The Merkur Club of America Forums

preston240sx,

If you have tried all the test procedures I suggested then I would suggest that you pull the blower motor out. If you don't have a paper shop manual then go to http://www.mc2racing.com/ and order the CD version.

John

preston240sx,

If you have the pigtail from your fan disconnected, you want to put 12V to one side and a ground to the other side.

John

preston240sx,

After you clean all the connections, turn your ignition on, turn your fan on high. If the fan runs reasonably well then the resister is bad and you need to replace it.

John

preston240sx,

Did/does your existing blower work when you turn it on high? Have you checked the fuse that is on top of the false fire wall?

John

XR4,

MerkXRTurbo gives you good advise.
If I were to do it I think I'd opt for the 2.5 rebuild!! I'd also go with the second step bigger with the intake and exhaust valves, I think they are 2.02, not sure.

fastswede, Go to the ARP web site and get the recommended stud stock number if listed, if not e-mail them. I used ARP studs and had no problem with the head fitting. It's just a PITA holding the head and sliding it down on the studs. I used a 110 LBS as the final torque. I believe ARP recommends 90 ...

After you get the center section out you can use a die grinder with an aluminum burr to flush it up. Yep you can get them with a 6" mandrel to.

John

st_rage,

Did you have the drums machined to get rid of the rust ring on the outer edge of the drum?

John

So, i bought an xr4ti, needs some work. id rate my mechanical abilities as moderate at best so youll have to bare with me if some of my questions seem a little mondain. We shall bare, I don't believe I said that. First, i have an ever growing crack in the exhaust manifold, and a few weeks ago my tu...

preston240sx,

On top of the false fire wall is a panel. Remove that panel. Inside you will see a plug. Pull the plug, take the two screws out and replace the resistor pack. That should clear up your fan problems.

John

mike63,

Being that you have your cam time set, go back and reset your base idle. Disconnect the IAC when you set it. After that reset your TPS. I think you will find that you will be good to go after you do that!!

John

st_rage,

I'd run a scanner on it as soon as I got it to a point that I could! That should give you some information that will help you trouble shoot.

John

It is kind of mysterious, with all the modifications that have surfaced over the years for the XR that someone hasn't come up with a good timing belt tensioner!

DG where are you?

John

MerlinMerkur wrote:Heh, I keep hearing you guys say you think the timing belt may have jumped/skipped a tooth. I cant see how this is humanly possible lol...

It's quite easy the XR belt has a fixed tension, in lieu of a constant spring tension! If you don't check it periodically, it will stretch and slip!

John

Tumbler,

The biggest thing is to remove it, take it apart and make sure there are no metal shavings in it from your distributor gear/auxiliary shaft. Change your oil also.

John