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Discussion Starter · #1 · (Edited)
Ok, this is a long story but I hope someone can help. We have a 96 RR4.0 Several months ago we started having some alarm problems with the doors locking and unlocking while driving until the vehicle locked us out completely. We found a series of key turns with the door open gave us back normal access to the vehicle. The dash display noted an alarm fault. Drove normally and locked and unlocked normally after that for several weeks. No more alarm problems now just the fault. Well then after about two weeks the car turned over but did not start. Sprayed starter fluid into air intake and car ran. Dropped the fuel tank and put 12v to the fuel pump and nothing. Replaced the pump with a new complete pump with all the fittings. Put gas in tank went to start it and cranked and no start again. Still the same. Did not put 12v to the new pump. HELPPPPPPPPPP
 

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Check the main relay. This relay is located behind the charcoal canister, on the body (it has two looms of wire running out of it). What this relay does is supplies to the ECM (engine control module) with a feed off to the injectors and air flow sensor and is controlled by the ECM. What it does is allow the ECM to remain "powered up" after the ignition is switched off, during which time, the ECM records all temperature readings and powers the stepper motor to the open position.
If this relay fails, the ECM will not be switched on, resulting in the engine not starting because it won't get any fuel or ignition.
Hope this help. Let's know how you make out.

Regards
Roland.
 

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Discussion Starter · #3 ·
Dear All Parts Falling Off,
We have checked the relays as best we could and we do have ignition. At least it cranks. We have also checked and reset the inertia switch. Any other ideas?
Thanks
 
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