What is a sure way to tell that a car is an 87.5 or not?

 

I think Mazda may have began using high impedance (12-15ohm, instead of 2-4ohm) injectors halfway though the year. Ohming the injectors is probably not the easiest way to check though.

Justin

 

Built after 01/87 and before 07/87

 

Would it tell you when it was built on your pink slip? VIN check?

 

In June of 1987 VIN # 7601 begins the later half of the 87 1/2. These cars were given the high impedence injectors.

 

7601 are the last 4 digits right? mine are 7927...so i have high impedance injectors?

 

Some late June 87 are an 88 models, not an 87 or 87.5

And if you wanted to go by VIN, the last digits are above 55600 or so

 

There is a build date tag on the car in the drivers door jam. This will have VIN and I think Gross weights as well

 

7601 are the last 4 digits right? mine are 7927...so i have high impedance injectors?


anyone???

 

What year???What month???

Those (7601) just last four digits reference the end of the 87.5 model year in june/ 87 production.

 

so mine being assembled in july of '87 makes it an '88 model car? high impedence right?

 

Write down the chassis number and we'll see. It's located on the dash, left side near the window, or on a plac near the wiper motor and or on the driver door jamb.

It'll be a number like JM1FC3320H0156471 Post back with your number. And as you can see, that number is low resistance injectors. One of the good cars.

 

JM1FC332XH0527927

high or low impedance?

 

High

 

thats what i thought...thanks

 

JM1FC3322H0136187...low impedance right? :-(

 

Just check the build date on the door jam.

 

i would, but im on vacation and my car is currently 2500 miles away.

 

Ok, your excused. lol

 

looking under the air filter housing is an easy check too... if there is a resistor pack there, then you have low impedance injectors... if not, well you get the idea

if your car is so far away, why are you worried about it? did you come upon some parts?

 

Low. I don't quite understand why your asked to look at your door jamb since you posted your vin number. Did I miss something????

 

Because you can see for yourself without asking someone else if you look in the door jam.

 

whats difference in having high or low impedance ? What was the purpose in having two differn't once in the car ?

 

One needs a resistor pack, the other doesn't, thats pretty much it. As for why they did it, who knows. I guess it was to get rid of the need for the resistor pack.

 

was the resistor pack a nusense ?