20 Most Recent 1991 Chevrolet S-10 - Page 7 Questions & Answers

There is a vacuume switch with 3 vacuume lines running to it on the top side of the transfer case that is a known problem on push button 4wd. If i remember right the 91 has this and it should take care of your problem. It's called the transfer case switch and it's about $15.

Could be the coil, ignition module in the distributor, or various other things.I would check the coil for battery voltage and resistance first.

the problem if from the map sensor.. when you change it it will run rough and keep cutting off,, keep stating it back and reeving over and over as soon as it cuts off again keep repeating until the CPU gets calibrated with the new sensor and it starts idling smoothly..

i think you should make a diagnostic and the tool Digiprog3 can help you

it has one fuel filter,but problem is low fuel pressure.The fuel pressure is worn out and needs replacing.

Car not starting or turning over indicates towards multiple possibilities. It can be issue with battery or weak battery. But if battery checks out ok, then it can be starter issue or faulty alternator or problem with low fuel pressure or no spark at spark plugs due to dirty spark plugs or faulty ignition coil or injectors getting cracked or dirty and needs to be cleaned.

To confirm the problem, the basic troubleshooting is required.

From start to end troubleshooting these problems I suggest you to check the help link below and follow its procedure: -----

CAR NO START:ENGINE NOT TURNING OVER: http://alltypesofpartsreplacing.blogspot.com/2012/11/car-no-start-engine-not-turning-over.html----------------

very carefully, but on a serious note if you have the large body starter the one where the main body steps to a larger diameter you will likely have to use an engine hoist pull the engine mount bolts (just the horizontal ones one on each side) and remove the distributor cap to avoid breaking it then lift the engine about 6 inches til the starter falls out believe me i just did it tonight on mine it sucks but thats likely your only option the small body starter will pull right down assuming you have an automatic trans you may have to move the trans cooler lines a bit but if it doesnt pull right out you will have to lift the engine

Hi Tommy, Your code is low coolant temperature warning, or wiring problem to the same sensor. Regards John

take bad fuel--drain-------chec distributer for corrosion-inside--also ignition module cud be failin----get car scanned for codes by a pro

I had the same problem. I purchased a TPS on ebay for $14.00 installed it myself, then I adjusted and carb. Then my A/C started working and the truck runs great.

if nothing else works check the relay located on firewall passengers side

There is no drain plug on an automatic, you have to take off your transmissions oil pan and have a new gasket in hand or it will leak when you put it back on.

This problem can be due to a few things, first if it is cable operated then the cable may be sticking and need replacing or lube. if hydarulic you may have pressure plate problem. it is hard to say which one is your problem with out looking at it so try to find out what type it is. good day

You have to remove the oil pan, you will see it there. Doesn't require a lot of tools