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1999 Mazda Millenia REPLACED SUPERCHARGER, NOW IT WON'T STA

Tiny
FROMDABIGAPPLE
  • MEMBER
  • 1999 MAZDA MILLENIA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
2.3L supercharged. (Do-it-yourselfer) I replaced the supercharger and seals (proudly) due to the leak with exhaust smoke. When finished, I start the car. It runs for a few seconds with the engine loping, and then cuts off. Since then, the car won't turn over. The battery is new, with plenty of fire. With key on, all lights show, horn blows, but motor won't turn over! With the switch on, and a test light on the "start" fuse, the motor turns (but still won't start). My only doubt when replacing the supercharger was putting back the vacuum lines near the egr valve. Could some out of reach fuse or solenoid have been blown? Would misplaced vacuum lines cause this kind of problem? Any more self-help ideas? 803-238-7579 (Gabe Smith)
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Monday, January 12th, 2009 AT 11:06 AM

5 Replies

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Misplaced vacuum lines won't keep the car from turning over or starting. It might run a little rough, but it should still start. There is a fuse in whats called the "joint box" under the left side of the dash that feeds 12 volts to the start relay. The starter relay coil is switched by the starter cutout relay which is located (2.3) behind left side of dash, (2.5) on the main fuse block. The starter cutout relay coil gets 12 volts from a different fuse in the same "joint box" and is switched by a CPU also on this box. Coil ground for the starter cut relay goes through the neutral safety switch. Are you sure the car is in park or neutral?
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Monday, January 12th, 2009 AT 6:53 PM
Tiny
FROMDABIGAPPLE
  • MEMBER
  • 5 POSTS
Yes, the car is in park. Could a starter cutout relay or fuse have gone faulty after turning over and running the engine just one time since changing the supercharger? I identified two fuse boxes, one under the hood, inside driver's fender (near strut housing), and the other in lower driver dash panel. 30amp/60amp fuses visibly inspect OK. So do 15amp fuses inside engine compartment.
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Tuesday, January 13th, 2009 AT 12:52 AM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
It could be either of the 2 relays. In the socket for the starter relay, the green wire should be hot all the time. The black with white wire should be hot with key "start". In the socket for the "starter cut relay, the black with white wire should be hot with "key on" and and the light green with black, should be "ground" with key start. You need to test the fuses with a test light. Looks can be deceiving. Also, are you talking supercharger or turbocharger?
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Tuesday, January 13th, 2009 AT 2:29 PM
Tiny
FROMDABIGAPPLE
  • MEMBER
  • 5 POSTS
It is a supercharger, not turbocharger. (Thanks for suggesting a test of those relays. I will work on that this evening). But I do remember one detail that might matter. After installing the supercharger, I tested my work by briefly starting the car. I figured I'd wait to put coolant back only to see if the car would run. Still cold, it only ran for 3 seconds and shut off, and I've been unable to get the engine to turn over since. Is there be a sensor that keeps the engine from turning over when the water is low?
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Wednesday, January 14th, 2009 AT 11:17 AM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
A cut out for low water? Not to my knowledge. Low oil, yes, but not water.
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Wednesday, January 14th, 2009 AT 8:28 PM

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