89-93 Mustang 5.0L PCM Rebuild Kit The 1989 – 1993 Ford Mustang 5.0L used an EEC-IV engine computer. Some of these computer codes were A9L, A9M, A9P, A9S, A9T, A3M, A3M1, C3W, C3W1, 8LF, 8LG, 8LD, D3D, D3D1, S0Z, and X3Z. Inside these computers lie three teal blue aluminum electrolytic capacitors. These capacitors had a life expectancy of approximately 15 to 20 years. The cars are now 25 to 30 years old, and are long past the life expectancy of the original capacitors. The computers are now failing all the time because of these capacitors. They eventually fail by leaking their electrolytic fluid out the bottom of the capacitor. The fluid runs down the two legs and collects on the PC board and solder joints below. The solder joints begin to corrode, often turning into either a blue or green corrosion or sometimes a brown or black goo. This weakens the leg strength of the capacitor, corrodes it’s connection to the PC board, and empties the capacitor of it’s electrolytic fluid. Sometimes the caps break completely off. No longer able to function correctly, the computer begins to exhibit driveability issues. These often manifest as poor idle quality, lean or rich air/fuel ratio, stumbling, misfiring, check engine light on, trouble codes, etc. A tune-up will not fix this. The computer must be repaired or replaced if any capacitors are leaking. With the skyrocketing cost of these Fox Body “Mass Air” computers, repairing them has quickly become the most economical option. When installed properly, these capacitors can fix many problems that were being blamed on other parts. Every Fox Body Mustang, and many other EEC-IV Fords from the same era, is likely to suffer from this problem due to their age, regardless of the mileage on the car. I HIGHLY recommend removing your computer, taking the lid off, and carefully inspecting the three capacitors with a bright light and, if necessary, a magnifying glass. Often times, even the capacitors that look good at a glance will be in the early stages of leaking if you look close enough! Look carefully at the bottom of the capacitors, the solder joints, and the board below them. I spent a great deal of time hunting down the original Japanese capacitors. The exact originals are no longer being produced, but these are the modern equivalents from the original manufacturer. They have the best ratings you can get, the highest quality, the longest life expectancy, the best temperature range, etc. They have a temperature range of -25C to 105C, a 10,000 hour life expectancy, and have the EXACT capacitance and voltage specifications as the originals. Other sellers often use cheaper capacitors with the wrong voltage or capacitance. Not us! These are the same ones we use at Drag Radial Performance when we rebuild Fox Body PCMs. They may also work on other Ford EEC-IV computers, but I have not personally confirmed what capacitors other vehicles use. In my opinion, this is not a do-it-yourself job. You can, but the wrong amount of heat or some misplaced solder can ruin the capacitor and/or your computer. A good soldering and de-soldering station is a must. For this reason, I highly recommend you have an experienced electronics, computer, or TV repair professional install these for you. I will not be responsible for damaged electronics, and there are no returns on this product for any reason, because it is electrical. Instructions will NOT be included. Note: Take pictures and notes before you begin. The installed polarity is important. Look for what direction the black stripe is facing on the original capacitors before removing them, and face these the same direction. There are three capacitors. Two are the same, one is different. Make sure you match the ratings on the new one to the old one when installing them. This kit contains the three capacitors necessary to repair one 88-93 Mustang 5.0L “mass air” computer. Order one kit for each computer you want to repair. 1 kit = 3 capacitors = 1 computer’s requirement. Free shipping on additional repair kits, so stock up! I ship quickly via USPS Priority Mail, which usually takes 1-3 days anywhere in the USA. Thanks for looking! A note about the sudden rise in competitive Ebay auctions Ever since we started selling a lot of these, there have been quite a few Johnny come lately’s selling cheap capacitor kits for a few bucks less. So I feel I am forced to address this. Here’s why you should buy these from me. 1) We started selling these kits because most of the fox computer “rebuilders” out there were using cheap capacitors in their PCM “rebuilds”. The PCMs often didn’t work when we got them back. We do a LOT of Fox computer tuning here at Drag Radial Performance, so we needed a lot of these Fox PCMs repaired. After seeing how poorly these rebuilds were working and how often they did not work at all when we got them back, we invested in the proper equipment and started rebuilding the Fox computers ourselves. These competitors are now selling those same cheap aftermarket capacitors on Ebay, for less money. 2) We tried to find the exact original capacitors that Ford used. The original Japanese manufacturer doesn’t make them any more. They have been superceded by a more modern model that is slightly smaller. This is just technology improving since 1986. We sell this newest version, made by the original Japanese manufacturer. We worked closely with the manufacturer to get the exact correct replacement capacitor. I thought this was beneficial to the Mustang community, and so I decided to offer these to the general public for sale. 3) The capacitors we sell have the highest ratings you can get. Longest life, highest temperature, best brand (and the OEM original brand), best ratings, etc. If we’re going thru the hard work of installing these, we wanted to install the best ones possible. And that is what we’re selling to you. We put together these kits so you would have the exact correct capacitors, without having to go thru the hard work and waiting for weeks to get them. These are the same capacitors we use when we rebuild these computers in-house. (Sorry, we do not yet offer that service to the public). 4) We created this kit after doing the hard research to find the perfect, correct capacitors. We brought it to the public for sale because of our love for the Fox body community. We want Fox body owners to be able to fix their beloved Fox correctly! Other sellers copied our photo, our auction wording, and started selling cheap capacitors in identical auctions to make a quick buck, because they saw that we were selling a lot of them. So please, support the people in this industry that pioneer ideas that make the Fox body better, not the copycats that look to profit off of someone else’s hard work. When you buy my kit, you are buying the best there is. 5) We ship every day, 6 days a week, and use USPS Priority Mail (an expedited shipping service), which delivers 6 days a week. Our kits are often shipped the same day you order, or the very next business day. You are more likely to get these from us faster than anywhere else. And we stock hundreds of these. Don’t settle for less just to save a couple bucks on your beloved Fox! I accept Paypal only, please. Buyer must pay for item instantly. All sales final. This product is brand new, but comes without any branded packaging. Buyer is responsible for application. I only ship via USPS Priority Mail to a confirmed physical address. USPS shipments require a mailbox for delivery. Thanks for looking!International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding or buying.