I have an 89 cherokee laredo and I am wondering if it has Over drive. I am watching it shift. It only seems to shift into 4th. It seems to rev at about 3k at 65 mph. No i am also thinking that the tach may be messed up.
Thanks
Frankie

 

4th is overdive with your make and model......aisin aw-4 auto trans

 

3k at 65mph is too high in fourth(od). I read you have a 6.5 lift, what tires and gears?

 

I run 33 when playing but when normal driving for now I drive like 29 or something. I am looking for new tires now to drive on the street with. I have two sets of wheels. It does shift to 4th. I have counted. I have been wondering if I have a problem with my tach. I plan to hook up an after market one to test. Oh and stock gears

 

My girlfriend has a 96 Sport, Stock 4.0 No lift with about 29.5" tires. Tach reads about 2100-2200rpm going 65..

 

See that must be the problem. In a past post I wrote I asked about my jeep reving up to 7k. And someone said maybe bad tach. So that may be my real problem here and the trans is fine. Its the tach making me think its messed up.

 

Yeah, I would get a cheap aftermarket tach and see what it says before you do anything else... But, at least yours has a tach! My 89 has the giant gas gauge instead of the tach. At least its not the full idiot light cluster, it has all the other gauges.. I was thinking about getting something like this for mine depends on how big of one you want though: http://www.summitracing.com/parts/SUN-CP7901/

Says it works with L6 engines.

 

Well I plan to borrow one to just test and then replace mine if it is bad. I am not big on tach and things. I had one in my old isuzu pickup but that is b/c like you I did not have one. That one looks nice though. I like the smaller tachs if I must have one. Maybe I should go get a big old 6" one with a shift light. You think people would think I were fast?

 

Maybe!
The reason I mentioned buying one is because AFAIK you cant just replace the tach, it is integrated into the instrument cluster, so you would have to put a whole new cluster in. Unless youre talking about a different tach, which is not in the instrument cluster. Would look kinda goofy with 2 tachs though. But, maybe they would think youre EXTRA fast! lol

 

there's the problem.

 

why would the gears be the problem if the tires are still small? Plus the MPH on the guage and the RPM should still match up to like stock no matter the tire size. The only thing is you will actually be traveling at a diff speed.

 

33x12.50 small??
No.
the rpm is a true reading no matter the tire size.
The Mph reading is 8-10 Mph less than real speed with 33s.

 

I do not drive on the 33 I drive on like 29s or something. Plus the RPM and Speed will match up. Yes the speed actuall is different but since no gear change. When the car says 65 at 3500 rpm that will say the same thing no mater the tire size b/c the gearing is still the same. Yes you will not be traveling that speed but I am talking gauge to gauge. They will match.

I could put some low rider low profile tires and would be tech. traveling slower but the if the speed says 65 my rpm would be 3500.
And that is my question the fact that I am sitting at 3500 at 65 and about over drive.

I think I have my answer though. I do not have overdrive like meaning 5th gear and my tach is reading wrong.

 

do you have the power trans switch

 

Yes and it is off as far as I know. Could that be sticking on?