88 vert

i have a 89 vert all stock with no mods it idles fine but when i hit the gas it wants to stumble and cut off if u hold the gas but if u let up it returns back to idle fine i replaced the tps with a brand new one and the plugs and plug wires and adjusted the tps 2or3 times until i got just one light lit up on the tester everytime it stumbles it will smoke when u get back on the gas it is an intermittent prob seems to do it more when its cold outside please help its not my car but my sisters and she just bought it thanks,Dave

MisterMatt

it could be clogged up a little. Either the cats are clogged, or you should run some fuel injector cleaner through it. If when it happens that light comes on and it cuts out, it could be the oil metering pump, but I don't think that should make it smoke. Mine didn't smoke when my omp went out, but it could be that.

<>< Matt ><>

88 vert

yeah thanks the cats are hollowed out i believe it sounds like it what light are u talking about i adjusted the tps with the test light from mazda to adjust the tps but it hasnt affected the problem any i wish it would do it all the time instead of once inawhile than it would be a lot easier to find im going back out to keep digging and testing keep the ideas flowing please thanks,Dave

88 vert

well its dark and still have no luck i drove it about 20 miles and never had a problem but wants she its in it to drive it it acts up again im going to check the omp tommorow in the daylight but until then i guess i will tell her not to drive it.Hmmmm maybe she would consider a trade for my 88.

thomasmeisch

Its your oil metering pump same thing happend to mine $$$$$$$$$$$$$

88 vert

kewl thanks alot its raining outside now so ill probably go ahead and order it and replace it thanks for yalls help now maybe the rex can get some respect once i fix it.Dave

4BDNFRUIT

Well I found out what my bro does in his spare time....
still trying to fix my car
thanks bro for your help and everyone else
TY
LISA

88 vert

holy s&*% now i know why thomas put $$$$$$$$$$$$$$$ found a couple of used ones going to order thoose and hopefully it will be on hte road again well thanks forall yalls help

NJDave

Interesting - I think I had the same problem, but not recently. Can someone tell me why the OMP would cause this to happen?

I have had the situation where the car will start just fine after sitting outside all night on a cold morning. It will drive just fine until it starts warming up. Then, when the temp needle starts moving up, the car will act like he mentioned above: you step on the gas and the car stumbles like it is getting no fuel. It will then stall. To start it requires pressing the gas pedal to the floor and, after a few minutes of trying, it will start very roughly and make tons of smoke. Last winter, this happened every time I left the car out of the garage when it was cold out. It didn't happen at all when the car is in the garage or if it is warm out (e.g., above about 40 degrees). It hasn't happened at all this year, making me believe that whatever the problem is, it has corrected itself.

Also, of interest, this was on an 89 convertible with about 15,000 miles on it.

Any ideas?

Dave

MisterMatt

I really don't know why the omp would make it smoke like that and require you to floor it...when mine went out, it was an intermittent problem. Anyway, yeah, the OMP's are WAY expensive. I can't really think of what it could be though...it still may be your omp if it's shot really badly. Well, I hope the best for ya! Just let me know if you have any more questions...I may not be able to tell you much, but at least I can sympathize!

<>< <>< matt ><> ><>

88 vert

hey i havent been able to test i for sure to find out this is the problem they are common to go out on the 89 though.Wht causesit to smoke is imay be wrong but this i what i figure by reading the 89 mazda manual and a little bit of research on it the omp mixes the gas and oil well it also has a position sensor on it that allows it to dump oil into the motor when its first started so it has compression thats why you have to floor it when the omp is going bad when wot it resets the omp an dumps more oil to get the compression needed to start mine is a manual pump and i have to floor it everytime to start but its a manual pump if i dont floor it it will then flood and i know my injectors arent leaking because there brand new i think on mine the problem is the 89 intake on a 88 which has a metering rod instead of electric so the rod is know all bent up to fit on the 89 intake and why it smokes is that the omp is going in and out sometimes dumping oil and someties to much which then inturn causes it to smoke now dont quote me on this for this is justmy little mechanical brain trying to figure this thing out. this is a very expensive part $1502.87 so im trying to figure this thing out so i am 100% sure this is the problem thanks for everyones help,Dave

Mobius

$1502?

Better be gold plated and give you superhuman powers

88 vert

yeah tell me about i asked if they had a rebuild kit and they laughed at me i thought the tps was bad at $423.00 when they called after i ordered them they said hello david this is quality lincon mercury mazda your gold plated mazda parts are in i couldnt imagine what the omp is plated i just thought that was ridiculous 1502 for a omp.

4BDNFRUIT

anyone got a few extra bucks they wanna throw this way??
cuz it looks like im gonna need it for this part?!
never imagined i would be spending this type of money for this car!!
but hopefully ill be able to drive it soon

Mobius

Lets see. OMP. That's ALLLLLLLLL you need???

No prob. That'll be...hmmmm. Not sure. But don't order it till I find one for cheap.

Oil metering pump.

Years Model Part Number
74-85 All except GSLSE 14-6000-N249
84-88 13B Six Port/non-turbo 14-6000-N246
86-88 13B Turbo 14-6000-N318
89-92 13B All (Electric Pump) 14-600B-N350

Ah, lets see......

Holy crap!

Well at least its not a ******* 1502!

14-600B-N350.....PUMP METERING.........89-92 ALL.............$1102.72

www.Mazdatrix.Com

It'll save "some"

Do you guys have a Pull and Save car yard? You might get this oil metering ****-monster for 1/20th the cost. Lemmie know how it turns out. We have one in colorado.

88 vert

yeah we have junk yards here but no 8-91 ive found a coupe on partstrader but waiting on reply from them ive already seen the one on mazdatrix but still way overpriced for a damn pump oh well thanks again

Mobius

Try these guys too. They seem to be pretty cheap. I couldnt find the part but they did say if you can't find it they probably do have it.

www.RevolutionRotary.com
Rotary Engine Specialists
info@RevolutionRotary.com
866-825-8056

But please don't spend that much from Quality Ripoff lincoln logs, Asscury and Mightymunch.

thomasmeisch

try mazdarecycling.com, got mine for $750