1999 Mazda Protege

Tiny
LESTRADAMUS
  • MEMBER
  • 1999 MAZDA PROTEGE
  • 4 CYL
  • AUTOMATIC
  • 160 MILES
I just purchased a 1999 Mazda Protege, 160K miles for my daughter. I didn't notice on test drive but now notice a "clunk" when car shifts into overdrive. Looking for recommendations/ideas on how to procede. Hoping I haven't bought a big problem. Les
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Monday, May 23rd, 2011 AT 6:36 PM

14 Replies

Tiny
MERLIN2021
  • EXPERT
I do recall Mazda having problems with trannys. I will look up any tsb's or recalls on it when I get to my computer.
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Tuesday, May 24th, 2011 AT 10:14 AM
Tiny
MERLIN2021
  • EXPERT
Is the OD light and check engine light on? If not, check engine/ transaxle mounts, if yes, there is a bulletin about moisture in the tranmission range switch, unplug it and check for moisture or corrosion. If found have a Mazda dealer replace the switch, if it's not installed right, internal damage to the transmission will occur.
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Wednesday, May 25th, 2011 AT 8:21 AM
Tiny
LESTRADAMUS
  • MEMBER
The check engine light is on and I took it to Auto Zone but the code was for a O2 sensor. I will have someone check engine/transaxle mounts. I will also check for moisture/corrosion in transmission range switch. I have my fingers crossed that this isn't a major issue. Thanks. Les
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Thursday, May 26th, 2011 AT 2:01 AM
Tiny
MERLIN2021
  • EXPERT
Let us know
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Friday, May 27th, 2011 AT 8:51 AM
Tiny
LESTRADAMUS
  • MEMBER
Finally back in town and first thing I did was to replace burnt out/missing warning bulbs in instument cluster(seller had apparently removed, hmmm) and I have a flashing O/D light. Check engine light no longer on after replacing air filter and cleaning map sensor. I had my 1999 mazda protege scanned for codes and it revealed P0750 (Pressure Control Solenoid Malfunction). From reading various Mazda forums with people with similar probems this seems to indicate a bad EPC solenoid. What do you think? I think this is a project that I may be able to tackle if so. Any advice is greatly appreciated. Les
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Wednesday, August 24th, 2011 AT 3:04 AM
Tiny
RIVERMIKERAT
  • MEMBER
If it is the EC-AT Solenoid, it is located on the valve body. Drop the transmission oil pan, after draining and there it is.

Motor and transaxle mounts can be checked by firmly setting the parking brake, putting the car in gear, and watching the engine/transaxle for excessive motion as the RPMs are raised to about 2000. Stand at the side of the car while watching. Block the wheels for added safety.

I don't see a P0750 for this make and model. I see a P0751 which is shift solenoid "A" malfunction-stuck off. P0752 is the same, except 'Stuck On'.
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Thursday, September 29th, 2011 AT 11:20 PM
Tiny
LESTRADAMUS
  • MEMBER
Thanks. Is was the solenoid. Dropped the pan, replaced the solenoid and it is shifting like it was new! Thanks for yr reply!
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Thursday, September 29th, 2011 AT 11:45 PM
Tiny
RIVERMIKERAT
  • MEMBER
Our pleasure.
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Friday, September 30th, 2011 AT 12:04 AM
Tiny
POCH_OMURG
  • MEMBER
I have almost similar problem with my 1998 mazda protege lx 1.8 engine on flashing od off light. Mine will usually occur when it during highspeed or during uphill driving but the flashing will turn off as soon as I stop and shift it back to park position. I already replace the throttle position sensor on this car but still the flashing occur once in a while. Is the epc solenoid same as the so called ec-at solenoid? How many solenoid do I need to replace?
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Thursday, February 2nd, 2012 AT 3:52 AM
Tiny
RIVERMIKERAT
  • MEMBER
I would start with the EC-AT solenoid poch
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Thursday, February 2nd, 2012 AT 4:11 AM
Tiny
POCH_OMURG
  • MEMBER
Is the ec-at solenoid still located under the valve body or I need to remove the valve body to pull it out? I already change the at filter on this and fix the wire inside. I was hoping that it was just a problem on my tps but still it happened this afternoon after I replace the tps I was driving up the access ramp and when im going down the road the flashing light turns on. And it feel like it doesnt go to overdrive gear.
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Thursday, February 2nd, 2012 AT 4:34 AM
Tiny
RIVERMIKERAT
  • MEMBER
You should see it after draining and dropping the pan.
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Thursday, February 2nd, 2012 AT 5:08 AM
Tiny
POCH_OMURG
  • MEMBER
My mazda protege is 1998 mode this is an LX 1.8l. According to a mazda dealership here in edmonton, this type of model was release only here in canada. This is the VIN number of my car: JM1BC1422W0186375. Can someone help me the right part # of the shift solenoid A and also the epc solenoid? Do I still need to pull down the valve body to remove it? Or it can be easily puled out. I need to order this solenoid as soon as possible that is why I really need the right part number of it.
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Friday, February 3rd, 2012 AT 2:22 AM
Tiny
RIVERMIKERAT
  • MEMBER
You can get the right part # from the dealership much quicker than we can, and you wouldn't be charged international phone rates, either.
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Friday, February 3rd, 2012 AT 3:02 AM

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