| Author | Message | ||
     robbyn freeman (Robbyn) New Member Username: Robbyn Post Number: 16 Registered: 10-2003 |
Need help please - I need help Truck would not run - friends came over and trued to do a tune up - a couple lose spark plugs - rotor and cap looked alright! Wires so/ so..... Disco would not start without starting fluid... Next morning truck started right up - ???? drove it up the hill no power - the exhust was red hot -and smoking thought the truck might blow up! Any ideas???? Cats blocked? , O2 Sensors?, Mufflers ???blockage????, ?????? What to do????? I might add - I am not a mechanic - I am a single mom of five little girls who is really down on her luck!!! I really need this truck - she is all I have.••••••• suggestions would really help!!!! ALSO I NEED THE FIRING ORDER - I DON'T KNOW IF WE HAVE IT RIGHT!!!!!! PLEASE ANYONE WITH ANY INFORMATION..... Thank you Robbyn 716-537-9055 | ||
| Dean Chrismon (Chrismonda) Member Username: Chrismonda Post Number: 159 Registered: 12-2002 |
I would say the cats or something in the exhaust system has shut down the exhaust flow. | ||
| Axel Haakonsen (Axel) Moderator Username: Axel Post Number: 878 Registered: 02-2003 |
Are the two Range Rovers listed in your profile dead, too? - Axel | ||
| robbyn freeman (Robbyn) New Member Username: Robbyn Post Number: 17 Registered: 10-2003 |
The range rovers are running but not currently on road - they are in my husbands hands - he filed against me four days after I got them for him! All the luck. Our the parts on the Ranger Rovers 90 -91 interchangerable with the 95 disco?? ie o2 sensors etc???? | ||
| Joey (Joey4420) Senior Member Username: Joey4420 Post Number: 538 Registered: 04-2003 |
Robbyn, what you have described with the no power and glowing exhaust sounds like bad Cats to me. I have seen this many times in other vehicles. As far as the RR 90-91 parts interchangable with a 95 disco, it depends on the part. O2 sensors probably, Cats (never use a used cat) I would call someone like DAP and ask about specific parts 802-885-6660. Of course I could be way off base to, and I am sure someone on here will let us both know. | ||
| Phil (Discoanywhere) Member Username: Discoanywhere Post Number: 114 Registered: 06-2003 |
I think Joeys right ... sounds like a blocked cat to me? ... My buddy will know more and I'll see him tonight if he has anything to add I'll come back.. I got a couple questions and added some info you might find helpfull below... 1) Does your truck idle smooth? 2) Does the water temp rise? 3) Does the exhaust coming out the tail pipe look normal? 4) When your in Park and rev the motor does its sound and feel normal? and one more thing IMO don't drive your truck until you know whats up? DIAGNOSIS How do you know if a converter needs to be replaced? In many instances, the only clue that the converter may need to be replaced is an emissions failure or a performance complaint (lack of power, poor fuel economy, stalling after starting). In any event, the first thing you should do is visually inspect the converter and air pump plumbing for obvious problems such as rust, physical damage or leaky connections. Loose heat shields can create annoying rattles and vibrations. Severe discoloration on the converter shell may be an indication of overheating and possible internal damage, but you can’t always count on it. In the case of a failed emissions test, higher than normal HC and CO tailpipe readings from a properly tuned engine, combined with higher than normal O2 readings and lower than normal CO2 readings, would tell you the converter isn’t doing much and probably needs to be replaced. On 1996 and newer vehicles with OBDII, the on-board diagnostics will usually catch a bad converter. The OBDII system monitors converter efficiency with a second oxygen sensor mounted behind the converter. The system compares oxygen levels ahead of and behind the converter to see if there’s a difference. Downstream oxygen levels should be lower if the converter is working properly. Little or no change in the downstream O2 readings means nothing is happening inside the converter. This will usually cause the OBDII system to illuminate the malfunction indicator lamp (MIL) or the Check-Engine light and set a fault code. The generic OBDII code for low converter efficiency is P0420. On pre-OBDII vehicles, converter efficiency can be checked with a four-gas exhaust analyzer – which is fine if you have one, but rules out this method if you don’t. One way to check converter performance is to read the tailpipe emission levels, then disable the air pump or aspirator and read the emission levels again. If the converter is working, HC and CO should both be lower, and CO2 should be higher. O2 should also be higher when the air pump is working. No change in HC, CO and CO2 readings would tell you the converter has reached the end of the road. | ||
| Norm Orschnorschki (Norm) Member Username: Norm Post Number: 111 Registered: 02-2003 |
Did the truck run worse after the tune up? Sounds like you might have gotten the spark plug leads out of order, which I would check before tearing into the exhaust. You don't want to run it in this condition -- might cause engine damage. Firing Order for a '95 3.9L V8 is 1-8-4-3-6-5-7-2 As you're looking at the distributor from the front, the No. 1 plug wire goes in front, nearest to the upper serpentine belt pulley (approx. the 5 o'clock position) and the rest of the plug wires are arranged clockwise from there in the firing order. As you're looking at the motor from the front, the left bank of cylinders (from front to back) is 2-4-6-8 and right bank is 1-3-5-7 -- this is as you're looking at the truck from the front. If you look at the spec sheet they're listed the reverse, right bank even, left bank odd. I have the diagram for this arrangement from the factory service manual -- I'd be happy to fax it to you, if you like. Good luck!!! ---Norm |
