Lights Flicker, radio and AC shut off and gauges go crazy

RRT08101968

MEMBER
2002 FORD FOCUS
4 CYL
FWD
AUTOMATIC
126,000 MILES

While driving all of a sudden my car downshifts into neutral or jerks really hard, lights flicker, AC and radio shut off, and all the gauges go haywire. This goes on sometimes just a few seconds and then it goes back to normal. Periodically my check engine light will come on or flicker. I have a OBD handheld scanner and was able to get these codes to show P0705 and P1237. I have put it in the shop approximately 10 times now and the mechanic cannot seem to find the problem. I changed the PRNDL sensor and it stopped it for about 2 weeks. The same issue came up again. I had the alternator checked and the voltage regulator was bad so I had it rebuilt still has not stopped the issue. Can you help? I'm stumped and tired of dishing out money for something that can't be resolved. I'm thinking my car is possessed.

3 Replies

RRT08101968

MEMBER
3 POSTS

I should also mention that when the check engine light is flickering, there is a clicking sound from under the hood, on the drivers side. It sounds as if it is coming from inside the dash.

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Tuesday, January 7th, 2014 AT 2:14 PM

HMAC300

MECHANIC
48,601 POSTS

P1237 is a fuel pump module so it may be bad or the ground is loose on it or the battery ground to body is loose. Check battery for condition including load test and make sure batter terminals are clean including battery to body 705 is an out put shaft speed sensor so it could be a broken wire or one shorting out or a sensor. It's on the outside right hand side of trans. Check undrhood fuse box it may be a relay that is clicking and shold be marked in manual or under fuse box cover which could lead to the problem area but try the stuff I've said first. Also if you disconnect battery you will have to reset antitheft system or it won't start.