1997 Mazda Protege Engine Temp. Gauge

Tiny
JAFO104
  • MEMBER
  • 1997 MAZDA PROTEGE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 11,500 MILES
I have a 97 mazda protege. I just completed an engine change out. I bought an Imported JDM engine and installed it. I took all of the accesssories fromn the old engine and put them on the new one. I.E. Intake, power steering, A/C, Alt. Starter etc. I also put the thermostat from the old car into the new car since the thermostat was only 2 month old. I did not change the water pump out. The car runs great, idles perfect and timing is dead on. The only problem is when it's sitting still the temp. Comes up to normal operating temp. Gauge arm about mid-point. When you start driving the gage slowly drops back down to "C" (cold), it doesn't seem like the car is blowing hot air with the heat on, just warm. The upper and lower radiator hoses seem hot but not too hot that you can't put your hand on them.

Should I put another thermostat in? Since the inside of the car does not seem to blow real hot air at full temp.

What about the temperature guage sending unit? I used the one from my old engine, because it was the correct one for my wiring.

any suggestions?
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Monday, January 14th, 2008 AT 9:31 PM

31 Replies

Tiny
MERLIN2021
  • EXPERT
A new sender won't increase the water temp, a new thermostat might.
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Tuesday, January 15th, 2008 AT 8:02 AM
Tiny
JAFO104
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So. Should I change the thermostat again.

Would that cause the temp to fall only while driving?
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Tuesday, January 15th, 2008 AT 9:19 AM
Tiny
MERLIN2021
  • EXPERT
Thermostat! Check the temp range on the present one, should be marked on it.
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Tuesday, January 15th, 2008 AT 10:08 AM
Tiny
JAFO104
  • MEMBER
Thermostat fixed the eratic temperature proble. The thermostat was stuck open, it was a fail safe thermostat, so I went back with an OEM.

No I have a check engine light on, I'll get back with more details. Thanks for the help.
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Wednesday, January 16th, 2008 AT 7:28 AM
Tiny
JAFO104
  • MEMBER
Now I have a CEL on. Code P0304. There is a list of things it could be but it has new plugs.

The light also blinks some times. The timing is dead on and the car runs great. I'm at a losss and not sure where to go. HELP.
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Wednesday, January 16th, 2008 AT 4:03 PM
Tiny
MERLIN2021
  • EXPERT
P0304=Missfire on cylinder 4. Pull the plug, check the wire. And distrib cap.
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Sunday, January 20th, 2008 AT 8:29 AM
Tiny
JAFO104
  • MEMBER
Pulled the plug, it was carboned up pretty well. Cleaned it, put it back in, replaced the plug wires and cleared the light. Stayed off for about a week, now it's back on. Code P0300 random misfire. Not sure where to go next. Remeber this is one of the JDM engines. I did see some sludge build up when I put a new distributor o-ring in a few weeks ago, I wonder if thats giving me some problems? I've changed the oil twice in the last month and each time the oil gets cleaner. I'm running some fuel injector cleaner through as we speak.
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Tuesday, January 22nd, 2008 AT 7:50 AM
Tiny
MERLIN2021
  • EXPERT
300 is a random missfire, check your wires and make sure they don't route near injector, or any ignition wires. If thats not it check the crank sensor. When you put the new o ring in did you move your cam sensor?
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Tuesday, January 22nd, 2008 AT 8:10 AM
Tiny
JAFO104
  • MEMBER
I bought borg warner plug wires, but they are not exact fit like to old ones. Crank sensor was replaced. No change with the distributor.
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Tuesday, January 22nd, 2008 AT 12:14 PM
Tiny
MERLIN2021
  • EXPERT
Jeff is this a 1.8 or 1.5?
Check these out for randoms no matter which, but for specific testing info I
need the engine size!
Ignition system including module
low fuel level or pressure
low battery voltage
poor compression
incorrect air gap on CKP
EGR system trouble
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Wednesday, January 23rd, 2008 AT 8:19 AM
Tiny
JAFO104
  • MEMBER
It's a 1.5 DOHC. Engine was bought from a engine supply place in Florida. I pulled the plugs again and noticed a build up of carbon. I cleaned the plugs, cleared the code and the car has been fine for two days. This seems to return about once a week. I have Bosch Platnum plugs in the car and borg warner wires. Why does the carbon keep returning? Is it from the engine sitting for some time? Is there a way to clean out the motor? I'm afaraid there is some residual sludge in the engine. I've changed the oil twice in the last two months with some noticable cahnge in the oil color and consistency. Very confused on where to go next.

On a side note the engine idles perfect, about 750 and the timing is dead on.
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Thursday, January 24th, 2008 AT 7:43 AM
Tiny
MERLIN2021
  • EXPERT
Get some seafoam and follow directions to clean combustion chambers. Be carful. If you go too fast, engine damage can occur, then switch to synthetic oil as it won't slugde up.
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Thursday, January 24th, 2008 AT 9:29 PM
Tiny
JAFO104
  • MEMBER
So you think the carbon and residual sludge is giving me the problem. By the wat CEL came back on after being off for two days. Random misfire again.
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Friday, January 25th, 2008 AT 6:46 AM
Tiny
MERLIN2021
  • EXPERT
I tink you need to check the compression on this motor.
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Friday, January 25th, 2008 AT 2:02 PM
Tiny
JAFO104
  • MEMBER
Compression is 198 to 200 in all 4 cylinders. Still getting the check engine light, still comes up misfire #4 or random misfire. When I put the new engine in I did not change the intake manifold gasket, i'll try that this weekend. Could be the plugs, even though they are only 6 month old.

I'm lost, not sure where to go with this thing.
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Wednesday, January 30th, 2008 AT 7:50 AM
Tiny
MERLIN2021
  • EXPERT
If it's bridging the gap try a hotter plug. Loose the platinums for OEM and see how that goes.
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Wednesday, January 30th, 2008 AT 7:59 AM
Tiny
JAFO104
  • MEMBER
Put in the OEM NGK's and after 24 hours light cam back on still misfire #4. But the car runs perfect.
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Saturday, February 2nd, 2008 AT 7:58 AM
Tiny
MERLIN2021
  • EXPERT
I think it might be time for a new coil, spark is not hot enough.
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Saturday, February 2nd, 2008 AT 8:08 AM
Tiny
JAFO104
  • MEMBER
Here is a dumb question. This car has a distributor. Does it still have a coil?
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Sunday, February 3rd, 2008 AT 9:07 AM
Tiny
MERLIN2021
  • EXPERT
Yes it still has a coil...Follow the high tension lead in the middle of the cap...takes you right to it...Use either a spark tester or modify an old plug and widen the gap to between 1/4 to 3/8th and test all wire, if you get a strong spark at all wires, Look elsewhere for the trouble, test coil this way too...


http://www.2carpros.com/forum/automotive_pictures/62217_Plugs1_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_Plugs2_1.jpg



http://www.2carpros.com/forum/automotive_pictures/62217_Plugs3_1.jpg

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Sunday, February 3rd, 2008 AT 10:04 AM

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