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1989 dodge colt Gt random hesitation problems http://4g61t.org/forum/viewtopic.php?f=17&t=41312 |
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Author: | cheese [ Mon May 13, 2019 11:32 pm ] |
Post subject: | 1989 dodge colt Gt random hesitation problems |
My colt randomly has hesitation problems when accelerating, has no balls going up hills and this is causing bad gas mileage. Weird thing is its completely random. So days it will drive fine, other days it drives awful, some days in drives ok. I replaced the fuel pump, tried a different ecu, tried a different MAS, installed a new throttle position sensor, new fuel filter, checked the timing, all this and still runs the same. Also there is no check engine light. I'm thinking maybe a Knock sensor but I don't even think the engine has one. Any help would be nice, thank you. |
Author: | slowdsm [ Tue May 14, 2019 2:17 am ] |
Post subject: | Re: 1989 dodge colt Gt random hesitation problems |
did u check the timing belt.. 1 tooth off will cause intermittent issues.. Steve |
Author: | cheese [ Wed May 15, 2019 1:08 am ] |
Post subject: | Re: 1989 dodge colt Gt random hesitation problems |
Yep, checked the timing. Also probably unrelated, but shes leaking a good amount of oil. |
Author: | UnderPSI [ Sat May 18, 2019 3:24 pm ] |
Post subject: | Re: 1989 dodge colt Gt random hesitation problems |
Quote:
Yep, checked the timing. Also probably unrelated, but shes leaking a good amount of oil.
It's a Mitsubishi so get used to that. Have you done the basics like plugs, wires, distributor cap, rotor button? I am assuming this is a 1.5 sohc GT car correct, if so no knock sensor. |
Author: | cheese [ Sat May 18, 2019 11:14 pm ] |
Post subject: | Re: 1989 dodge colt Gt random hesitation problems |
Quote: Quote:
Yep, checked the timing. Also probably unrelated, but shes leaking a good amount of oil.
It's a Mitsubishi so get used to that. Have you done the basics like plugs, wires, distributor cap, rotor button? I am assuming this is a 1.5 sohc GT car correct, if so no knock sensor. |
Author: | UnderPSI [ Sun May 19, 2019 2:37 pm ] |
Post subject: | Re: 1989 dodge colt Gt random hesitation problems |
OBD1 especially in Mitsubishi's will run just awful without a CEL. Next area's I would address would be the O2 sensor and the coolant temp sensor. For sanities sake I would also do a health check on the engine and do a compression check and a leak down test. |
Author: | cheese [ Tue Sep 17, 2019 6:42 pm ] |
Post subject: | Re: 1989 dodge colt Gt random hesitation problems |
Turned out it was just the ECU. Hard to believe both ecus I used before had the exact same problem. I bought a refurbished 1.8l ECU, paired it with bigger injectors, and maf sensor and it's running well now |
Author: | Flying Eagle [ Mon Sep 23, 2019 9:11 am ] |
Post subject: | Re: 1989 dodge colt Gt random hesitation problems |
ECU's of this era are all due for rebuild if the capacitors are original or weren't caught in time to prevent other damages to the board that creep in after the fact - ie acid on traces/components. Glad to hear you caught it! |
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