OEM Crank sensor part number? ‘86 2.5L

[Vineyard86manch]

Hi All, 

 

I’m looking for a Brand/part number for a Crank Sensor that you guys would recommend. For an ‘86 2.5L 

 

Thanks!

[cruiser54]

It's a crap shoot anymore with all the chicom junk out there. 

 

Is yours bad? Have you tested it? Modified it? 

 

CRUISER'S MOSTLY RENIX TIPS

RENIX CPS TESTING AND ADJUSTING

OCTOBER 30, 2015 SALAD 131 COMMENTS EDIT

Renix CPSs have to put out a strong enough signal to the ECU so that it will provide spark.

Most tests for the CPS suggest checking it for an ohms value. This is unreliable and can cause some wasted time and aggravation in your diagnosis of a no-start issue as the CPS will test good when in fact it is bad.

The problem with the ohms test is you can have the correct amount of resistance through the CPS but it isn’t generating enough voltage to trigger the ECU to provide spark.

Unplug the harness connector from the CPS. Using your voltmeter set on AC volts and probing both wires in the connector going to the CPS itself as shown in Figure 2 as Connector A, crank the engine over. It won’t start with the CPS disconnected.

You should get a reading of .5 AC volts.

If you are down in the .35 AC volts range or lower on your meter reading, you can have intermittent crank/no-start conditions from your Renix Jeep. Some NEW CPSs (from the big box parts stores) have registered only .2 AC volts while reading the proper resistance!! That’s a definite no-start condition. Best to buy your CPS from NAPA or the dealer.

Sometimes on a manual transmission equipped Renix Jeep there is an accumulation of debris on the tip of the CPS. It’s worn off clutch material and since the CPS is a magnet, the metal sticks to the tip of the CPS causing a reduced voltage signal. You MAY get by with cleaning the tip of the CPS off.

A little trick for increasing the output of your CPS is to drill out the upper mounting hole to 3/8″ from the stock 5/16″, or slot it so the CPS bracket rests on the bell housing when pushed down. Then, when mounting it, hold the CPS down as close to the flywheel as you can while tightening the bolts.

Another little tip to save tons of aggravation is to stick a bit of electrical tape to your 11mm socket and then shove the bolt in after it. This reduces the chances of dropping that special bolt into the bell housing. 

[Vineyard86manch]

Thanks @cruiser54 for the advice. Admittedly this is a parts cannon move, I’m a bit of a novice with engines. A couple mornings ago I drove my mj to town, parked it for 30 minutes and when I got back it would turn over but not start. Thought it was starter, tapped away at it still no start. A friend suggested plugs, and sure enough I changed just the plugs out and she fired right up. When I explained the situation to my mechanic, he’s worked on all my vehicles and he’s been honest and reliable, he said it sounded like my crank sensor was bad. Not really sure but I tend to take his word for it and he knows the truck pretty well. I’ll do the test and see what happens, I’ve never modified or done anything with what may be the original cps. Thanks again for your help!

[cruiser54]

Yes. Check out your CPS. No parts cannon.

 

Have you completed Tips 1 through 5 at my website yet?

If not, do those right away. Easy even for a novice. Actually enlightening!!. 

[eaglescout526]

T0739789

 

There is still some left I can order.

[Vineyard86manch]

7 hours ago, cruiser54 said:

Yes. Check out your CPS. No parts cannon.

 

Have you completed Tips 1 through 5 at my website yet?

If not, do those right away. Easy even for a novice. Actually enlightening!!. 

I’ll hop right on it, thanks again for your help!

[Vineyard86manch]

9 hours ago, eaglescout526 said:

T0739789

 

There is still some left I can order.

I’ll keep you in the loop if I need one thanks!

[eaglescout526]

49 minutes ago, Vineyard86manch said:

I’ll keep you in the loop if I need one thanks!

No problem!