QuestionQUESTION: I am not sure if this is the same person whom I was speaking with before so I will start over..I am working on a 1987 Caddy fleetwood d elegance 4.1 engine. The following repairs have been made: dist control module, dist. pickup coil, coil, Tps, throttle body, plugs and wires, timing chain, Fuel filter, fuel pump, compression check 150 all cylinders, set timing, dropped exhaust to check cat. I think that was everything,, Heres the problem. When you crank the car to try and start it it fires up for half a second then dies over and over. It appears to me that it is dumping way to much fuel in the throttle body and flooding. When we pull the plugs they wet with fuel. This is why we changed the throttle body and fuel regulator.. The problem still continues... I am starting to lean toward a computer problem... any more ideas or suggestions would be appreciated.. Thanks Steve
ANSWER: Check the MAP sensor to be sure that there is no liquid gas in the rubber vacuum hose that is attached to it and make sure that the hose is good. If the MAP sensor checks out OK, Replace the ECM computer.
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QUESTION: Another one I forgot... Ya we did replace the MAP sensor as well. No fuel in hose....
ANSWER: Replace the ECM computer. If you need picture directives, E-mail: onlineautohelp@msn.com
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QUESTION: Thanks for all the help.. We did replace the ecm today with the same results however, for some strange reason the car started later in the day with the original ecm but ran like crap. Still would not idle right and popped from throttle body. As it was running for that few seconds I seen no engine lits however, the oil light was on. So I pulled the sensor and put on a manual oil gage. The caddy has no oil pressure so the pump is out. We are assuming that the lifters are collapsed with no pressure and this was giving us the impression of a timing problem.. What do you think? Of course now we have to replace the oil pump before going any further. Boy we have replaced everything a mechanic can think of for a vehicle with the problems this thing has.. I will be kind of funny if it were lifters the whole time...
AnswerJust by the sound of the engine turning over would have told you that you had low or no oil pressure. Does the distributor rotor spin when you try and crank the engine ?. If NOT could be broken chain or camshaft or faulty oil pump.
Wish I could have HEARD the engine while you were cranking it, As it makes a distinctive sound when there is no oil pressure..
