96 GRAND - HOW TO GET A RPM SIGNAL FOR LPG
1996 Jeep Cherokee
JEEP GRAND CHEROKEE. 1996. 4.0L. 75K. Standard model with no modifications. As Petrol is about $8 a gallon over here decided to install a LPG system. Now I'm not expecting anyone to have any particular knowledge of my LPG system (but if anyone is interested it's a Stag300 from http://www.ac.com.pl/autogaz/en/stag300/ ) What I need to know is how to get a RPM signal for the LPG ECU. I've tried connecting to the coil and what I think is the crank case sensor but no joy. The only way I've been able to get any sort of signal that the LPG software will read is if I wrap the wire that comes from the LPG ECU around one of the HT leads (signal by induction, not a direct contact). The only problem with this is it's not steady enough and every time the signal drops, even for a millisecond, the engine flicks back to petrol. Had a conversation in a bar with someone about this and he thought I may be able to take a signal from the alternator but didn't know any more than that. Any sugestions would be much appreciated. :)
September 11, 2007.
September 11, 2007.
Check out the related content below while we wait for the question to be answered by a professional mechanic.
I have a Honda and yesterday when I went to work the rpm's dropped to zero and then ramped up normal jolting the car. This happened three times on the way to work. On the way home ...
1 answer • 1996 Honda Accord • 180,000 miles
When driving I notice the RPM speed is loud and the needle is higher than usual. And the gas usage is higher too
1 answer • 2005 Saturn L300 • 102,500 miles
Hey All, Had a very rough running Mazda 626 on LPG, engine code FP. After renewing the spark-plug cables, some vacuum hoses and cleaning the throttle valve, I installed the lot again...
5 answers • 1996 Mazda 626 • 473,000 miles
My rpm is already at 1 when i start the car and when i press the gas pedal it shoots forward suddenly. the car will move by itself when i'm not pressing the gas pedal. what is wrong ...
1 answer • 2001 Honda Civic • 135,000 miles