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post #1 of (permalink) Old 05-03-2019 Thread Starter
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3800 stalling

Hey guys, just finished the LA1 to L36 swap in my 2000 a couple weeks ago, and nailed down a few issues, but Iím just guessing on this last one.

Once the car gets warm at idle, itíll stall. Just shuts off as if I turned the key off. Same thing happens if I mash the throttle and let it pull up through first gear. Just shuts off.

Did a little checking after it stalled at idle, no spark and no power to fuel injectors so that tells me electrical. Iíve read on here that the cam position sensor is a known issue with these engines, so I threw one at it. Also grabbed a crank position sensor for the hell of it but havenít put it on yet. Unfortunately I have not been able to drive it yet since the intake manifold gaskets went out before I got the sensor replaced (engine has 20 miles in this car lol)

What do you guys think? Am I looking in the right place?


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post #2 of (permalink) Old 05-04-2019
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You replaced the computer right?


~Joe~

04 Impala LS

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post #3 of (permalink) Old 05-04-2019 Thread Starter
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Yea that was part of the swap. LA1 to L36 swap computer from INTENSE racing. Included a tune for the headers/cat delete, and removed my speed limiter too


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post #4 of (permalink) Old 05-04-2019
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Ok do you have access to a scanner that can read data live?


~Joe~

04 Impala LS

Engine: ZZP PCM, ZZP Downpipe, Xcelerator Resonator, Dual Xcelerator Mufflers, 4" Stainless tips, 180į t-stat, Shorter Dogbones, Mount Spacers, Optima Red Top Battery
Trans/Drivetrain: TransGo shift kit + preloaded accumulator
Suspension: BC Racing coilovers, Police LCAs, Police Rotors and Pads, Boxed trailing arms, Dorman front solid sway bar
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post #5 of (permalink) Old 05-04-2019 Thread Starter
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At school we have a few gm tech 2ís, and a newer snap on scanner so...yes lol


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post #6 of (permalink) Old 05-04-2019
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I would try to get it there and get some live data on the spark and injector tables.
Not sure what else to start with besides part swapping, which is expensive unless you have a donor.


~Joe~

04 Impala LS

Engine: ZZP PCM, ZZP Downpipe, Xcelerator Resonator, Dual Xcelerator Mufflers, 4" Stainless tips, 180į t-stat, Shorter Dogbones, Mount Spacers, Optima Red Top Battery
Trans/Drivetrain: TransGo shift kit + preloaded accumulator
Suspension: BC Racing coilovers, Police LCAs, Police Rotors and Pads, Boxed trailing arms, Dorman front solid sway bar
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post #7 of (permalink) Old 05-04-2019 Thread Starter
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Well I already got the cam and crank sensors. Just wondered if you think that could fix it. I noticed the resin that was inside the case of the cam sensor was all shrunken inside, the little half moon crescent in the plastic case was empty, like you could see down in it if that makes sense


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post #8 of (permalink) Old 05-04-2019 Thread Starter
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The harness going into the ignition module looks all twisted and kinked too, so I was planning on replacing that short harness where it plugs in by the evap canister. Just runs from there down to the cam/crank sensors, and the ignition module. Was wondering if that had any correlation


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post #9 of (permalink) Old 05-04-2019
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Possibly. If you have them it doesnít hurt. Maybe continuity test some wires back to the pcm too. And make sure the connectors are seated really good in the pcm.


~Joe~

04 Impala LS

Engine: ZZP PCM, ZZP Downpipe, Xcelerator Resonator, Dual Xcelerator Mufflers, 4" Stainless tips, 180į t-stat, Shorter Dogbones, Mount Spacers, Optima Red Top Battery
Trans/Drivetrain: TransGo shift kit + preloaded accumulator
Suspension: BC Racing coilovers, Police LCAs, Police Rotors and Pads, Boxed trailing arms, Dorman front solid sway bar
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I didnít even think of testing the connection to the pcm honestly. Iíll give that a try. Iíll see how it runs with the new sensors once I get the intake plenum on. Still waiting on that in the mail


Also little tangent, I saw the details on your build on your profile page, do you like the BC coilovers? Would they be good for a daily drivers? I always had my eye on them but for 1000 bucks I thought they were kinda salty. Spotted the lowering springs/kyb performance strut combo on ZZP for 400...better deal? I know itíll have less adjustability but I only wanna drop it an inch and a half or so


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post #11 of (permalink) Old 05-04-2019
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BCís are the best. Yes $1000, but so customizable you can make your car look the way you want.
Also adjustable dampening is awesome!!
There is almost no body roll cornering a cloverleaf at 55+.
Broke the rear end loose a couple weeks ago going through some twisties, man that was fun


~Joe~

04 Impala LS

Engine: ZZP PCM, ZZP Downpipe, Xcelerator Resonator, Dual Xcelerator Mufflers, 4" Stainless tips, 180į t-stat, Shorter Dogbones, Mount Spacers, Optima Red Top Battery
Trans/Drivetrain: TransGo shift kit + preloaded accumulator
Suspension: BC Racing coilovers, Police LCAs, Police Rotors and Pads, Boxed trailing arms, Dorman front solid sway bar
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Interior:
Blue LED cluster+HVAC+door switches, LED interior
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post #12 of (permalink) Old 05-04-2019 Thread Starter
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I figured if they were that much they had to be good...how long have you had them? You know what the warranty is on them?


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Iíve had them on for 1.5 years and 42,000 miles.
I would not recommend driving them during winter if you have salt. I did that for one winter and one of the coilovers is seized up. So $150 in parts to get that one adjustable again.
The warranty is 1 year.


~Joe~

04 Impala LS

Engine: ZZP PCM, ZZP Downpipe, Xcelerator Resonator, Dual Xcelerator Mufflers, 4" Stainless tips, 180į t-stat, Shorter Dogbones, Mount Spacers, Optima Red Top Battery
Trans/Drivetrain: TransGo shift kit + preloaded accumulator
Suspension: BC Racing coilovers, Police LCAs, Police Rotors and Pads, Boxed trailing arms, Dorman front solid sway bar
Exterior: LED Headlights, Red LED license plate lights and side markers
Interior:
Blue LED cluster+HVAC+door switches, LED interior
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post #14 of (permalink) Old 05-04-2019 Thread Starter
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Yeah Iím right below you in Indiana. Luckily Iíve got my truck I used this winter. I try to keep the salt off it as best I can


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post #15 of (permalink) Old 05-09-2019 Thread Starter
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Found that short harness that goes to the cam/crank sensors and the ignition module. I actually had one I didnít know about haha, so Iíll definitely throw that on since it didnít cost me anything!


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