Temperature light comes on but car is not overheating. Vehicle hesitates when light comes on during acceleration. Vehicle cut off once but restarted.
SOURCE: 1996 Mercury Tracer with sudden loud engine knock
Was the engine overheated when it shut down on the highway? If so, it probably seized due to a stuck bearing, when you restarted the engine, the bearing spun and now you likely hear a connecting rod knocking around in the engine without bearings. This will mean you need a new engine.
If the engine didn't overheat, then it's possible that a valve seat in the cylinder head fell out of place and is now banging around inside a combustion chamber destroying the engine and you will likely need a new one. This was a very common problem on one of the Ford based 4 cylinder engines, it depends which one you have. The major offender was a 2.0 litre.
Another possibility, the timing belt has jumped and the pistons are now hitting the valves, causing the engine to run rough. This will either require a major repair or a new engine.
SOURCE: Hesitation and Rough Idle
Hi, you stated that the original fuel pump is still installed. I would replace this pump as soon as possible. this may be the key issue. You can check the voltage on this part by using a voltage meter. you should get 14 volts here. if its less than 14, it will run weak , in return, preventing proper fuel flow. I would also check the injection system to see if its running properly as well.
please rate and god bless.
SOURCE: 99 Sable - hesitation or flutter at 35-42mph - service light on
I had the same EXACT problem on my 2002 Sable. Freaked out thinking I needed a transmission.
All I needed was a tune-up. When not firing properly, sensors "take over" to compensate.
Check plugs/wires...you'll be surprised...I sure was!!
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