I have a 1987 Ford Ranger 2.9 L V6. It has 253,000 miles on it. Here's the problem:
Sometimes when I step on the accelerator pedal my car doesn't accelerate. We have replaced about 95% of the parts on this vehicle. We first thought it was a faulty sensor and we soon found out that the computer will only tell us that the sensor is plugged in...not if its working properly. Here's what I have replaced:
Fuel pump (exterior, I have one in the tank that was replaced at 175,000 miles)
Fuel Filter
Spark Plugs
Distributor
Spark Plug cables
Throttle Postion Sensor
Air Charge Temp Sensor
Coolant Temp Sensor
Map Sensor
O2 Sensor
Idle Air Control Sensor
EGR Sensor
Computer
New Engine and Transmission
We think it might be the fuel pressure regulator but we are not sure. When we tested fuel pressure it showed it was normal. Also it likes to do it when the A/C is turned on. The car is getting fuel, I don't know if it's getting the correct mixture or if it's cutting out.
2007-05-28 04:13:06 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Ford
When you say it sometimes happens, how often and what type of conditions? For an intermittant concern, try to identify parameters of when it happens. For example, restarts after sitting a few hours, only on cold starts.
You state your concern wont accellerate, a lack of power. First you did right by testing fuel presure. It must be: key on engine off 35 to 45 psi. Key on engine running, 27 to 37psi. with regulator disconnected, 40 to 45psi.
With fuel presure correct, your concern is related to what the computer(PCM) is doing during concern. If your concern occurs only during wide open throttle, the PCM is in open loop then during hard accelleration. You concern would be a base engine concern. If you concern is at other time, your concern is replaced to PCM, inputs or outputs. At this point you need to have a certified technician to look at it. He will need to install a break out box to test voltages as a computer would be seeing it.
2007-05-28 07:24:01 · answer #1 · answered by sr_master_tech 2 · 0⤊ 0⤋
I had a 1984 Ford Ranger that lost power after it started to warm up, after selling it I later found a $250 fix. The computer has gone out in your truck, which I believe should still be located behind a panel on the passenger side by the door under the dash. The computer controls the timing, fuel delivery, carburetor, and if its fuel injected it will control the fuel injection system also.
2007-05-28 07:36:34 · answer #2 · answered by Bill S 6 · 0⤊ 0⤋
When you walk around the truck can you smell gas? Can you see gas dripping from the truck? It sounds to me like you may have a gas leak somewhere. Try taking it to a Ford dealership. They have the most up-to-date technology and tools to determine what the problem is. Hope this helps!
2016-05-19 22:26:00 · answer #3 · answered by ? 3 · 0⤊ 0⤋
the mixture is probably the probably the problem.just check and replace the air cleaner.and see if there is an obstructiion for air to the engine...or a clamp on the intake,causing bad intake pressure... the intake is so critical too...
2007-05-28 04:27:00 · answer #4 · answered by jcr 3 · 0⤊ 0⤋
not to be rude but the amout of money you have tossed at guessing could have been used at the dealership to have the car fixed right with a warrenty on the work that was done
2007-05-28 13:12:28 · answer #5 · answered by moe 4 · 0⤊ 0⤋
i have a 89 ranger 200000 miles orignal cluch we run 93 octane in that helps alot we get 20 mpg
2007-05-30 12:43:22 · answer #6 · answered by Anonymous · 0⤊ 0⤋