My car alarm keeps going off. The people who installed the alarm adjusted it the first time. The second time they replaced it, the third time they replaced it again, and this last time they completely unhooked it and said it HAS to be the factory installed system. (And it still goes off for no reason!) The Suzuki repair shop says my car does NOT have a car alarm already installed-just a keyless entry. What do I do?

Try to unplug door look buttons on door panel.. i had a bad door lock switch, the car thinks someone is trying to unlock it! sets off alarm,, hope this helps

First, did you check the fuel filter to see if it was clogged (cheap fix to replace it if you haven't recently)? Second, there's a fuel pressure regulator at the back of the tpi rail (back by the distributor). This has a diaphragm and spring in it. If the diaphragm leaks, the fuel pressure will be erratic. If you're going to check the diaphragm, I'd recommend installing an adjustable fuel pressure regulator where the stock (non-adjustable) fuel pressure regulator is at. The rail also has a bleed down circuit which will drop the fuel pressure once the vehicle is shut off. Third: the in-tank fuel pump could be on the way out.

check for loose wiring or a break in the wiring.

check to see if you can adjust the sensitivity of the alarm as it may be temperature that is sending it off. If it m is a genuine factory fitted unit then have a talk to the service centre for clues. Also have you considered the possibility that an animal ( cat) is jumping on the bonnet to get warm from the engine heat

might have to replace the sensors some have a resistor or diode in them if the car alarm system doesn't see the proper resistance or circuitry it goes into alarm mode

Programming
When
Remote control added or replaced. System malfunction.
How
Obtain all remote controls. A maximum of 3 remote controls can be programmed. Switch ignition ON. Repeat procedure below 3 times: Within 4 seconds: Press lock or unlock button. Within 4 seconds: Switch ignition OFF. Within 4 seconds: Switch ignition ON. Within 4 seconds: Press lock or unlock button. System should now lock or unlock vehicle. Within 4 seconds: Press lock or unlock button. Within 10 seconds: Press lock or unlock button of first remote control. System should now lock or unlock vehicle. Press lock or unlock button of second remote control. System should now lock or unlock vehicle. Press lock or unlock button of third remote control. System should now lock or unlock vehicle. Switch ignition OFF. Remove key. Check operation of all programmed remote controls.
IMMOBILIZER CAN ONLY BE SET BY DIAGNOSTIC EQUIPMENT

Depress lock or unlock button. Manually lock and unlock driver's door within 30 seconds. System should now lock or unlock vehicle. If not, carry out programming procedure.
Programming
When
Key added or replaced. System malfunction: Alarm LED in rear fog lamp switch illuminates for 30 seconds when vehicle is locked.
How
NOTE: A maximum of 4 keys can be programmed (one at a time).
As memory positions of existing keys are unlikely to be known: Obtain and reprogram all keys.
NOTE: Existing key memory positions will be overwritten.
Switch ignition ON. Use key not fitted with remote control. Manually lock vehicle using key. Using first key, press unlock button once (programs memory position 1). Alarm horn sounds once to indicate signal received. Wait 6 seconds. Press unlock button once to confirm programming. Vehicle unlocks. Programming mode deactivated. Switch ignition OFF. To program remaining keys into memory positions 2, 3 and 4. Carry out the complete procedure below for each key: Switch ignition ON. Use key not fitted with remote control. Manually lock vehicle using key. Press unlock button at 1 second intervals, as follows: Twice for memory position 2 (second key). Three times for memory position 3 (third key). Four times for memory position 4 (fourth key). Alarm horn sounds once every time unlock button is pressed, to indicate signal received. Wait 6 seconds. Press unlock button once to confirm programming. Vehicle unlocks. Programming mode deactivated. Switch ignition OFF.
NOTE: Ignition MUST be switched OFF between each key programming procedure

my beetle is fairly stubburn....for example: i tried cranking it with the alam going off and after five times the alarm cut itself off, then i started it and drove off. but that clearly is no valet over-ride because the second and third time didnt work. second time i unlocked the hatchh back and the assenger door and started the engine and it worked. third time....well...still trying.!!