I have a P71 police interceptor with 3.27 gears w/trac lock a 4.6 flex fuel engine, and the 4r75e transmission with external cooler. Car has 126,000 miles and 3900 engine idle hours. I have all of the maintenance records from the PD and the car was serviced every 2,000 with a transmission. Rebuild at 56,000 and retired to the motorpool. The owner who bought it from the mtpl at 76,000 had regular maintenance recorded in manual so the car was well maintained as far as service went and was used as a vehicle speed trap "ghost car" and drove like new when I bought it a month ago. There is its history now for my problem. The car makes a 1-2 whine or whir that increases in pitch with rpm and from what I hear stop once in second. It did this since I bought it and I was convinced it was the normal CVPI drive-train noise since the vehicle shifted fine with no problems. It still shifts fine in all gears when driving normal and even at 3/4 throttle. It does however like to hunt for in and out overdrive with overdrive on which I heard is normal for these trans. The problem that got me worried is that second tothird up-shift (WOT only) feels and sounds like it does not want to shift into third just revs higher until I get scared of blowing engine and let off the gas a bit then it shifts to third. Fluid it bright red and exactly at the max fluid level line when at op. Temp. No codes stored, pending or anything but I do not have an ABS reader and I did have a ABS light pop on once after I was working on car and bumped the ABS wheel speed sensor wire clip and must of ripped the wires out of the clip but was able to put them right back in and light went off but maybe there is a pending code that I cannot check with my scanner. I read on this site a ABS sensor can mess with transmission shifting. It is not a slip it feels like it never even tries and just revs up almost red-lines or maybe it tries to shift but its so weak I cannot feel it. I am going to drop the transmission pan and check the filter ASAP in case the filter/screen is clogged. I am hoping all that I needed is a new filter that could cause low pressure/fluid which could cause the whir/whine, and the wot second to third no shift. Right or am I dreaming? I am on a low budget and cant afford costly repairs that do not need repairing but I really cant afford a drive-train failure. I am very mechanically inclined and enjoy learning about and doing repairs myself instead of paying someone who may half a** a repair I paid good money for. I do all my repairs myself unless I need a lift or specialty equipment so I would really appreciate a detailed response to what you guys think it is and would bet your money on. The previous owner does have a record of changing transmission fluid, filyer, wire harness@101,000 miles. I am not sure if the popular j-mod I keep reading about in forums was ever performed by the previous owner or PD, but that should help transmission shifts not hurt them. By the way I have been reading the repair information and diagnostic help this sites experts give almost all day today and I am very impressed with the level of knowledge, intelligence, and detail they have to offer. It is unreal! I am so happy I found this site I called my brother and told him about it, haha. You guys are very informative and sound like you actually care about the people asking questions and go above and beyond with detail and information regarding their specific and general repairs questions. Thank you completely and sincerely in advance for any help given. You guys rock!
have the same problem?
Thursday, April 13th, 2017 AT 11:05 PM