My 1990 electra used to run great until the magnet inside timing chain cover broke ave i had to replace it. After i did this it now has a hard time starting. I looked over everything i replaced crankshaft ave camshaft sensors. What else could be the reason. I hear the fuel pump turn on and the pressure is fine. I did change the fuel filter and it's on correctly. Any answers i looked over everything i need HELP
You should disconnect your battery and clear the module by taking the positive battery cable and touching it to the negative post or ground. Now make sure that everything is off and try to reconnect the battery cable without making the connection spark. If this does not work you may have to take it to a mechanic and have the timing, fuel etc set up on your module. Some modules are self learning and adapt to the person's style of driving.
SOURCE: 1992 Buick Park Avenue - car runs great..when it runs.
The crank sensor is located on the side of crankshaft damper/pulley it mounted on a bracket. However it think that you may have a map-sensor problem that's very common with this vehicle. The crank sensor is not hard to change at all. Good Luck get back in contact if you need more help
SOURCE: have a 1991 buick lesabre 3800 v6, cant get to
Check the ECM if it has the number 1228253 on it, this is what is wrong with it. Gm trashed all of these bad ecms. Get a 16198264 as they do not cause a cutting off problem . Get a delco ecm , aftermarket units will give trouble and may be a rebuilt 1228253 which is junk.
SOURCE: Buick Regal dying
You have a problem in the fuel pump relay circuit for sure then. I'm betting the relay, but it could be that dropping resistor.
SOURCE: Fuel relay placement 1991 Buick LeSabre. Replaced pump & filter still won't start
Your vehicle's fuel pump relay is located on the relay center, behind the glove box, 2nd column of relays, 2nd one from the top.
SOURCE: 1993 buick laSabre running fine then allof sudden will not start
I realize you may have already solved this but, this happened to me also in July...
I had to have it towed... a jump wouldn't work (battery was fine).
It was the...
ECM: Electronic Control Module
or
ECU: Electronic Control Unit
From repairpal.com: The vehicle's engine control unit (ECU) is a computer that receives information from sensors in the engine.
The computer processes this information and makes calculations to
control ignition timing, fuel-delivery parameters, engine idle speed,
and pollution emitted from the vehicle. The control unit interacts and
makes mutual decisions with systems throughout the vehicle. On newer
vehicles, the ECU may also control the engine cooling fans, cruise control, and AC Compressor.
They told me they hooked it up to another one to confirm that's what it
was. I think they said the fuel pump was working, but the signals
weren't getting through (?). I'm guessing they only had to
connect one of those diagnostic OBD things to it.
Anyway, they showed it to me, it was a small motherboard about 4x6
inches in a small black holder. He said the part alone cost about
$400, but I've not been able to confirm this on the web to see how
badly I got ripped off. When your car is sitting dead as a bug in
someone's repair shop, and you are helpless as to how to fix it, unless
you can afford to have it towed to multiple places, well, you gotta go
with what they tell ya. Every place I check on the web for this
make/model of ECM says "call for price".
Perhaps I got ripped off for $400 for the part, but I wouldn't know how to put it in regardless.
Anyway, that's why the car was dead as a doornail despite the battery
and other things being fine. No information was getting through
because the control module was dead.
I'm not saying this is/was your problem, but it may have been.
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It also idles high then to low like almost stumbles it so low. I need to fix my car help me
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