Microsquirt issues, no fuel/spark
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Microsquirt issues, no fuel/spark I'm having a problem getting my car started with a microsquirt set up and need some help.
The harness was built by aknovaman, very nice job, I have everything hooked up right, plus he made it very easy by labeling it all. Went through the steps microsquirt has on their site to start the car, got it talking to my laptop easily, sensors were registering with tunerstudio, he loaded a base tune in for me to get it started, went to start it and had no spark and the tach on tunerstudio and in car weren't getting signal (tach in car is hooked to pin 35 the green/yellow wire).
Today I figured I'd reflash it and download denmah's tune he has on the how to microsquirt thread since it'd pretty much same set up as me except cam. Did like denmah's video shows and did the uploader deal then put his tune in, all went easy, still no spark. This time I pulled a plug to put it in the boot to see for sure if it had spark and when I checked the plug it's still clean, zero fuel on it, so I'm not getting any fuel either. Plus still no tach signal.
Anyone have suggestions on what to do now?
The harness was built by aknovaman, very nice job, I have everything hooked up right, plus he made it very easy by labeling it all. Went through the steps microsquirt has on their site to start the car, got it talking to my laptop easily, sensors were registering with tunerstudio, he loaded a base tune in for me to get it started, went to start it and had no spark and the tach on tunerstudio and in car weren't getting signal (tach in car is hooked to pin 35 the green/yellow wire).
Today I figured I'd reflash it and download denmah's tune he has on the how to microsquirt thread since it'd pretty much same set up as me except cam. Did like denmah's video shows and did the uploader deal then put his tune in, all went easy, still no spark. This time I pulled a plug to put it in the boot to see for sure if it had spark and when I checked the plug it's still clean, zero fuel on it, so I'm not getting any fuel either. Plus still no tach signal.
Anyone have suggestions on what to do now?
did you calibrate the throttle body?
first spray some starter fluid down the throttle body, crank on it and see what happens.
second make sure you have your coil ground on its ground away from all other grounds.
what year model is your engine?
are you getting SYNC when your cranking?
first spray some starter fluid down the throttle body, crank on it and see what happens.
second make sure you have your coil ground on its ground away from all other grounds.
what year model is your engine?
are you getting SYNC when your cranking?
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I didn't calibrate the throttle body but checked it and it read 100% at full throttle so thought it was right.
It's a 2003 5.3, when I crank the tachs stay at zero and the little boxes on the bottom of the gauge cluster on tuner studio has a red box that says not rpm synced.
It's a 2003 5.3, when I crank the tachs stay at zero and the little boxes on the bottom of the gauge cluster on tuner studio has a red box that says not rpm synced.
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Ok. All plugs are definitely plugged in well, I checked like 5 times now and checked the few connections I had to make.
The grounds for the coils has me confused, I saw where Matt said to run the browns to the heads on some of the older set ups, on this harness the browns were all cut at the coils, each coil has the pink and black and their color coded wire. The whole harness has one main ground right near the controller.
The grounds for the coils has me confused, I saw where Matt said to run the browns to the heads on some of the older set ups, on this harness the browns were all cut at the coils, each coil has the pink and black and their color coded wire. The whole harness has one main ground right near the controller.
you will have to get with aknovaman on the wiring/grounds.
unplug your crank position sensor and check to see if you have power there with the key on..
what injectors are you running?
unplug your crank position sensor and check to see if you have power there with the key on..
what injectors are you running?
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seeing rpm at all while cranking?
120-140 rpm, if not it wont spark
if you are not seeing rpm while cranking in the software, thats where you need to look first
at the crank trigger wiring and sensor possibly being bad
if you see cranking rpm, and then you dont see spark, then its coils, wiring etc issue
but get it seeing rpm so it will fire the coils and go from there
120-140 rpm, if not it wont spark
if you are not seeing rpm while cranking in the software, thats where you need to look first
at the crank trigger wiring and sensor possibly being bad
if you see cranking rpm, and then you dont see spark, then its coils, wiring etc issue
but get it seeing rpm so it will fire the coils and go from there
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I calibrated the TPS. Checked and have 12 volts to the crank sensor, so I got a new crank sensor and put it in. Still no rpm while cranking, tach does not move at all.
It still says "not rpm snyced" down at the bottom of the gauge display on TS too...
Any thing else to look for? I'm totally lost at this point.
It still says "not rpm snyced" down at the bottom of the gauge display on TS too...
Any thing else to look for? I'm totally lost at this point.
I whould double check the location of the wires on that crank sensor. on denmahs how to micro page there is a pic make sure you are wired correct . even if you have to open the covering on the harness to read where they are located. make sure the terminals are in the plug and not pushed back in the plug. as well as make sure the three wires are hooked to each terminal with a slight pull individually. your issue is there I bet.
you should be able to check the 12v supply and the ground with a test light to see if they are in the right spot
you should be able to check the 12v supply and the ground with a test light to see if they are in the right spot
Last edited by yenkomike; Oct 24, 2014 at 06:48 PM.
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Well heres the idiot move...
I had the crank sensor plugged into the cam sensor... omg I feel stupid.
Fired right up then, my afr is off on the computer from what my wideband says, other than that life is grand. Thanks for the help guys, I finally put 2 and 2 together when Mike said the top and bottom pins.
I had the crank sensor plugged into the cam sensor... omg I feel stupid.
Fired right up then, my afr is off on the computer from what my wideband says, other than that life is grand. Thanks for the help guys, I finally put 2 and 2 together when Mike said the top and bottom pins.