Haltech Fried 2 MAP sensors?
#1
Fried 2 MAP sensors?
Recently got a E6X installed on my TII. When we went to log on the laptop, my MAP sensor is reading 13.2 psi with ignition on and motor not running. Thought it was strange then swapped it out with a friend's MAP sensor and it read 26.6 psi in the same conditions.
I tried calling SMP but no reply. So what could it be? I'm about to buy another 3 bar sensor just in case these two are bad. I'm unsure of the condition of my original MAP but I know my friend's MAP that we swapped was new.
A bad wiring install? Already checked grounds and all are good. MAP is connected directly to the intake manifold without a T. Car would barely start on my MAP but because its reading 12psi, the timing it making it rough and die after a minute or two.
Any help would be great. Car has been this way for 3 weeks with no luck.
- Kevin
I tried calling SMP but no reply. So what could it be? I'm about to buy another 3 bar sensor just in case these two are bad. I'm unsure of the condition of my original MAP but I know my friend's MAP that we swapped was new.
A bad wiring install? Already checked grounds and all are good. MAP is connected directly to the intake manifold without a T. Car would barely start on my MAP but because its reading 12psi, the timing it making it rough and die after a minute or two.
Any help would be great. Car has been this way for 3 weeks with no luck.
- Kevin
#3
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either wired up wrong, or it's not set up correctly.
does your ecu have the internal map sensor as well?
who did the install? was it running before--is this something that happened all of a sudden, or fromt he beginning.
does your ecu have the internal map sensor as well?
who did the install? was it running before--is this something that happened all of a sudden, or fromt he beginning.
#4
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Originally Posted by GUITARJUNKIE28
either wired up wrong, or it's not set up correctly.
does your ecu have the internal map sensor as well?
who did the install? was it running before--is this something that happened all of a sudden, or fromt he beginning.
does your ecu have the internal map sensor as well?
who did the install? was it running before--is this something that happened all of a sudden, or fromt he beginning.
Check the colors on the wires going to the map sensor, its orange for 5v, black for ground and yellow for the signal, the pins on the map sensor are A ground, B signal and C 5v. If they are any other colors than this, trace the wires back and find the original haltech harness wires.
Last edited by Claudio RX-7; 05-01-06 at 04:03 PM.
#7
ok, I took tonight off to take everything out.
I opened up the harness to expose all the wires and they all look good. A couple of fishy saulders that I've replaced with wire crimps and connectors.
But still the same problem. My last resort is to send in the ECU to Haltech. But we tried it on Grats car and it worked fine. I don't understand how it could be the ECU.
I guess this is my last stand. If it doesn't work, then look for the car in the for sale section or ebay.
Thanks guys. Any ideas?
I opened up the harness to expose all the wires and they all look good. A couple of fishy saulders that I've replaced with wire crimps and connectors.
But still the same problem. My last resort is to send in the ECU to Haltech. But we tried it on Grats car and it worked fine. I don't understand how it could be the ECU.
I guess this is my last stand. If it doesn't work, then look for the car in the for sale section or ebay.
Thanks guys. Any ideas?
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#10
bump up... any help?
we've went thru the whole thing with a multimeter.
I tore the whole harness back out to check everything. The 5v wire gets its 5v but the signal wire is getting 2.2v. Is that correct?
I checked the signal wire, and its not touching any other wire and goes straight from the ECU to the MAP sensor. I bought another new MAP sensor and now its reads -1.0 psi. Car starts up fine. I set the timing but the MAP sensor reading stays at -1.0 with the car running.
Also the new MAP sensor gets hot after a few minutes. I'm guessing its the 2.2v that the signal wire is getting.
Any help? We'll all stumped here.
I'm considering on sending the ECU back in to get fixed.
we've went thru the whole thing with a multimeter.
I tore the whole harness back out to check everything. The 5v wire gets its 5v but the signal wire is getting 2.2v. Is that correct?
I checked the signal wire, and its not touching any other wire and goes straight from the ECU to the MAP sensor. I bought another new MAP sensor and now its reads -1.0 psi. Car starts up fine. I set the timing but the MAP sensor reading stays at -1.0 with the car running.
Also the new MAP sensor gets hot after a few minutes. I'm guessing its the 2.2v that the signal wire is getting.
Any help? We'll all stumped here.
I'm considering on sending the ECU back in to get fixed.
#11
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The signal wire has almost 2.5v on it without the sensor plugged in. There should be nothing going on, on that wire. His 5v ref. and ground is fine. We checked continuity on wires, and did a voltage drop on the signal wire. Everything was what it was suppossed to be(excluding the 2.5v of the signal wire.)
Everything is pointing to a bad haltech.
Everything is pointing to a bad haltech.
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