrical type stall Fri May 17, 2013 9:08 am | |
| - toomanytoyz wrote:
- I think it's a valve spring.
Should I wait until the sun hits it before I work on it? - GasTT wrote:
- please, it's the fuel pump grounds
OK you 2.....glad you could start your AM off with a giggle.... .. | |
|
| |
toomanytoyz Club President
Posts : 6876 Join date : 2009-01-20 Age : 47 Location : East Hampstead, NH USA
| Subject: Re: Electrical type stall Fri May 17, 2013 9:45 am | |
| OMG! I lol'd! Yes, must wait for sunset. Lol | |
|
| |
Sponsored content
| Subject: Re: Electrical type stall | |
| |
|
| |
| Electrical type stall | |
|