Re: 86 Cherokee overheating problem
I think I have repaired the overheating problem at last. I removed the
radiator to change it over to a two row unit and found that the area between the A/C radiator and engine radiator was almost completely clogged up with dirt and leaves. I went ahead and changed the radiator but the old one looks good now that it can breathe. Ran the vehicle up a couple of hills and the temperature stayed down where it should. Thank you everybody for your help. Don Smith "Don Smith" <desmith@innercite.com> wrote in message news:10hs8sgt6ct7s01@corp.supernews.com... > Good evening, > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an > overheating problem. I just purchased it as a basket case and am trying to > get it back on the road again. I found that there were two bad valves in > the number two cylinder. The intake valve was burned through with a large > grove across the face. The exhaust valve had gotten so hot that it had > Cupped and sat too low in the seat. The head had a complete professional > valve job and was shaved slightly to ensure it was not warped. After it was > installed the engine ran rich and I found a hose was disconnected from the > Mapp sensor. I also found that someone had installed the wrong O2 sensor > and it was replaced with the correct one. The radiator has been flushed a > couple of times and now seems clean. There is a slight leak in the radiator > between the converter and muffler. It seems to idle fine but has a > sluggish pickup in engine RPM. Also backfires once in a while and wants to > get hot climbing even a small hill. Timing seems to be slightly higher than > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to find > any information as to the correct hose connections that had to be removed > when doing the valve job. All seem to be correct but cannot tell for sure. > Can you advise any other areas to check and perhaps point me to a site where > the hose diagram might be found? Thanks Don Smith > > > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04 > > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.737 / Virus Database: 491 - Release Date: 8/11/04 |
Re: 86 Cherokee overheating problem
I think I have repaired the overheating problem at last. I removed the
radiator to change it over to a two row unit and found that the area between the A/C radiator and engine radiator was almost completely clogged up with dirt and leaves. I went ahead and changed the radiator but the old one looks good now that it can breathe. Ran the vehicle up a couple of hills and the temperature stayed down where it should. Thank you everybody for your help. Don Smith "Don Smith" <desmith@innercite.com> wrote in message news:10hs8sgt6ct7s01@corp.supernews.com... > Good evening, > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an > overheating problem. I just purchased it as a basket case and am trying to > get it back on the road again. I found that there were two bad valves in > the number two cylinder. The intake valve was burned through with a large > grove across the face. The exhaust valve had gotten so hot that it had > Cupped and sat too low in the seat. The head had a complete professional > valve job and was shaved slightly to ensure it was not warped. After it was > installed the engine ran rich and I found a hose was disconnected from the > Mapp sensor. I also found that someone had installed the wrong O2 sensor > and it was replaced with the correct one. The radiator has been flushed a > couple of times and now seems clean. There is a slight leak in the radiator > between the converter and muffler. It seems to idle fine but has a > sluggish pickup in engine RPM. Also backfires once in a while and wants to > get hot climbing even a small hill. Timing seems to be slightly higher than > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to find > any information as to the correct hose connections that had to be removed > when doing the valve job. All seem to be correct but cannot tell for sure. > Can you advise any other areas to check and perhaps point me to a site where > the hose diagram might be found? Thanks Don Smith > > > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04 > > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.737 / Virus Database: 491 - Release Date: 8/11/04 |
Re: 86 Cherokee overheating problem
I think I have repaired the overheating problem at last. I removed the
radiator to change it over to a two row unit and found that the area between the A/C radiator and engine radiator was almost completely clogged up with dirt and leaves. I went ahead and changed the radiator but the old one looks good now that it can breathe. Ran the vehicle up a couple of hills and the temperature stayed down where it should. Thank you everybody for your help. Don Smith "Don Smith" <desmith@innercite.com> wrote in message news:10hs8sgt6ct7s01@corp.supernews.com... > Good evening, > I have a 1986 Jeep Cherokee Pioneer with a 2.46L 4-150 engine with an > overheating problem. I just purchased it as a basket case and am trying to > get it back on the road again. I found that there were two bad valves in > the number two cylinder. The intake valve was burned through with a large > grove across the face. The exhaust valve had gotten so hot that it had > Cupped and sat too low in the seat. The head had a complete professional > valve job and was shaved slightly to ensure it was not warped. After it was > installed the engine ran rich and I found a hose was disconnected from the > Mapp sensor. I also found that someone had installed the wrong O2 sensor > and it was replaced with the correct one. The radiator has been flushed a > couple of times and now seems clean. There is a slight leak in the radiator > between the converter and muffler. It seems to idle fine but has a > sluggish pickup in engine RPM. Also backfires once in a while and wants to > get hot climbing even a small hill. Timing seems to be slightly higher than > 12 BTDC. Have not checked the fuel filter as of yet. I cannot seem to find > any information as to the correct hose connections that had to be removed > when doing the valve job. All seem to be correct but cannot tell for sure. > Can you advise any other areas to check and perhaps point me to a site where > the hose diagram might be found? Thanks Don Smith > > > > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.735 / Virus Database: 489 - Release Date: 8/11/04 > > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.737 / Virus Database: 491 - Release Date: 8/11/04 |
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