'89 Cherokee problems.

[shrimpfriedrice_18]

I have an 89 cherokee 4.0
i drove home and about twenty minutes later went outside and it wouldnt start.
ive already replaced the throttle sensor and my fuel pump is fine.
the gauge says it overheating but not too much.
my coolant is completely full.
help me?

[fredjacksonsan]

Hey shrimpfriedrice_18, Welcome to AF.

I'm thinking two things which come up on the Cherokees. The first is that with an almost 20 year old vehicle is that your radiator could be slowly corroding, and clogging up on the inside. You may be able to do a radiator flush, but usually at 20 years replacing the radiator is your best bet.

Second, not starting is one symptom of a bad Crankshaft Position Sensor. If you've had any funny shifting issues or if the engine has cut out on you on the road, that would also indicate the same.

A couple of things that would help diagnose your problem....how many miles are on it? Did the problem occur suddenly or gradually? Are there any other things that it is doing that are odd? Manual or automatic transmission?

Let us know some more info so we can help out.

[shrimpfriedrice_18]

its an automatic.
it has done this before and i replaced the throttle sensor.'
it has been fine for about three months now.
it has 206k miles on it.
im about to buy a new jeep and just need this one to last another 3 months.
thanks.

[fredjacksonsan]

200+ miles is pretty good; in the same situation I don't know if I'd put the $$ into it for parts, considering that you'll be buying in a couple months. The end of Feb is usually a great time to buy so there will probably be specials galore coming up soon, if they haven't started already.

All that said, the CPS runs about $90. You may want to take your Jeep to Advance Auto Parts or another parts store, many of them have a computer they can hook up to find out exactly what the issue is, after which you'll be better able to judge if you want to put more money into it.

[wwwildman]

I would replace the Crank sensor, located on the bell housing. It should only cost between $30-50 at either auto zone or advance auto.

[fredjacksonsan]

Originally Posted by wwwildman

I would replace the Crank sensor, located on the bell housing. It should only cost between $30-50 at either auto zone or advance auto.

Darn, then I got ripped off!

[dwendt1978]

I'd go for the CPS also. 50 or 90 it's cheaper than a car payment! I'd run that thing till you were Flintstoning it!!

[wwwildman]

[quote=fredjacksonsan]Darn, then I got ripped off! [/QUOTE

Sorry, Fred! I alway check their prices online. Besides I have replaced the CPS three times already (87, 89, & 90).

mike

[gtmud]

TRy reading it out first, before you spend the money. A Haynes manuel should give you the allowable limits.