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Author | Topic: Question about hot starting problem |
401KAT![]() ![]() ![]() POA Site Supporter Prowler Junkie From:dequincy, Louisiana, United States |
![]() ![]() ![]() ![]() ![]() ![]() Got a 2000 model rarely driven last 2 yrs...Started driving couple months ago....Car had a stutter when throttling ...not all the time ..Also when car sat 15 min or so it would crank but run rough for 15-20 secs and then straighten out and idle fine..Went threw the threads on here...checked fuel pressure and didnt like readings so installed new tom mills unit...same problem...changed crank sensor...no change...changed cam sensor...stuttering went totally away...BUT still have hot start issue...did leakdown on new pump..dropped 20 lbs in 14 hrs which is within spec...frustrated cause car runs like my others now except hot start....ONLY thing I noticed is temp gauge jumps to 3/4 when having hot start problems and then returns to normal as car clears out and idles again...ANYONE?? |
401KAT![]() ![]() ![]() POA Site Supporter Prowler Junkie From:dequincy, Louisiana, United States |
![]() ![]() ![]() ![]() ![]() ![]() Just got back from 40 mile "running hard" drive...ran flawless...10 min stopped in my shop...cranked ...coughed and ran rough for 15 secs..at same time temp went from 3/4 back to 1/2 in same 15 secs...weird....noticed cruise light flashed back on when running rough..then went out...also 1st time check engine lite on and flashing...would not go out till i stopped and recranked...weird again...sounds "fuelish" but now I'm not sure either temp related or grounds....temp during driving is normal....jim |
robin![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada |
![]() ![]() ![]() ![]() ![]() ![]() Still researching. Hot starting problems have |
robin![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada |
![]() ![]() ![]() ![]() ![]() ![]() Found this Jim. Hot start... The first thing that comes to mind is an ignition problem. As in, either your coilpack, HT leads (the cable running from the coilpack to the spark plug) or a spark plug is faulty. THe symptoms are consistent with what you describe. Would bad ignition go away after initial startup like what the OP described. |
dru![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:Texas |
![]() ![]() ![]() ![]() ![]() ![]() You've probably already done this, but if the check engine light was on and flashing, should have set a code(s). Pull those first and see what they say. May help point you in the right direction. |
401KAT![]() ![]() ![]() POA Site Supporter Prowler Junkie From:dequincy, Louisiana, United States |
![]() ![]() ![]() ![]() ![]() ![]() quote: Yeah my obd II is out on loan....going to check for those...Robin changed all plugs ...before the cam sensor made the stuttering disappear...Has to have something to do with heat...Have fun tomorrow joe and others on the church run...got to much going on to get over that far...jim |
Tony Goertz![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Administrating Kat Personal ScrapBook From:Lucan1, Ontario, Canada |
![]() ![]() ![]() ![]() ![]() ![]() Also check Fuel pressure after the car has sat for a day or so. Without turning key on. If an injector leaks down or O-rings leaks one or more cylinders could be flooded and make for a very hard start. |
padroo![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:Chesterton, IN, USA |
![]() ![]() ![]() ![]() ![]() ![]() Codes and freeze frame data would help a lot. |
401KAT![]() ![]() ![]() POA Site Supporter Prowler Junkie From:dequincy, Louisiana, United States |
![]() ![]() ![]() ![]() ![]() ![]() quote: Checked codes and it was 302,304, and 300...all misfires...cleared and drove again..stopped 10 min ...3 times to start...stumbling...then cleared up...no CEL...NO CODES |
padroo![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:Chesterton, IN, USA |
![]() ![]() ![]() ![]() ![]() ![]() quote: Check your intake manifold hold down bolts. Sometimes intakes leak when cold and seal back up after some thermal expansion. A leaking intake is a major vacuum leak and can cause misfires. |
401KAT![]() ![]() ![]() POA Site Supporter Prowler Junkie From:dequincy, Louisiana, United States |
![]() ![]() ![]() ![]() ![]() ![]() quote: Agreed but car idles perfect hot or cold UNTIL it sits 10-15 mins after driving...Would think vacuum leak would show at idle other times....But I will check...thanx |
mine2 Prowler Enthusiast From:Portage, MI |
![]() ![]() ![]() ![]() ![]() ![]() When you replace the Cam or Crank Sensors, make sure they are OEM only. I had this problem and talked with a Chrysler Mechanic in California and was told to USE ONLY OEM ELECTRONIC PARTS ONLY. I changed out the crank and cam sensors with OEM and it solved my issues... Hope you find your issue... |
401KAT![]() ![]() ![]() POA Site Supporter Prowler Junkie From:dequincy, Louisiana, United States |
![]() ![]() ![]() ![]() ![]() ![]() quote: The cam sensor change did fix the surging under throttle. Still working on hot start.... |
mslc10![]() ![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:Bulverde, Texas, United States |
![]() ![]() ![]() ![]() ![]() ![]() Any black smoke at rough idle? I’m thinking leaking fuel injector also. I’d kill engine while rough idle , pull and check plugs to see if wet or black . |
Marty Usher![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:San Antonio, Texas, United States |
![]() ![]() ![]() ![]() ![]() ![]() At least you solved your stuttering problem. My current Prowler stuttered and had hot restart problems that were caused by a bad TCM computer. It was damaged from a wire in the wiring harness not being grounded properly. On my first Prowler the hot start trouble was caused by an issue with one of the coil packs. |
401KAT![]() ![]() ![]() POA Site Supporter Prowler Junkie From:dequincy, Louisiana, United States |
![]() ![]() ![]() ![]() ![]() ![]() quote: Thats were i'm looking now Marty....and no smoke on hot start...I have a mechanic friend who swears by 44k injector cleaner...running it thru now to see if it is injector....It is less frequent right now...I bought this car to eventually resale but I'm anal about my cars so I wont sell until I've got it fixed...Never leaves U...just annoying....This car will make someone a nice daily...paint not perfect...but drives out nice....jim |
padroo![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() POA Site Supporter Prowler Junkie From:Chesterton, IN, USA |
![]() ![]() ![]() ![]() ![]() ![]() quote: If you suspect fuel injectors I would recommend a fuel injector leak down test. |
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