Question about 1987 Ford Ranger
Trucks runs fine when first started, after driving a short distance the choking and sputtering starts. Needs to be turned off and allowed to cool to be able to drive without choking.
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Posted on Jan 02, 2017
SOURCE: 99 F250 V10 Sputtering
It takes just one of the coil on Plug units to cause sputtering and severe shaking. Fortunately the prices have dropped slightly for the coil units. The bad news is it is still close to 100 bucks from the Ford dealers. I have had to replace 3 of these on my 1999 F250 superduty V-10 since I bought it new. I believe there may be some compatible aftermarket units out there for high performance V-8 engines, but can not confirm compatibility.
Posted on Jan 11, 2009
SOURCE: Vehicle "Choking" While Driving
On my 2002 windstar, I had intermittent problems with the engine light flashing while the motor was accelerating or going up a hill, about 3 minutes into a drive following being left alone all night. During this time, the car engine shook and acceleration was poor. Later, the problem was minimal.
The coil block has one coil for two cylinders. In my case, the middle coil fires cylinders 2 & 6. When I cleared the codes and got the problem to occur again, the codes came back at the same time. I removed the cowling to access the col block. When I examined the bottom of the coil, I discovered that a crack had occurred across the resin just under the location of the middle coil.
Autozone has a diagram of the pinouts of this coil block you can download to see if your dual-intermittent cylinder misfire problem corresponds to another coil in the block.
When moisture gets into the coil, it causes the problem. When moisture is driven out of the crack by engine heat, the problem subsides.
Procedure I used for repair:
Access: Remove Cowling:
1. Remove Wipers
2. Loosen Plastic Cowling cover
3. Remove washer fluid hoses from nozzel
4. Remove plastic cowling
5. Disconnect wiper power from connection on drivers side wiper motor.
6. Disconnect wiper fluid hose from connection above passenger front wheel.
7. Remove metal cowling.
8. Change out the coil with three screws - very easy to do.
9. Replace components in reverse order.
Note: While I was at it, I changed the wires and the spark plugs. The spark plubs in the back were accessable but hard to get to without a swivel head socket wrench.
Posted on May 03, 2009
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